diff --git a/README.md b/README.md
index c641563..24efb57 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 <div align="center">
   <h1>flecks</h1>
   <p>
-    Flecks is a dynamic, configuration-driven, fullstack application production system. Its purpose
+    Flecks is an exceptionally extensible fullstack application production system. Its true purpose
     is to make application development a more joyful endeavor. Intelligent defaults combined with
     a highly dynamic structure encourage consistency while allowing you to easily express your own
     opinions.
diff --git a/TODO.md b/TODO.md
index 491effd..3f87ef8 100644
--- a/TODO.md
+++ b/TODO.md
@@ -22,7 +22,7 @@
 - [x] remove `invokeParallel()`
 - [x] Specialize `invokeReduce()` with `invokeMerge()`.
 - [x] Rename all hooks to dot-first notation; rewrite `lookupFlecks()`.
-- [ ] ensureUniqueReduction moved into invokeMerge
+- [x] ensureUniqueReduction moved into invokeMerge
 - [x] `bootstrap({without: ['badplatform']})` should be handled by passing `{platforms: ['!badplatform']}`
 - [ ] user redux server hydrate fails if no user in req
 - [ ] governor fails if not in server up
@@ -31,3 +31,4 @@
 - [ ] rename `@flecks/web` to `@flecks/web`
 - [ ] simultaneous babel compilation across all compiled flecks
 - [ ] add building to publish process ...
+- [ ] @babel/register@7.18.x has a bug
diff --git a/packages/core/QUIRKS.md b/packages/core/QUIRKS.md
new file mode 100644
index 0000000..12a2a8f
--- /dev/null
+++ b/packages/core/QUIRKS.md
@@ -0,0 +1 @@
+- I use the variable `r` a lot when referencing a reducer's accumulator value
diff --git a/packages/core/build/.neutrinorc.js b/packages/core/build/.neutrinorc.js
index 40c4cbc..eb7167d 100644
--- a/packages/core/build/.neutrinorc.js
+++ b/packages/core/build/.neutrinorc.js
@@ -35,8 +35,10 @@ config.use.push(({config}) => {
   }
 });
 
+// Fleck build configuration.
 config.use.unshift(fleck());
 
+// AirBnb linting.
 config.use.unshift(
   airbnb({
     eslint: {
@@ -45,13 +47,13 @@ config.use.unshift(
   }),
 );
 
+// Include a shebang and set the executable bit..
 config.use.push(banner({
   banner: '#!/usr/bin/env node',
   include: /^cli\.js$/,
   pluginId: 'shebang',
   raw: true,
 }))
-
 config.use.push(({config}) => {
   config
     .plugin('executable')
diff --git a/packages/core/build/dox/concepts/hooks.md b/packages/core/build/dox/concepts/hooks.md
index 7042a98..4bbe26f 100755
--- a/packages/core/build/dox/concepts/hooks.md
+++ b/packages/core/build/dox/concepts/hooks.md
@@ -2,16 +2,12 @@
 
 Hooks are how everything happens in flecks. There are many hooks and the hooks provided by flecks are documented at the [hooks reference page](https://github.com/cha0s/flecks/blob/gh-pages/hooks.md).
 
-To define hooks (and turn your plain ol' boring JS modules into beautiful interesting flecks), you only have to import the `Hooks` symbol and key your default export:
+To define hooks (and turn your plain ol' boring JS modules into beautiful interesting flecks), you only have to export a `hooks` object:
 
 ```javascript
-import {Hooks} from '@flecks/core';
-
-export default {
-  [Hooks]: {
-    '@flecks/core.starting': () => {
-      console.log('hello, gorgeous');
-    },
+export const hooks = {
+  '@flecks/core.starting': () => {
+    console.log('hello, gorgeous');
   },
 };
 ```
@@ -133,15 +129,15 @@ assert(foo.type === 'Foo');
 ```javascript
 {
   // The property added when extending the class to return the numeric ID.
-  idAttribute = 'id',
+  idProperty = 'id',
   // The property added when extending the class to return the type.
-  typeAttribute = 'type',
+  typeProperty = 'type',
   // A function called with the `Gathered` object to allow checking validity.
   check = () => {},
 }
 ```
 
-As an example, when `@flecks/db/server` gathers models, `typeAttribute` is set to `name`, because Sequelize requires its model classes to have a unique `name` property.
+As an example, when `@flecks/db/server` gathers models, `typeProperty` is set to `name`, because Sequelize requires its model classes to have a unique `name` property.
 
 **Note:** the numeric IDs are useful for efficient serialization between the client and server, but **if you are using this property, ensure that `flecks.gather()` is called equivalently on both the client and the server**. As a rule of thumb, if you have serializable `Gathered`s, they should be invoked and defined in `your-fleck`, and not in `your-fleck/[platform]`, so that they are invoked for every platform.
 
@@ -152,19 +148,15 @@ Complementary to gather hooks above, `Flecks.provide()` allows you to ergonomica
 Here's an example of how you could manually provide `@flecks/db/server.models` in your own fleck:
 
 ```javascript
-import {Hooks} foom '@flecks/core';
-
 import SomeModel from './models/some-model';
 import AnotherModel from './models/another-model';
 
-export default {
-  [Hooks]: {
-    '@flecks/db/server.models': () => ({
-      SomeModel,
-      AnotherModel,
-    }),
-  },
-};
+export const hooks = {
+  '@flecks/db/server.models': () => ({
+    SomeModel,
+    AnotherModel,
+  }),
+}
 ```
 
 If you think about the example above, you might realize that it will become a lot of typing to keep adding new models over time. Provider hooks exist to reduce this maintenance burden for you.
@@ -183,12 +175,10 @@ models/
 then, this `index.js`:
 
 ```javascript
-import {Flecks, Hooks} from '@flecks/core';
+import {Flecks} from '@flecks/core';
 
-export default {
-  [Hooks]: {
-    '@flecks/db/server.models': Flecks.provide(require.context('./models', false, /\.js$/)),
-  },
+export const hooks = {
+  '@flecks/db/server.models': Flecks.provide(require.context('./models', false, /\.js$/)),
 };
 ```
 
@@ -212,31 +202,27 @@ is *exactly equivalent* to the gather example above. By default, `Flecks.provide
 When a Model (or any other) is gathered as above, an implicit hook is called: `${hook}.decorate`. This allows other flecks to decorate whatever has been gathered:
 
 ```javascript
-import {Hooks} from '@flecks/core';
-
-export default {
-  [Hooks]: {
-    '@flecks/db/server.models.decorate': (Models) => {
-      return {
-        ...Models,
-        User: class extends Models.User {
-          
-          // Let's mix in some logging...
-          constructor(...args) {
-            super(...args);
-            console.log ('Another user decorated!');
-          }
-          
-        },
-      };
-    },
+export const hooks = {
+  '@flecks/db/server.models.decorate': (Models) => {
+    return {
+      ...Models,
+      User: class extends Models.User {
+        
+        // Let's mix in some logging...
+        constructor(...args) {
+          super(...args);
+          console.log ('Another user decorated!');
+        }
+        
+      },
+    };
   },
 };
 ```
 
 #### `Flecks.decorate(context, options)`
 
-As with above, there exists an API for making the maintenance of decorators more ergonomic.
+As with above, there exists an API for making the maintenance of decorators even more ergonomic.
 
 Supposing our fleck is structured like so:
 
@@ -266,12 +252,12 @@ export default (User) => {
 then, this `index.js`:
 
 ```javascript
-import {Flecks, Hooks} from '@flecks/core';
+import {Flecks} from '@flecks/core';
 
-export default {
-  [Hooks]: {
-    '@flecks/db/server.models.decorate': Flecks.decorate(require.context('./models/decorators', false, /\.js$/)),
-  },
+export const hooks = {
+  '@flecks/db/server.models.decorate': (
+    Flecks.decorate(require.context('./models/decorators', false, /\.js$/))
+  ),
 };
 ```
 
@@ -307,7 +293,7 @@ Our `flecks.yml` could be configured like so:
 
 In this application, when `@flecks/http/server.request.route` is invoked, `@flecks/user/session`'s implementation is invoked (which reifies the user's session from cookies), followed by `my-cool-fleck`'s (which, we assume, does some kind of very cool dark mode check).
 
-### Ellipses
+### Ellipses/elision
 
 It may not always be ergonomic to configure the order of every single implementation, but enough to specify which implementations must run first (or last).
 
diff --git a/packages/core/build/dox/hooks.js b/packages/core/build/dox/hooks.js
index 3f34046..edd1ad6 100644
--- a/packages/core/build/dox/hooks.js
+++ b/packages/core/build/dox/hooks.js
@@ -1,122 +1,118 @@
-import {Hooks} from '@flecks/core';
+export const hooks = {
 
-export default {
-  [Hooks]: {
-    /**
-     * Hook into neutrino configuration.
-     * @param {string} target The build target; e.g. `server`.
-     * @param {Object} config The neutrino configuration.
-     */
+  /**
+   * Hook into neutrino configuration.
+   * @param {string} target The build target; e.g. `server`.
+   * @param {Object} config The neutrino configuration.
+   */
     '@flecks/core.build': (target, config) => {
-      if ('something' === target) {
-        config[target].use.push(someNeutrinoMiddleware);
-      }
-    },
+    if ('something' === target) {
+      config[target].use.push(someNeutrinoMiddleware);
+    }
+  },
 
-    /**
-      * Alter build configurations after they have been hooked.
-      * @param {Object} configs The neutrino configurations.
-      */
-    '@flecks/core.build.alter': (configs) => {
-      // Maybe we want to do something if a config exists..?
-      if (configs.something) {
-        // Do something...
-        // And then maybe we want to remove it from the build configuration..?
-        delete configs.something;
-      }
-    },
-
-    /**
-      * Register build configuration.
-      */
-    '@flecks/core.build.config': () => [
-      /**
-       * If you document your config files like this, documentation will be automatically
-       * generated.
-       */
-      '.myrc.js',
-      /**
-       * Make sure you return them as an array expression, like this.
-       */
-      ['mygeneralrc.js', {specifier: (specific) => `${specific}.mygeneralrc.js`}],
-    ],
-
-    /**
-      * Define CLI commands.
-      */
-    '@flecks/core.commands': (program) => ({
-      // So this could be invoked like:
-      // npx flecks something -t --blow-up blah
-      something: {
-        action: (...args) => {
-          // Run the command...
-        },
-        args: [
-          '<somearg>',
-        ],
-        description: 'This sure is some command',
-        options: [
-          '-t, --test', 'Do a test',
-          '-b, --blow-up', 'Blow up instead of running the command',
-        ],
-      },
-    }),
-
-    /**
-      * Define configuration.
-      */
-    '@flecks/core.config': () => ({
-      whatever: 'configuration',
-      your: 1337,
-      fleck: 'needs',
-      /**
-       * Also, comments like this will be used to automatically generate documentation.
-       */
-      though: 'you should keep the values serializable',
-    }),
-
-    /**
-    * Invoked when a fleck is HMR'd
-    * @param {string} path The path of the fleck
-    * @param {Module} updatedFleck The updated fleck module.
+  /**
+    * Alter build configurations after they have been hooked.
+    * @param {Object} configs The neutrino configurations.
     */
-      '@flecks/core.hmr': (path, updatedFleck) => {
-      if ('my-fleck' === path) {
-        updatedFleck.doSomething();
-      }
-    },
+  '@flecks/core.build.alter': (configs) => {
+    // Maybe we want to do something if a config exists..?
+    if (configs.something) {
+      // Do something...
+      // And then maybe we want to remove it from the build configuration..?
+      delete configs.something;
+    }
+  },
 
+  /**
+    * Register build configuration.
+    */
+  '@flecks/core.build.config': () => [
     /**
-      * Invoked when a gathered class is HMR'd.
-      * @param {constructor} Class The class.
-      * @param {string} hook The gather hook; e.g. `@flecks/db/server.models`.
-      */
-    '@flecks/core.hmr.gathered': (Class, hook) => {
-      // Do something with Class...
-    },
+     * If you document your config files like this, documentation will be automatically
+     * generated.
+     */
+    '.myrc.js',
+    /**
+     * Make sure you return them as an array expression, like this.
+     */
+    ['mygeneralrc.js', {specifier: (specific) => `${specific}.mygeneralrc.js`}],
+  ],
 
-    /**
-      * Invoked when the application is starting. Use for order-independent initialization tasks.
-      */
-    '@flecks/core.starting': (flecks) => {
-      flecks.set('$my-fleck/value', initializeMyValue());
+  /**
+    * Define CLI commands.
+    */
+  '@flecks/core.commands': (program) => ({
+    // So this could be invoked like:
+    // npx flecks something -t --blow-up blah
+    something: {
+      action: (...args) => {
+        // Run the command...
+      },
+      args: [
+        '<somearg>',
+      ],
+      description: 'This command does tests and also blows up',
+      options: [
+        '-t, --test', 'Do a test',
+        '-b, --blow-up', 'Blow up instead of running the command',
+      ],
     },
+  }),
 
+  /**
+    * Define configuration.
+    */
+  '@flecks/core.config': () => ({
+    whatever: 'configuration',
+    your: 1337,
+    fleck: 'needs',
     /**
-      * Define neutrino build targets.
-      */
-    '@flecks/core.targets': () => ['sometarget'],
+     * Also, comments like this will be used to automatically generate documentation.
+     */
+    though: 'you should keep the values serializable',
+  }),
 
-    /**
-      * Hook into webpack configuration.
-      * @param {string} target The build target; e.g. `server`.
-      * @param {Object} config The neutrino configuration.
-      */
-    '@flecks/core.webpack': (target, config) => {
-      if ('something' === target) {
-        config.stats = 'verbose';
-      }
-    },
+  /**
+  * Invoked when a fleck is HMR'd
+  * @param {string} path The path of the fleck
+  * @param {Module} updatedFleck The updated fleck module.
+  */
+    '@flecks/core.hmr': (path, updatedFleck) => {
+    if ('my-fleck' === path) {
+      updatedFleck.doSomething();
+    }
+  },
+
+  /**
+    * Invoked when a gathered class is HMR'd.
+    * @param {constructor} Class The class.
+    * @param {string} hook The gather hook; e.g. `@flecks/db/server.models`.
+    */
+  '@flecks/core.hmr.gathered': (Class, hook) => {
+    // Do something with Class...
+  },
+
+  /**
+    * Invoked when the application is starting. Use for order-independent initialization tasks.
+    */
+  '@flecks/core.starting': (flecks) => {
+    flecks.set('$my-fleck/value', initializeMyValue());
+  },
+
+  /**
+    * Define neutrino build targets.
+    */
+  '@flecks/core.targets': () => ['sometarget'],
+
+  /**
+    * Hook into webpack configuration.
+    * @param {string} target The build target; e.g. `server`.
+    * @param {Object} config The neutrino configuration.
+    */
+  '@flecks/core.webpack': (target, config) => {
+    if ('something' === target) {
+      config.stats = 'verbose';
+    }
   },
 };
-
diff --git a/packages/core/package.json b/packages/core/package.json
index 692b460..26aee49 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -59,6 +59,7 @@
     "babel-merge": "^3.0.0",
     "babel-plugin-prepend": "^1.0.2",
     "chai": "4.2.0",
+    "chai-as-promised": "7.1.1",
     "commander": "^8.3.0",
     "debug": "4.3.1",
     "enhanced-resolve": "^5.9.2",
diff --git a/packages/core/src/bootstrap/autoentry.js b/packages/core/src/bootstrap/autoentry.js
index c1609f9..8e6a533 100644
--- a/packages/core/src/bootstrap/autoentry.js
+++ b/packages/core/src/bootstrap/autoentry.js
@@ -11,7 +11,7 @@ const {
   FLECKS_CORE_ROOT = process.cwd(),
 } = process.env;
 
-const resolver = (source) => (path) => {
+const resolveValidModulePath = (source) => (path) => {
   // Does the file resolve as source?
   try {
     R.resolve(`${source}/${path}`);
@@ -39,7 +39,7 @@ module.exports = () => ({config, options}) => {
     .set(name, join(FLECKS_CORE_ROOT, 'src'));
   // Calculate entry points from `files`.
   files
-    .filter(resolver(source))
+    .filter(resolveValidModulePath(source))
     .forEach((file) => {
       const trimmed = join(dirname(file), basename(file, extname(file)));
       config
diff --git a/packages/core/src/bootstrap/require.js b/packages/core/src/bootstrap/require.js
index 168357d..76e08c0 100644
--- a/packages/core/src/bootstrap/require.js
+++ b/packages/core/src/bootstrap/require.js
@@ -1,2 +1,4 @@
+// Get a runtime require function by hook or by crook. :)
+
 // eslint-disable-next-line no-eval
 module.exports = eval('"undefined" !== typeof require ? require : undefined');
diff --git a/packages/core/src/ensure-unique-reduction.js b/packages/core/src/ensure-unique-reduction.js
deleted file mode 100644
index 32e5855..0000000
--- a/packages/core/src/ensure-unique-reduction.js
+++ /dev/null
@@ -1,16 +0,0 @@
-export default async (flecks, hook, ...args) => {
-  const track = {};
-  return Object.entries(flecks.invoke(hook, ...args))
-    .reduce(async (r, [pkg, impl]) => {
-      const aimpl = await impl;
-      Object.keys(aimpl).forEach((key) => {
-        if (track[key]) {
-          throw new ReferenceError(
-            `Conflict in ${hook}: '${track[key]}' implemented '${key}', followed by '${pkg}'`,
-          );
-        }
-        track[key] = pkg;
-      });
-      return {...(await r), ...aimpl};
-    }, {});
-};
diff --git a/packages/core/src/flecks.js b/packages/core/src/flecks.js
index 195625f..54f0c43 100644
--- a/packages/core/src/flecks.js
+++ b/packages/core/src/flecks.js
@@ -16,24 +16,38 @@ import Middleware from './middleware';
 const debug = D('@flecks/core/flecks');
 const debugSilly = debug.extend('silly');
 
+// Symbols for Gathered classes.
 export const ById = Symbol.for('@flecks/core.byId');
 export const ByType = Symbol.for('@flecks/core.byType');
-export const Hooks = Symbol.for('@flecks/core.hooks');
 
+/**
+ * Capitalize a string.
+ *
+ * @param {string} string
+ * @returns {string}
+ */
 const capitalize = (string) => string.substring(0, 1).toUpperCase() + string.substring(1);
 
+/**
+ * CamelCase a string.
+ *
+ * @param {string} string
+ * @returns {string}
+ */
 const camelCase = (string) => string.split(/[_-]/).map(capitalize).join('');
 
+// Track gathered for HMR.
 const hotGathered = new Map();
 
-const wrapperClass = (Class, id, idAttribute, type, typeAttribute) => {
+// Wrap classes to expose their flecks ID and type.
+const wrapGathered = (Class, id, idProperty, type, typeProperty) => {
   class Subclass extends Class {
 
-    static get [idAttribute]() {
+    static get [idProperty]() {
       return id;
     }
 
-    static get [typeAttribute]() {
+    static get [typeProperty]() {
       return type;
     }
 
@@ -43,72 +57,121 @@ const wrapperClass = (Class, id, idAttribute, type, typeAttribute) => {
 
 export default class Flecks {
 
+  config = {};
+
+  flecks = {};
+
+  hooks = {};
+
+  platforms = {};
+
+  /**
+   * @param {object} init
+   * @param {object} init.config The Flecks configuration (e.g. loaded from `flecks.yml`).
+   * @param {string[]} init.platforms Platforms this instance is running on.
+   */
   constructor({
     config = {},
     flecks = {},
     platforms = [],
   } = {}) {
-    this.config = {
-      ...Object.fromEntries(Object.keys(flecks).map((path) => [path, {}])),
-      ...config,
-    };
-    this.hooks = {};
-    this.flecks = {};
+    const emptyConfigForAllFlecks = Object.fromEntries(
+      Object.keys(flecks).map((path) => [path, {}]),
+    );
+    this.config = {...emptyConfigForAllFlecks, ...config};
     this.platforms = platforms;
     const entries = Object.entries(flecks);
     debugSilly('paths: %O', entries.map(([fleck]) => fleck));
     for (let i = 0; i < entries.length; i++) {
       const [fleck, M] = entries[i];
-      this.registerFleck(fleck, M);
+      this.registerFleckHooks(fleck, M);
+      this.invoke('@flecks/core.registered', fleck, M);
     }
-    this.configureFlecks();
+    this.configureFlecksDefaults();
     debugSilly('config: %O', this.config);
   }
 
-  configureFleck(fleck) {
+  /**
+   * Configure defaults for a fleck.
+   *
+   * @param {string} fleck
+   * @protected
+   */
+  configureFleckDefaults(fleck) {
     this.config[fleck] = {
       ...this.invokeFleck('@flecks/core.config', fleck),
       ...this.config[fleck],
     };
   }
 
-  configureFlecks() {
-    const defaultConfig = this.invoke('@flecks/core.config');
-    const flecks = Object.keys(defaultConfig);
+  /**
+   * Configure defaults for all flecks.
+   *
+   * @protected
+   */
+  configureFlecksDefaults() {
+    const flecks = this.flecksImplementing('@flecks/core.config');
     for (let i = 0; i < flecks.length; i++) {
-      this.configureFleck(flecks[i]);
+      this.configureFleckDefaults(flecks[i]);
     }
   }
 
+  /**
+   * [Dasherize]{@link https://en.wiktionary.org/wiki/dasherize} a fleck path.
+   *
+   * @param {string} path The path to dasherize.
+   * @returns {string}
+   */
+  static dasherizePath(path) {
+    const parts = dirname(path).split('/');
+    if ('.' === parts[0]) {
+      parts.shift();
+    }
+    if ('index' === parts[parts.length - 1]) {
+      parts.pop();
+    }
+    return join(parts.join('-'), basename(path, extname(path)));
+  }
+
+  /**
+   * Generate a decorator from a require context.
+   *
+   * @param {*} context @see {@link https://webpack.js.org/guides/dependency-management/#requirecontext}
+   * @param {object} config
+   * @param {function} [config.transformer = {@link camelCase}]
+   *   Function to run on each context path.
+   * @returns {function} The decorator.
+   */
   static decorate(
     context,
     {
       transformer = camelCase,
     } = {},
   ) {
-    return (Gathered, flecks) => {
+    return (Gathered, flecks) => (
       context.keys()
-        .forEach((path) => {
-          const {default: M} = context(path);
-          if ('function' !== typeof M) {
-            throw new ReferenceError(
-              `Flecks.decorate(): require(${
-                path
-              }).default is not a function (from: ${
-                context.id
-              })`,
-            );
-          }
-          const key = transformer(this.symbolizePath(path));
-          if (Gathered[key]) {
-            // eslint-disable-next-line no-param-reassign
-            Gathered[key] = M(Gathered[key], flecks);
-          }
-        });
-      return Gathered;
-    };
+        .reduce(
+          (Gathered, path) => {
+            const key = transformer(this.dasherizePath(path));
+            if (!Gathered[key]) {
+              return Gathered;
+            }
+            const {default: M} = context(path);
+            if ('function' !== typeof M) {
+              throw new ReferenceError(
+                `Flecks.decorate(): require(${path}).default is not a function (from: ${context.id})`,
+              );
+            }
+            return {...Gathered, [key]: M(Gathered[key], flecks)};
+          },
+          Gathered,
+        )
+    );
   }
 
+  /**
+   * Destroy this instance.
+   */
   destroy() {
     this.config = {};
     this.hooks = {};
@@ -116,12 +179,20 @@ export default class Flecks {
     this.platforms = [];
   }
 
+  /**
+   * Lists all flecks implementing a hook, including platform-specific and elided variants.
+   *
+   * @param {string} hook
+   * @returns {string[]} The expanded list of flecks.
+   */
   expandedFlecks(hook) {
     const flecks = this.lookupFlecks(hook);
     let expanded = [];
     for (let i = 0; i < flecks.length; ++i) {
       const fleck = flecks[i];
+      // Just the fleck.
       expanded.push(fleck);
+      // Platform-specific variants.
       for (let j = 0; j < this.platforms.length; ++j) {
         const platform = this.platforms[j];
         const variant = join(fleck, platform);
@@ -130,6 +201,7 @@ export default class Flecks {
         }
       }
     }
+    // Expand elided flecks.
     const index = expanded.findIndex((fleck) => '...' === fleck);
     if (-1 !== index) {
       if (-1 !== expanded.slice(index + 1).findIndex((fleck) => '...' === fleck)) {
@@ -158,33 +230,66 @@ export default class Flecks {
     return expanded;
   }
 
+  /**
+   * Get the module for a fleck.
+   *
+   * @param {*} fleck
+   *
+   * @returns {*}
+   */
   fleck(fleck) {
     return this.flecks[fleck];
   }
 
+  /**
+   * Test whether a fleck implements a hook.
+   *
+   * @param {*} fleck
+   * @param {string} hook
+   * @returns {boolean}
+   */
   fleckImplements(fleck, hook) {
     return !!this.hooks[hook].find(({fleck: candidate}) => fleck === candidate);
   }
 
+  /**
+   * Get a list of flecks implementing a hook.
+   *
+   * @param {string} hook
+   * @returns {string[]}
+   */
   flecksImplementing(hook) {
     return this.hooks[hook]?.map(({fleck}) => fleck) || [];
   }
 
+  /**
+   * Gather and register class types.
+   *
+   * @param {string} hook
+   * @param {object} config
+   * @param {string} [config.idProperty='id'] The property used to get/set the class ID.
+   * @param {string} [config.typeProperty='type'] The property used to get/set the class type.
+   * @param {function} [config.check=() => {}] Check the validity of the gathered classes.
+   * @returns {object} An object with keys for ID, type, {@link ById}, and {@link ByType}.
+   */
   gather(
     hook,
     {
-      idAttribute = 'id',
-      typeAttribute = 'type',
+      idProperty = 'id',
+      typeProperty = 'type',
       check = () => {},
     } = {},
   ) {
     if (!hook || 'string' !== typeof hook) {
       throw new TypeError('Flecks.gather(): Expects parameter 1 (hook) to be string');
     }
+    // Gather classes and check.
     const raw = this.invokeMerge(hook);
     check(raw, hook);
+    // Decorate and check.
     const decorated = this.invokeComposed(`${hook}.decorate`, raw);
     check(decorated, `${hook}.decorate`);
+    // Assign unique IDs to each class and sort by type.
     let uid = 1;
     const ids = {};
     const types = (
@@ -193,50 +298,78 @@ export default class Flecks {
           .sort(([ltype], [rtype]) => (ltype < rtype ? -1 : 1))
           .map(([type, Class]) => {
             const id = uid++;
-            ids[id] = wrapperClass(Class, id, idAttribute, type, typeAttribute);
+            ids[id] = wrapGathered(Class, id, idProperty, type, typeProperty);
             return [type, ids[id]];
           }),
       )
     );
+    // Conglomerate all ID and type keys along with Symbols for accessing either/or.
     const gathered = {
       ...ids,
       ...types,
       [ById]: ids,
       [ByType]: types,
     };
-    hotGathered.set(hook, {idAttribute, gathered, typeAttribute});
+    // Register for HMR?
+    if (module.hot) {
+      hotGathered.set(hook, {idProperty, gathered, typeProperty});
+    }
     debug("gathered '%s': %O", hook, Object.keys(gathered[ByType]));
     return gathered;
   }
 
+  /**
+   * Get a configuration value.
+   *
+   * @param {string} path The configuration path e.g. `@flecks/example.config`.
+   * @param {*} defaultValue The default value if no configuration value is found.
+   * @returns {*}
+   */
   get(path, defaultValue) {
     return get(this.config, path, defaultValue);
   }
 
+  /**
+   * Return an object whose keys are fleck paths and values are the result of invoking the hook.
+   * @param {string} hook
+   * @param {...any} args Arguments passed to each implementation.
+   * @returns {*}
+   */
   invoke(hook, ...args) {
     if (!this.hooks[hook]) {
       return {};
     }
     return this.flecksImplementing(hook)
-      .reduce((r, fleck) => ({
-        ...r,
-        [fleck]: this.invokeFleck(hook, fleck, ...args),
-      }), {});
+      .reduce((r, fleck) => ({...r, [fleck]: this.invokeFleck(hook, fleck, ...args)}), {});
   }
 
-  invokeComposed(hook, arg, ...args) {
+  /**
+   * See: [function composition](https://www.educative.io/edpresso/function-composition-in-javascript).
+   *
+   * @configurable
+   * @param {string} hook
+   * @param {*} initial The initial value passed to the composition chain.
+   * @param  {...any} args The arguments passed after the accumulator to each implementation.
+   * @returns {*} The final composed value.
+   */
+  invokeComposed(hook, initial, ...args) {
     if (!this.hooks[hook]) {
-      return arg;
+      return initial;
     }
     const flecks = this.expandedFlecks(hook);
     if (0 === flecks.length) {
-      return arg;
+      return initial;
     }
     return flecks
       .filter((fleck) => this.fleckImplements(fleck, hook))
-      .reduce((r, fleck) => this.invokeFleck(hook, fleck, r, ...args), arg);
+      .reduce((r, fleck) => this.invokeFleck(hook, fleck, r, ...args), initial);
   }
 
+  /**
+   * An async version of `invokeComposed`.
+   *
+   * @see {@link Flecks#invokeComposed}
+   */
   async invokeComposedAsync(hook, arg, ...args) {
     if (!this.hooks[hook]) {
       return arg;
@@ -250,6 +383,13 @@ export default class Flecks {
       .reduce(async (r, fleck) => this.invokeFleck(hook, fleck, await r, ...args), arg);
   }
 
+  /**
+   * Invokes a hook and returns a flat array of results.
+   *
+   * @param {string} hook
+   * @param  {...any} args The arguments passed to each implementation.
+   * @returns {any[]}
+   */
   invokeFlat(hook, ...args) {
     if (!this.hooks[hook]) {
       return [];
@@ -257,6 +397,14 @@ export default class Flecks {
     return this.hooks[hook].map(({fleck}) => this.invokeFleck(hook, fleck, ...args));
   }
 
+  /**
+   * Invokes a hook on a single fleck.
+   *
+   * @param {string} hook
+   * @param {*} fleck
+   * @param  {...any} args
+   * @returns {*}
+   */
   invokeFleck(hook, fleck, ...args) {
     debugSilly('invokeFleck(%s, %s, ...)', hook, fleck);
     if (!this.hooks[hook]) {
@@ -270,33 +418,116 @@ export default class Flecks {
     return candidate.fn(...(args.concat(this)));
   }
 
+  static $$invokeMerge(r, o) {
+    return {...r, ...o};
+  }
+
+  /**
+   * Specialization of `invokeReduce`. Invokes a hook and reduces an object from all the resulting
+   * objects.
+   *
+   * @param {string} hook
+   * @param  {...any} args
+   * @returns {object}
+   */
   invokeMerge(hook, ...args) {
-    return this.invokeReduce(hook, (r, o) => ({...r, ...o}), {}, ...args);
+    return this.invokeReduce(hook, this.constructor.$$invokeMerge, {}, ...args);
   }
 
+  /**
+   * An async version of `invokeMerge`.
+   *
+   * @see {@link Flecks#invokeMerge}
+   */
   async invokeMergeAsync(hook, ...args) {
-    return this.invokeReduceAsync(hook, (r, o) => ({...r, ...o}), {}, ...args);
+    return this.invokeReduceAsync(hook, this.constructor.$$invokeMerge, {}, ...args);
   }
 
+  static $$invokeMergeUnique() {
+    const track = {};
+    return (r, o, fleck, hook) => {
+      const keys = Object.keys(o);
+      for (let i = 0; i < keys.length; ++i) {
+        const key = keys[i];
+        if (track[key]) {
+          throw new ReferenceError(
+            `Conflict in ${hook}: '${track[key]}' implemented '${key}', followed by '${fleck}'`,
+          );
+        }
+        track[key] = fleck;
+      }
+      return ({...r, ...o});
+    };
+  }
+
+  /**
+   * Specialization of `invokeMerge`. Invokes a hook and reduces an object from all the resulting
+   * objects.
+   *
+   * @param {string} hook
+   * @param  {...any} args
+   * @returns {object}
+   */
+  invokeMergeUnique(hook, ...args) {
+    return this.invokeReduce(hook, this.constructor.$$invokeMergeUnique(), {}, ...args);
+  }
+
+  /**
+   * An async version of `invokeMergeUnique`.
+   *
+   * @see {@link Flecks#invokeMergeUnique}
+   */
+  async invokeMergeUniqueAsync(hook, ...args) {
+    return this.invokeReduceAsync(hook, this.constructor.$$invokeMergeUnique(), {}, ...args);
+  }
+
+  /**
+   * See: [Array.prototype.reduce](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Reduce)
+   *
+   * @param {string} hook
+   * @param {*} reducer
+   * @param {*} initial
+   * @param  {...any} args The arguments passed after the accumulator to each implementation.
+   * @returns {*}
+   */
   invokeReduce(hook, reducer, initial, ...args) {
     if (!this.hooks[hook]) {
       return initial;
     }
     return this.hooks[hook]
-      .reduce((r, {fleck}) => reducer(r, this.invokeFleck(hook, fleck, ...args)), initial);
+      .reduce(
+        (r, {fleck}) => reducer(r, this.invokeFleck(hook, fleck, ...args), fleck, hook),
+        initial,
+      );
   }
 
+  /**
+   * An async version of `invokeReduce`.
+   *
+   * @see {@link Flecks#invokeReduce}
+   */
   async invokeReduceAsync(hook, reducer, initial, ...args) {
     if (!this.hooks[hook]) {
       return initial;
     }
     return this.hooks[hook]
       .reduce(
-        async (r, {fleck}) => reducer(await r, await this.invokeFleck(hook, fleck, ...args)),
+        async (r, {fleck}) => (
+          reducer(await r, await this.invokeFleck(hook, fleck, ...args), fleck, hook)
+        ),
         initial,
       );
   }
 
+  /**
+   * Invokes hooks on a fleck one after another. This is effectively a configurable version of
+   * {@link Flecks#invokeFlat}.
+   *
+   * @configurable
+   * @param {string} hook
+   * @param  {...any} args The arguments passed to each implementation.
+   * @returns {any[]}
+   */
   invokeSequential(hook, ...args) {
     if (!this.hooks[hook]) {
       return [];
@@ -315,6 +546,11 @@ export default class Flecks {
     return results;
   }
 
+  /**
+   * An async version of `invokeSequential`.
+   *
+   * @see {@link Flecks#invokeSequential}
+   */
   async invokeSequentialAsync(hook, ...args) {
     if (!this.hooks[hook]) {
       return [];
@@ -334,10 +570,18 @@ export default class Flecks {
     return results;
   }
 
-  isOnPlatform(platform) {
-    return -1 !== this.platforms.indexOf(platform);
-  }
-
+  /**
+   * Lookup flecks configured for a hook.
+   *
+   * If no configuration is found, defaults to ellipses.
+   *
+   * @param {string} hook
+   * @example
+   * # Given hook @flecks/example.hook, `flecks.yml` could be configured as such:
+   * '@flecks/example':
+   *   hook: ['...']
+   * @returns {string[]}
+   */
   lookupFlecks(hook) {
     const index = hook.indexOf('.');
     if (-1 === index) {
@@ -346,31 +590,37 @@ export default class Flecks {
     return this.get([hook.slice(0, index), hook.slice(index + 1)], ['...']);
   }
 
+  /**
+   * Make a middleware function from configured middleware.
+   * @param {string} hook
+   * @returns {function}
+   */
   makeMiddleware(hook) {
     debugSilly('makeMiddleware(...): %s', hook);
     if (!this.hooks[hook]) {
-      return Promise.resolve();
+      return (...args) => args.pop()();
     }
     const flecks = this.expandedFlecks(hook);
     if (0 === flecks.length) {
-      return Promise.resolve();
+      return (...args) => args.pop()();
     }
     const middleware = flecks
       .filter((fleck) => this.fleckImplements(fleck, hook));
     debugSilly('middleware: %O', middleware);
     const instance = new Middleware(middleware.map((fleck) => this.invokeFleck(hook, fleck)));
-    return async (...args) => {
-      const next = args.pop();
-      try {
-        await instance.promise(...args);
-        next();
-      }
-      catch (error) {
-        next(error);
-      }
-    };
+    return instance.dispatch.bind(instance);
   }
 
+  /**
+   * Provide classes for e.g. {@link Flecks#gather}
+   *
+   * @param {*} context @see {@link https://webpack.js.org/guides/dependency-management/#requirecontext}
+   * @param {object} config
+   * @param {function} [config.invoke = true] Invoke the default exports as a function?
+   * @param {function} [config.transformer = {@link camelCase}]
+   *   Function to run on each context path.
+   * @returns {object}
+   */
   static provide(
     context,
     {
@@ -393,7 +643,7 @@ export default class Flecks {
               );
             }
             return [
-              transformer(this.symbolizePath(path)),
+              transformer(this.dasherizePath(path)),
               invoke ? M(flecks) : M,
             ];
           }),
@@ -401,9 +651,103 @@ export default class Flecks {
     );
   }
 
+  /**
+   * Refresh a fleck's hooks, configuration, and any gathered classes.
+   *
+   * @example
+   * module.hot.accept('@flecks/example', async () => {
+   *   flecks.refresh('@flecks/example', require('@flecks/example'));
+   * });
+   * @param {string} fleck
+   * @param {object} M The fleck module
+   * @protected
+   */
   refresh(fleck, M) {
     debug('refreshing %s...', fleck);
     // Remove old hook implementations.
+    this.unregisterFleckHooks(fleck);
+    // Replace the fleck.
+    this.registerFleckHooks(fleck, M);
+    // Write config.
+    this.configureFleckDefaults(fleck);
+    // HMR.
+    if (module.hot) {
+      this.refreshGathered(fleck);
+    }
+  }
+
+  /**
+   * Refresh gathered classes for a fleck.
+   *
+   * @param {string} fleck
+   */
+  refreshGathered(fleck) {
+    const it = hotGathered.entries();
+    for (let current = it.next(); current.done !== true; current = it.next()) {
+      const {
+        value: [
+          hook,
+          {
+            idProperty,
+            gathered,
+            typeProperty,
+          },
+        ],
+      } = current;
+      const updates = this.invokeFleck(hook, fleck);
+      if (updates) {
+        debug('updating gathered %s from %s...', hook, fleck);
+        const entries = Object.entries(updates);
+        for (let i = 0, [type, Class] = entries[i]; i < entries.length; ++i) {
+          const {[type]: {[idProperty]: id}} = gathered;
+          const Subclass = wrapGathered(Class, id, idProperty, type, typeProperty);
+          // eslint-disable-next-line no-multi-assign
+          gathered[type] = gathered[id] = gathered[ById][id] = gathered[ByType][type] = Subclass;
+          this.invoke('@flecks/core.hmr.gathered', Subclass, hook);
+        }
+      }
+    }
+  }
+
+  /**
+   * Register hooks for a fleck.
+   *
+   * @param {string} fleck
+   * @param {object} M The fleck module
+   * @protected
+   */
+  registerFleckHooks(fleck, M) {
+    debugSilly('registering %s...', fleck);
+    this.flecks[fleck] = M;
+    if (M.hooks) {
+      const keys = Object.keys(M.hooks);
+      debugSilly("hooks for '%s': %O", fleck, keys);
+      for (let j = 0; j < keys.length; j++) {
+        const key = keys[j];
+        if (!this.hooks[key]) {
+          this.hooks[key] = [];
+        }
+        this.hooks[key].push({fleck, fn: M.hooks[key]});
+      }
+    }
+  }
+
+  /**
+   * Set a configuration value.
+   *
+   * @param {string} path The configuration path e.g. `@flecks/example.config`.
+   * @param {*} value The value to set.
+   * @returns {*} The value that was set.
+   */
+  set(path, value) {
+    return set(this.config, path, value);
+  }
+
+  /**
+   * Unregister hooks for a fleck.
+   * @param {*} fleck
+   */
+  unregisterFleckHooks(fleck) {
     const keys = Object.keys(this.hooks);
     for (let j = 0; j < keys.length; j++) {
       const key = keys[j];
@@ -414,82 +758,6 @@ export default class Flecks {
         }
       }
     }
-    // Replace the fleck.
-    this.registerFleck(fleck, M);
-    // Write config.
-    this.configureFleck(fleck);
-    // HMR.
-    this.updateHotGathered(fleck);
-  }
-
-  registerFleck(fleck, M) {
-    debugSilly('registering %s...', fleck);
-    this.flecks[fleck] = M;
-    if (M.default) {
-      const {default: {[Hooks]: hooks}} = M;
-      if (hooks) {
-        const keys = Object.keys(hooks);
-        debugSilly("hooks for '%s': %O", fleck, keys);
-        for (let j = 0; j < keys.length; j++) {
-          const key = keys[j];
-          if (!this.hooks[key]) {
-            this.hooks[key] = [];
-          }
-          this.hooks[key].push({fleck, fn: hooks[key]});
-        }
-      }
-    }
-    else {
-      debugSilly("'%s' has no default export", fleck);
-    }
-  }
-
-  set(path, value) {
-    return set(this.config, path, value);
-  }
-
-  static symbolizePath(path) {
-    const parts = dirname(path).split('/');
-    if ('.' === parts[0]) {
-      parts.shift();
-    }
-    if ('index' === parts[parts.length - 1]) {
-      parts.pop();
-    }
-    return join(parts.join('-'), basename(path, extname(path)));
-  }
-
-  async up(hook) {
-    await Promise.all(this.invokeFlat('@flecks/core.starting'));
-    await this.invokeSequentialAsync(hook);
-  }
-
-  updateHotGathered(fleck) {
-    const it = hotGathered.entries();
-    for (let current = it.next(); current.done !== true; current = it.next()) {
-      const {
-        value: [
-          hook,
-          {
-            idAttribute,
-            gathered,
-            typeAttribute,
-          },
-        ],
-      } = current;
-      const updates = this.invokeFleck(hook, fleck);
-      if (updates) {
-        debug('updating gathered %s from %s...', hook, fleck);
-        const entries = Object.entries(updates);
-        for (let i = 0, [type, Class] = entries[i]; i < entries.length; ++i) {
-          const {[type]: {[idAttribute]: id}} = gathered;
-          const Subclass = wrapperClass(Class, id, idAttribute, type, typeAttribute);
-          // eslint-disable-next-line no-multi-assign
-          gathered[type] = gathered[id] = gathered[ById][id] = gathered[ByType][type] = Subclass;
-          this.invoke('@flecks/core.hmr.gathered', Subclass, hook);
-        }
-      }
-    }
   }
 
 }
diff --git a/packages/core/src/index.js b/packages/core/src/index.js
index 73aeee9..e1d8f51 100644
--- a/packages/core/src/index.js
+++ b/packages/core/src/index.js
@@ -1,24 +1,18 @@
-import {Hooks} from './flecks';
-
 export {default as Class} from './class';
 export {default as compose} from './compose';
 export {default as D} from './debug';
-export {default as ensureUniqueReduction} from './ensure-unique-reduction';
 export {default as EventEmitter} from './event-emitter';
 export {
   default as Flecks,
   ById,
   ByType,
-  Hooks,
 } from './flecks';
 
-export default {
-  [Hooks]: {
-    '@flecks/core.config': () => ({
-      /**
-       * The ID of your application.
-       */
-      id: 'flecks',
-    }),
-  },
+export const hooks = {
+  '@flecks/core.config': () => ({
+    /**
+     * The ID of your application.
+     */
+    id: 'flecks',
+  }),
 };
diff --git a/packages/core/src/server/build/.eslint.defaults.js b/packages/core/src/server/build/.eslint.defaults.js
index 8cb1d1a..d6b5166 100644
--- a/packages/core/src/server/build/.eslint.defaults.js
+++ b/packages/core/src/server/build/.eslint.defaults.js
@@ -34,6 +34,7 @@ module.exports = {
   rules: {
     'babel/object-curly-spacing': 'off',
     'brace-style': ['error', 'stroustrup'],
+    'import/prefer-default-export': 'off',
     'jsx-a11y/control-has-associated-label': ['error', {assert: 'either'}],
     'jsx-a11y/label-has-associated-control': ['error', {assert: 'either'}],
     'no-plusplus': 'off',
diff --git a/packages/core/src/server/build/eslintrc.js b/packages/core/src/server/build/eslintrc.js
index d1d2a15..3a73bdc 100644
--- a/packages/core/src/server/build/eslintrc.js
+++ b/packages/core/src/server/build/eslintrc.js
@@ -22,6 +22,7 @@ const {
   FLECKS_CORE_SYNC_FOR_ESLINT = false,
 } = process.env;
 
+// This is kinda nuts, but ESLint doesn't support its configuration files returning a promise!
 if (FLECKS_CORE_SYNC_FOR_ESLINT) {
   (async () => {
     debug('bootstrapping flecks...');
@@ -50,6 +51,7 @@ else {
     module.exports = JSON.parse(readFileSync(join(cacheDirectory, 'eslintrc.json')).toString());
   }
   catch (error) {
+    // Just silly. By synchronously spawning... ourselves, the spawned copy can use async.
     const {stderr, stdout} = spawnSync('node', [__filename], {
       env: {
         FLECKS_CORE_SYNC_FOR_ESLINT: true,
diff --git a/packages/core/src/server/index.js b/packages/core/src/server/index.js
index c7fed24..c355366 100644
--- a/packages/core/src/server/index.js
+++ b/packages/core/src/server/index.js
@@ -4,7 +4,6 @@ import {inspect} from 'util';
 import airbnb from '@neutrinojs/airbnb';
 import neutrino from 'neutrino';
 
-import {Hooks} from '../flecks';
 import commands from './commands';
 import R from '../bootstrap/require';
 
@@ -31,81 +30,79 @@ export {default as fleck} from '../bootstrap/fleck';
 export {default as require} from '../bootstrap/require';
 export {JsonStream, transform} from './stream';
 
-export default {
-  [Hooks]: {
-    '@flecks/core.build': (target, config, flecks) => {
-      const {
-        'eslint.exclude': exclude,
-        profile,
-      } = flecks.get('@flecks/core/server');
-      if (-1 !== profile.indexOf(target)) {
-        config.use.push(({config}) => {
-          config
-            .plugin('profiler')
-            .use(
-              R.resolve('webpack/lib/debug/ProfilingPlugin'),
-              [{outputPath: join(FLECKS_CORE_ROOT, `profile.build-${target}.json`)}],
-            );
-        });
-      }
-      if (-1 === exclude.indexOf(target)) {
-        const baseConfig = R(flecks.buildConfig('.eslint.defaults.js', target));
-        const webpackConfig = neutrino(config).webpack();
-        config.use.unshift(
-          airbnb({
-            eslint: {
-              baseConfig: {
-                ...baseConfig,
-                settings: {
-                  ...(baseConfig.settings || {}),
-                  'import/resolver': {
-                    ...(baseConfig.settings['import/resolver'] || {}),
-                    webpack: {
-                      config: {
-                        resolve: webpackConfig.resolve,
-                      },
+export const hooks = {
+  '@flecks/core.build': (target, config, flecks) => {
+    const {
+      'eslint.exclude': exclude,
+      profile,
+    } = flecks.get('@flecks/core/server');
+    if (-1 !== profile.indexOf(target)) {
+      config.use.push(({config}) => {
+        config
+          .plugin('profiler')
+          .use(
+            R.resolve('webpack/lib/debug/ProfilingPlugin'),
+            [{outputPath: join(FLECKS_CORE_ROOT, `profile.build-${target}.json`)}],
+          );
+      });
+    }
+    if (-1 === exclude.indexOf(target)) {
+      const baseConfig = R(flecks.buildConfig('.eslint.defaults.js', target));
+      const webpackConfig = neutrino(config).webpack();
+      config.use.unshift(
+        airbnb({
+          eslint: {
+            baseConfig: {
+              ...baseConfig,
+              settings: {
+                ...(baseConfig.settings || {}),
+                'import/resolver': {
+                  ...(baseConfig.settings['import/resolver'] || {}),
+                  webpack: {
+                    config: {
+                      resolve: webpackConfig.resolve,
                     },
                   },
                 },
               },
             },
-          }),
-        );
-      }
-    },
-    '@flecks/core.build.config': () => [
-      /**
-       * Babel configuration. See: https://babeljs.io/docs/en/config-files
-       */
-      'babel.config.js',
-      /**
-       * ESLint defaults. The default .eslintrc.js just reads from this file so that the build
-       * process can dynamically configure parts of ESLint.
-       */
-      ['.eslint.defaults.js', {specifier: (specific) => `${specific}.eslint.defaults.js`}],
-      /**
-       * ESLint configuration. See: https://eslint.org/docs/user-guide/configuring/
-       */
-      ['.eslintrc.js', {specifier: (specific) => `${specific}.eslintrc.js`}],
-      /**
-       * Neutrino build configuration. See: https://neutrinojs.org/usage/
-       */
-      ['.neutrinorc.js', {specifier: (specific) => `${specific}.neutrinorc.js`}],
-      /**
-       * Webpack (v4) configuration. See: https://v4.webpack.js.org/configuration/
-       */
-      'webpack.config.js',
-    ],
-    '@flecks/core.commands': commands,
-    '@flecks/core.config': () => ({
-      /**
-       * Build targets to exclude from ESLint.
-       */
-      'eslint.exclude': [],
-      /**
-       * Build targets to profile with `webpack.debug.ProfilingPlugin`.
-       */
-      profile: [],
-    }),
+          },
+        }),
+      );
+    }
   },
+  '@flecks/core.build.config': () => [
+    /**
+     * Babel configuration. See: https://babeljs.io/docs/en/config-files
+     */
+    'babel.config.js',
+    /**
+     * ESLint defaults. The default .eslintrc.js just reads from this file so that the build
+     * process can dynamically configure parts of ESLint.
+     */
+    ['.eslint.defaults.js', {specifier: (specific) => `${specific}.eslint.defaults.js`}],
+    /**
+     * ESLint configuration. See: https://eslint.org/docs/user-guide/configuring/
+     */
+    ['.eslintrc.js', {specifier: (specific) => `${specific}.eslintrc.js`}],
+    /**
+     * Neutrino build configuration. See: https://neutrinojs.org/usage/
+     */
+    ['.neutrinorc.js', {specifier: (specific) => `${specific}.neutrinorc.js`}],
+    /**
+     * Webpack (v4) configuration. See: https://v4.webpack.js.org/configuration/
+     */
+    'webpack.config.js',
+  ],
+  '@flecks/core.commands': commands,
+  '@flecks/core.config': () => ({
+    /**
+     * Build targets to exclude from ESLint.
+     */
+    'eslint.exclude': [],
+    /**
+     * Build targets to profile with `webpack.debug.ProfilingPlugin`.
+     */
+    profile: [],
+  }),
 };
diff --git a/packages/core/test/invoke.js b/packages/core/test/invoke.js
index 708a62f..a830487 100644
--- a/packages/core/test/invoke.js
+++ b/packages/core/test/invoke.js
@@ -1,7 +1,12 @@
-import {expect} from 'chai';
+import chai from 'chai';
+import chaiAsPromised from 'chai-as-promised';
 
 import {Flecks} from '@flecks/core';
 
+chai.use(chaiAsPromised);
+
+const {expect} = chai;
+
 const testOne = require('./one');
 const testTwo = require('./two');
 
@@ -33,3 +38,13 @@ it('can invoke merge async', async () => {
   expect(await flecks.invokeMergeAsync('@flecks/core/test/invoke-merge-async'))
     .to.deep.equal({foo: 69, bar: 420});
 });
+
+it('can enforce uniqueness', () => {
+  expect(() => flecks.invokeMergeUnique('@flecks/core/test/invoke-merge-unique'))
+    .to.throw(ReferenceError);
+});
+
+it('can enforce uniqueness async', async () => {
+  expect(flecks.invokeMergeUniqueAsync('@flecks/core/test/invoke-merge-unique-async'))
+    .to.be.rejectedWith(ReferenceError);
+});
diff --git a/packages/core/test/middleware.js b/packages/core/test/middleware.js
new file mode 100644
index 0000000..bbeb25e
--- /dev/null
+++ b/packages/core/test/middleware.js
@@ -0,0 +1,51 @@
+import {expect} from 'chai';
+
+import {Flecks} from '@flecks/core';
+
+const testOne = require('./one');
+const testTwo = require('./two');
+
+it('can make middleware', (done) => {
+  let flecks;
+  let foo;
+  let mw;
+  flecks = new Flecks({
+    config: {
+      '@flecks/core/test': {
+        middleware: [
+          '@flecks/core/one',
+          '@flecks/core/two',
+        ],
+      },
+    },
+    flecks: {
+      '@flecks/core/one': testOne,
+      '@flecks/core/two': testTwo,
+    },
+  });
+  foo = {bar: 1};
+  mw = flecks.makeMiddleware('@flecks/core/test.middleware');
+  mw(foo, () => {
+    expect(foo.bar).to.equal(4);
+    flecks = new Flecks({
+      config: {
+        '@flecks/core/test': {
+          middleware: [
+            '@flecks/core/two',
+            '@flecks/core/one',
+          ],
+        },
+      },
+      flecks: {
+        '@flecks/core/one': testOne,
+        '@flecks/core/two': testTwo,
+      },
+    });
+    foo = {bar: 1};
+    mw = flecks.makeMiddleware('@flecks/core/test.middleware');
+    mw(foo, () => {
+      expect(foo.bar).to.equal(3);
+      done();
+    });
+  });
+});
diff --git a/packages/core/test/one/index.js b/packages/core/test/one/index.js
index c8c3840..329ea1b 100644
--- a/packages/core/test/one/index.js
+++ b/packages/core/test/one/index.js
@@ -1,5 +1,5 @@
 // eslint-disable-next-line import/no-extraneous-dependencies, import/no-unresolved
-import {Flecks, Hooks} from '@flecks/core';
+import {Flecks} from '@flecks/core';
 
 export const testNodespace = () => [
   /* eslint-disable no-eval */
@@ -8,23 +8,28 @@ export const testNodespace = () => [
   /* eslint-enable no-eval */
 ];
 
-export default {
-  [Hooks]: {
-    '@flecks/core.config': () => ({
-      foo: 'bar',
-    }),
-    '@flecks/core/one/test-gather': (
-      Flecks.provide(require.context('./things', false, /\.js$/))
-    ),
-    '@flecks/core/one/test-gather.decorate': (
-      Flecks.decorate(require.context('./things/decorators', false, /\.js$/))
-    ),
-    '@flecks/core/test/invoke': () => 69,
-    '@flecks/core/test/invoke-parallel': (O) => {
-      // eslint-disable-next-line no-param-reassign
-      O.foo *= 2;
-    },
-    '@flecks/core/test/invoke-merge': () => ({foo: 69}),
-    '@flecks/core/test/invoke-merge-async': () => new Promise((resolve) => resolve({foo: 69})),
+export const hooks = {
+  '@flecks/core.config': () => ({
+    foo: 'bar',
+  }),
+  '@flecks/core/one/test-gather': (
+    Flecks.provide(require.context('./things', false, /\.js$/))
+  ),
+  '@flecks/core/one/test-gather.decorate': (
+    Flecks.decorate(require.context('./things/decorators', false, /\.js$/))
+  ),
+  '@flecks/core/test/invoke': () => 69,
+  '@flecks/core/test/invoke-parallel': (O) => {
+    // eslint-disable-next-line no-param-reassign
+    O.foo *= 2;
+  },
+  '@flecks/core/test/invoke-merge': () => ({foo: 69}),
+  '@flecks/core/test/invoke-merge-async': () => new Promise((resolve) => resolve({foo: 69})),
+  '@flecks/core/test/invoke-merge-unique': () => ({foo: 69}),
+  '@flecks/core/test/invoke-merge-unique-async': () => new Promise((resolve) => resolve({foo: 69})),
+  '@flecks/core/test.middleware': () => (foo, next) => {
+    // eslint-disable-next-line no-param-reassign
+    foo.bar += 1;
+    next();
   },
 };
diff --git a/packages/core/test/two/index.js b/packages/core/test/two/index.js
index 86e323b..847dbe8 100644
--- a/packages/core/test/two/index.js
+++ b/packages/core/test/two/index.js
@@ -1,19 +1,24 @@
-import {Flecks, Hooks} from '@flecks/core';
+import {Flecks} from '@flecks/core';
 
-export default {
-  [Hooks]: {
-    '@flecks/core/one/test-gather': (
-      Flecks.provide(require.context('./things', false, /\.js$/))
-    ),
-    '@flecks/core/test/invoke': () => 420,
-    '@flecks/core/test/invoke-parallel': (O) => new Promise((resolve) => {
-      setTimeout(() => {
-        // eslint-disable-next-line no-param-reassign
-        O.foo += 2;
-        resolve();
-      }, 0);
-    }),
-    '@flecks/core/test/invoke-merge': () => ({bar: 420}),
-    '@flecks/core/test/invoke-merge-async': () => new Promise((resolve) => resolve({bar: 420})),
+export const hooks = {
+  '@flecks/core/one/test-gather': (
+    Flecks.provide(require.context('./things', false, /\.js$/))
+  ),
+  '@flecks/core/test/invoke': () => 420,
+  '@flecks/core/test/invoke-parallel': (O) => new Promise((resolve) => {
+    setTimeout(() => {
+      // eslint-disable-next-line no-param-reassign
+      O.foo += 2;
+      resolve();
+    }, 0);
+  }),
+  '@flecks/core/test/invoke-merge': () => ({bar: 420}),
+  '@flecks/core/test/invoke-merge-async': () => new Promise((resolve) => resolve({bar: 420})),
+  '@flecks/core/test/invoke-merge-unique': () => ({foo: 69}),
+  '@flecks/core/test/invoke-merge-unique-async': () => new Promise((resolve) => resolve({foo: 69})),
+  '@flecks/core/test.middleware': () => (foo, next) => {
+    // eslint-disable-next-line no-param-reassign
+    foo.bar *= 2;
+    next();
   },
 };
diff --git a/packages/db/build/dox/hooks.js b/packages/db/build/dox/hooks.js
index b395991..82b8696 100644
--- a/packages/db/build/dox/hooks.js
+++ b/packages/db/build/dox/hooks.js
@@ -1,28 +1,24 @@
-import {Hooks} from '@flecks/core';
+export const hooks = {
+  /**
+   * Gather database models.
+   *
+   * In the example below, your fleck would have a `models` subdirectory, and each model would be
+   * defined in its own file.
+   * See: https://github.com/cha0s/flecks/tree/master/packages/user/src/server/models
+   */
+  '@flecks/db/server.models': Flecks.provide(require.context('./models', false, /\.js$/)),
 
-export default {
-  [Hooks]: {
-    /**
-     * Gather database models.
-     *
-     * In the example below, your fleck would have a `models` subdirectory, and each model would be
-     * defined in its own file.
-     * See: https://github.com/cha0s/flecks/tree/master/packages/user/src/server/models
-     */
-    '@flecks/db/server.models': Flecks.provide(require.context('./models', false, /\.js$/)),
-
-    /**
-     * Decorate database models.
-     *
-     * In the example below, your fleck would have a `models/decorators` subdirectory, and each
-     * decorator would be defined in its own file.
-     * See: https://github.com/cha0s/flecks/tree/master/packages/user/src/local/server/models/decorators
-     *
-     * @param {constructor} Model The model to decorate.
-     */
-    '@flecks/db/server.models.decorate': (
-      Flecks.decorate(require.context('./models/decorators', false, /\.js$/))
-    ),
-  },
+  /**
+   * Decorate database models.
+   *
+   * In the example below, your fleck would have a `models/decorators` subdirectory, and each
+   * decorator would be defined in its own file.
+   * See: https://github.com/cha0s/flecks/tree/master/packages/user/src/local/server/models/decorators
+   *
+   * @param {constructor} Model The model to decorate.
+   */
+  '@flecks/db/server.models.decorate': (
+    Flecks.decorate(require.context('./models/decorators', false, /\.js$/))
+  ),
 };
 
diff --git a/packages/db/src/server.js b/packages/db/src/server.js
index 45eed1d..b26c2a3 100644
--- a/packages/db/src/server.js
+++ b/packages/db/src/server.js
@@ -1,5 +1,3 @@
-import {Hooks} from '@flecks/core';
-
 import {createDatabaseConnection} from './connection';
 import containers from './containers';
 
@@ -9,49 +7,47 @@ export {default as Model} from './model';
 
 export {createDatabaseConnection};
 
-export default {
-  [Hooks]: {
-    '@flecks/core.config': () => ({
-      /**
-       * The database to connect to.
-       */
-      database: ':memory:',
-      /**
-       * SQL dialect.
-       *
-       * See: https://sequelize.org/v5/manual/dialects.html
-       */
-      dialect: 'sqlite',
-      /**
-       * Database server host.
-       */
-      host: undefined,
-      /**
-       * Database server password.
-       */
-      password: undefined,
-      /**
-       * Database server port.
-       */
-      port: undefined,
-      /**
-       * Database server username.
-       */
-      username: undefined,
-    }),
-    '@flecks/core.starting': (flecks) => {
-      flecks.set('$flecks/db.models', flecks.gather(
-        '@flecks/db/server.models',
-        {typeAttribute: 'name'},
-      ));
-    },
-    '@flecks/docker.containers': containers,
-    '@flecks/server.up': async (flecks) => {
-      flecks.set('$flecks/db/sequelize', await createDatabaseConnection(flecks));
-    },
-    '@flecks/repl.context': (flecks) => ({
-      Models: flecks.get('$flecks/db.models'),
-      sequelize: flecks.get('$flecks/db/sequelize'),
-    }),
+export const hooks = {
+  '@flecks/core.config': () => ({
+    /**
+     * The database to connect to.
+     */
+    database: ':memory:',
+    /**
+     * SQL dialect.
+     *
+     * See: https://sequelize.org/v5/manual/dialects.html
+     */
+    dialect: 'sqlite',
+    /**
+     * Database server host.
+     */
+    host: undefined,
+    /**
+     * Database server password.
+     */
+    password: undefined,
+    /**
+     * Database server port.
+     */
+    port: undefined,
+    /**
+     * Database server username.
+     */
+    username: undefined,
+  }),
+  '@flecks/core.starting': (flecks) => {
+    flecks.set('$flecks/db.models', flecks.gather(
+      '@flecks/db/server.models',
+      {typeProperty: 'name'},
+    ));
   },
+  '@flecks/docker.containers': containers,
+  '@flecks/server.up': async (flecks) => {
+    flecks.set('$flecks/db/sequelize', await createDatabaseConnection(flecks));
+  },
+  '@flecks/repl.context': (flecks) => ({
+    Models: flecks.get('$flecks/db.models'),
+    sequelize: flecks.get('$flecks/db/sequelize'),
+  }),
 };
diff --git a/packages/docker/build/dox/hooks.js b/packages/docker/build/dox/hooks.js
index 1acbb32..ddb653b 100644
--- a/packages/docker/build/dox/hooks.js
+++ b/packages/docker/build/dox/hooks.js
@@ -1,27 +1,23 @@
-import {Hooks} from '@flecks/core';
-
-export default {
-  [Hooks]: {
-    /**
-     * Define docker containers.
-     *
-     * Beware: the user running the server must have Docker privileges.
-     * See: https://docs.docker.com/engine/install/linux-postinstall/#manage-docker-as-a-non-root-user
-     */
-    '@flecks/docker.containers': () => ({
-      someContainer: {
-        // Environment variables.
-        environment: {
-          SOME_CONTAINER_VAR: 'hello',
-        },
-        // The docker image.
-        image: 'some-image:latest',
-        // Some container path you'd like to persist. Flecks handles the host path.
-        mount: '/some/container/path',
-        // Expose ports.
-        ports: {3000: 3000},
+export const hooks = {
+  /**
+   * Define docker containers.
+   *
+   * Beware: the user running the server must have Docker privileges.
+   * See: https://docs.docker.com/engine/install/linux-postinstall/#manage-docker-as-a-non-root-user
+   */
+  '@flecks/docker.containers': () => ({
+    someContainer: {
+      // Environment variables.
+      environment: {
+        SOME_CONTAINER_VAR: 'hello',
       },
-    }),
-  },
+      // The docker image.
+      image: 'some-image:latest',
+      // Some container path you'd like to persist. Flecks handles the host path.
+      mount: '/some/container/path',
+      // Expose ports.
+      ports: {3000: 3000},
+    },
+  }),
 };
 
diff --git a/packages/docker/src/server.js b/packages/docker/src/server.js
index 413df06..b77ac02 100644
--- a/packages/docker/src/server.js
+++ b/packages/docker/src/server.js
@@ -1,26 +1,22 @@
-import {Hooks} from '@flecks/core';
-
 import commands from './commands';
 import startContainer from './start-container';
 
-export default {
-  [Hooks]: {
-    '@flecks/core.config': () => ({
-      /**
-       * Whether to run docker containers.
-       */
-      enabled: true,
-    }),
-    '@flecks/core.commands': commands,
-    '@flecks/server.up': async (flecks) => {
-      if (!flecks.get('@flecks/docker/server.enabled')) {
-        return;
-      }
-      const containers = await flecks.invokeMergeAsync('@flecks/docker.containers');
-      await Promise.all(
-        Object.entries(containers)
-          .map(([key, config]) => startContainer(flecks, key, config)),
-      );
-    },
+export const hooks = {
+  '@flecks/core.config': () => ({
+    /**
+     * Whether to run docker containers.
+     */
+    enabled: true,
+  }),
+  '@flecks/core.commands': commands,
+  '@flecks/server.up': async (flecks) => {
+    if (!flecks.get('@flecks/docker/server.enabled')) {
+      return;
+    }
+    const containers = await flecks.invokeMergeAsync('@flecks/docker.containers');
+    await Promise.all(
+      Object.entries(containers)
+        .map(([key, config]) => startContainer(flecks, key, config)),
+    );
   },
 };
diff --git a/packages/dox/src/parser.js b/packages/dox/src/parser.js
index ff70fc1..21d5f26 100644
--- a/packages/dox/src/parser.js
+++ b/packages/dox/src/parser.js
@@ -17,6 +17,7 @@ import {
   isObjectExpression,
   isStringLiteral,
   isThisExpression,
+  isVariableDeclaration,
 } from '@babel/types';
 import {require as R} from '@flecks/core/server';
 import {parse as parseComment} from 'comment-parser';
@@ -75,15 +76,14 @@ class ParserState {
 }
 
 const implementationVisitor = (fn) => ({
-  ExportDefaultDeclaration(path) {
+  ExportNamedDeclaration(path) {
     const {declaration} = path.node;
-    if (isObjectExpression(declaration)) {
-      const {properties} = declaration;
-      properties.forEach((property) => {
-        const {key, value} = property;
-        if (isIdentifier(key) && key.name === 'Hooks') {
-          if (isObjectExpression(value)) {
-            const {properties} = value;
+    if (isVariableDeclaration(declaration)) {
+      const {declarations} = declaration;
+      declarations.forEach((declarator) => {
+        if ('hooks' === declarator.id.name) {
+          if (isObjectExpression(declarator.init)) {
+            const {properties} = declarator.init;
             properties.forEach((property) => {
               const {key} = property;
               if (isLiteral(key)) {
diff --git a/packages/dox/src/server.js b/packages/dox/src/server.js
index be9d656..ada37ce 100644
--- a/packages/dox/src/server.js
+++ b/packages/dox/src/server.js
@@ -1,17 +1,13 @@
-import {Hooks} from '@flecks/core';
-
 import commands from './commands';
 
-export default {
-  [Hooks]: {
-    '@flecks/core.commands': commands,
-    '@flecks/core.config': () => ({
-      /**
-       * Rewrite the output filenames of source files.
-       *
-       * `filename.replace(new RegExp([key]), [value]);`
-       */
-      filenameRewriters: {},
-    }),
-  },
+export const hooks = {
+  '@flecks/core.commands': commands,
+  '@flecks/core.config': () => ({
+    /**
+     * Rewrite the output filenames of source files.
+     *
+     * `filename.replace(new RegExp([key]), [value]);`
+     */
+    filenameRewriters: {},
+  }),
 };
diff --git a/packages/electron/build/dox/hooks.js b/packages/electron/build/dox/hooks.js
index 2e716eb..5263dd2 100644
--- a/packages/electron/build/dox/hooks.js
+++ b/packages/electron/build/dox/hooks.js
@@ -1,24 +1,20 @@
-import {Hooks} from '@flecks/core';
+export const hooks = {
+  /**
+   * Invoked when electron is initializing.
+   * @param {Electron.App} app The electron app. See: https://www.electronjs.org/docs/latest/api/app
+   */
+  '@flecks/electron/server.initialize': (app) => {
+    app.on('will-quit', () => {
+      // ...
+    });
+  },
 
-export default {
-  [Hooks]: {
-    /**
-     * Invoked when electron is initializing.
-     * @param {Electron.App} app The electron app. See: https://www.electronjs.org/docs/latest/api/app
-     */
-    '@flecks/electron/server.initialize': (app) => {
-      app.on('will-quit', () => {
-        // ...
-      });
-    },
-
-    /**
-     * Invoked when a window is created
-     * @param {Electron.BrowserWindow} win The electron browser window. See: https://www.electronjs.org/docs/latest/api/browser-window
-     */
-    '@flecks/electron/server.window': (win) => {
-      win.maximize();
-    },
+  /**
+   * Invoked when a window is created
+   * @param {Electron.BrowserWindow} win The electron browser window. See: https://www.electronjs.org/docs/latest/api/browser-window
+   */
+  '@flecks/electron/server.window': (win) => {
+    win.maximize();
   },
 };
 
diff --git a/packages/electron/src/server/index.js b/packages/electron/src/server/index.js
index 99714cc..a34305f 100644
--- a/packages/electron/src/server/index.js
+++ b/packages/electron/src/server/index.js
@@ -1,7 +1,6 @@
 import cluster from 'cluster';
 import {join} from 'path';
 
-import {Hooks} from '@flecks/core';
 import {require as R} from '@flecks/core/server';
 import {
   app,
@@ -21,119 +20,117 @@ async function createWindow(flecks) {
   await flecks.invokeSequentialAsync('@flecks/electron/server.window', win);
 }
 
-export default {
-  [Hooks]: {
-    '@flecks/core.config': () => ({
-      /**
-       * Browser window options.
-       *
-       * See: https://www.electronjs.org/docs/latest/api/browser-window
-       */
-      browserWindowOptions: {},
-      /**
-       * Install devtools extensions (by default).
-       *
-       * If `true`, will install some devtools extensions based on which flecks are enabled.
-       *
-       * You can pass an array of Chrome store IDs to install a list of custom extensions.
-       *
-       * Extensions will not be installed if `'production' === process.env.NODE_ENV`
-       */
-      installExtensions: true,
-      /**
-       * Quit the app when all windows are closed.
-       */
-      quitOnClosed: true,
-      /**
-       * The URL to load in electron by default.
-       *
-       * Defaults to `http://${flecks.get('@flecks/web/server.public')}`.
-       */
-      url: undefined,
-    }),
-    '@flecks/core.webpack': (target, config) => {
-      const StartServerWebpackPlugin = R('start-server-webpack-plugin');
-      const plugin = config.plugins.find((plugin) => plugin instanceof StartServerWebpackPlugin);
-      // Extremely hackish, c'est la vie.
-      if (plugin) {
-        /* eslint-disable no-underscore-dangle */
-        plugin._startServer = function _startServerHacked(callback) {
-          const execArgv = this._getArgs();
-          const inspectPort = this._getInspectPort(execArgv);
-          const clusterOptions = {
-            args: [this._entryPoint],
-            exec: join(FLECKS_CORE_ROOT, 'node_modules', '.bin', 'electron'),
-            execArgv,
-          };
-          if (inspectPort) {
-            clusterOptions.inspectPort = inspectPort;
-          }
-          cluster.setupMaster(clusterOptions);
-          cluster.on('online', (worker) => {
-            callback(worker);
-          });
-          cluster.fork();
+export const hooks = {
+  '@flecks/core.config': () => ({
+    /**
+     * Browser window options.
+     *
+     * See: https://www.electronjs.org/docs/latest/api/browser-window
+     */
+    browserWindowOptions: {},
+    /**
+     * Install devtools extensions (by default).
+     *
+     * If `true`, will install some devtools extensions based on which flecks are enabled.
+     *
+     * You can pass an array of Chrome store IDs to install a list of custom extensions.
+     *
+     * Extensions will not be installed if `'production' === process.env.NODE_ENV`
+     */
+    installExtensions: true,
+    /**
+     * Quit the app when all windows are closed.
+     */
+    quitOnClosed: true,
+    /**
+     * The URL to load in electron by default.
+     *
+     * Defaults to `http://${flecks.get('@flecks/web/server.public')}`.
+     */
+    url: undefined,
+  }),
+  '@flecks/core.webpack': (target, config) => {
+    const StartServerWebpackPlugin = R('start-server-webpack-plugin');
+    const plugin = config.plugins.find((plugin) => plugin instanceof StartServerWebpackPlugin);
+    // Extremely hackish, c'est la vie.
+    if (plugin) {
+      /* eslint-disable no-underscore-dangle */
+      plugin._startServer = function _startServerHacked(callback) {
+        const execArgv = this._getArgs();
+        const inspectPort = this._getInspectPort(execArgv);
+        const clusterOptions = {
+          args: [this._entryPoint],
+          exec: join(FLECKS_CORE_ROOT, 'node_modules', '.bin', 'electron'),
+          execArgv,
         };
-        /* eslint-enable no-underscore-dangle */
-      }
-    },
-    '@flecks/electron/server.initialize': async (app, flecks) => {
-      app.on('window-all-closed', () => {
-        const {quitOnClosed} = flecks.get('@flecks/electron/server');
-        if (!quitOnClosed) {
-          return;
+        if (inspectPort) {
+          clusterOptions.inspectPort = inspectPort;
         }
-        // Apple has to be *special*.
-        if (process.platform === 'darwin') {
-          return;
-        }
-        app.quit();
-      });
-      app.on('activate', async () => {
-        if (BrowserWindow.getAllWindows().length === 0) {
-          createWindow();
-        }
-      });
-      await app.whenReady();
-      await createWindow(flecks);
-    },
-    '@flecks/electron/server.window': async (win, flecks) => {
-      const {public: $$public} = flecks.get('@flecks/web/server');
-      const {
-        installExtensions,
-        url = `http://${$$public}`,
-      } = flecks.get('@flecks/electron/server');
-      if (installExtensions && 'production' !== NODE_ENV) {
-        const {
-          default: installExtension,
-          REDUX_DEVTOOLS,
-          REACT_DEVELOPER_TOOLS,
-        } = __non_webpack_require__('electron-devtools-installer');
-        let extensions = installExtensions;
-        if (!Array.isArray(extensions)) {
-          extensions = [];
-          if (flecks.fleck('@flecks/react')) {
-            extensions.push(REACT_DEVELOPER_TOOLS);
-          }
-          if (flecks.fleck('@flecks/redux')) {
-            extensions.push(REDUX_DEVTOOLS);
-          }
-        }
-        await installExtension(extensions);
-      }
-      await win.loadURL(url);
-    },
-    '@flecks/repl.context': (flecks) => ({
-      electron: {
-        createWindow: () => createWindow(flecks),
-      },
-    }),
-    '@flecks/server.up': async (flecks) => {
-      // `app` will be undefined if we aren't running in an electron environment. Just bail.
-      if (!app) {
+        cluster.setupMaster(clusterOptions);
+        cluster.on('online', (worker) => {
+          callback(worker);
+        });
+        cluster.fork();
+      };
+      /* eslint-enable no-underscore-dangle */
+    }
+  },
+  '@flecks/electron/server.initialize': async (app, flecks) => {
+    app.on('window-all-closed', () => {
+      const {quitOnClosed} = flecks.get('@flecks/electron/server');
+      if (!quitOnClosed) {
         return;
       }
-      await flecks.invokeSequentialAsync('@flecks/electron/server.initialize', app);
+      // Apple has to be *special*.
+      if (process.platform === 'darwin') {
+        return;
+      }
+      app.quit();
+    });
+    app.on('activate', async () => {
+      if (BrowserWindow.getAllWindows().length === 0) {
+        createWindow();
+      }
+    });
+    await app.whenReady();
+    await createWindow(flecks);
+  },
+  '@flecks/electron/server.window': async (win, flecks) => {
+    const {public: $$public} = flecks.get('@flecks/web/server');
+    const {
+      installExtensions,
+      url = `http://${$$public}`,
+    } = flecks.get('@flecks/electron/server');
+    if (installExtensions && 'production' !== NODE_ENV) {
+      const {
+        default: installExtension,
+        REDUX_DEVTOOLS,
+        REACT_DEVELOPER_TOOLS,
+      } = __non_webpack_require__('electron-devtools-installer');
+      let extensions = installExtensions;
+      if (!Array.isArray(extensions)) {
+        extensions = [];
+        if (flecks.fleck('@flecks/react')) {
+          extensions.push(REACT_DEVELOPER_TOOLS);
+        }
+        if (flecks.fleck('@flecks/redux')) {
+          extensions.push(REDUX_DEVTOOLS);
+        }
+      }
+      await installExtension(extensions);
+    }
+    await win.loadURL(url);
+  },
+  '@flecks/repl.context': (flecks) => ({
+    electron: {
+      createWindow: () => createWindow(flecks),
     },
+  }),
+  '@flecks/server.up': async (flecks) => {
+    // `app` will be undefined if we aren't running in an electron environment. Just bail.
+    if (!app) {
+      return;
+    }
+    await flecks.invokeSequentialAsync('@flecks/electron/server.initialize', app);
   },
 };
diff --git a/packages/fleck/src/server/index.js b/packages/fleck/src/server/index.js
index b14ad94..c88ff94 100644
--- a/packages/fleck/src/server/index.js
+++ b/packages/fleck/src/server/index.js
@@ -1,21 +1,17 @@
-import {Hooks} from '@flecks/core';
-
 import commands from './commands';
 
-export default {
-  [Hooks]: {
-    '@flecks/core.commands': commands,
-    '@flecks/core.config': () => ({
-      /**
-       * Webpack stats configuration when building fleck target.
-       */
-      stats: {
-        children: false,
-        chunks: false,
-        colors: true,
-        modules: false,
-      },
-    }),
-    '@flecks/core.targets': () => ['fleck'],
-  },
+export const hooks = {
+  '@flecks/core.commands': commands,
+  '@flecks/core.config': () => ({
+    /**
+     * Webpack stats configuration when building fleck target.
+     */
+    stats: {
+      children: false,
+      chunks: false,
+      colors: true,
+      modules: false,
+    },
+  }),
+  '@flecks/core.targets': () => ['fleck'],
 };
diff --git a/packages/governor/src/server.js b/packages/governor/src/server.js
index fad2f82..042d7a7 100644
--- a/packages/governor/src/server.js
+++ b/packages/governor/src/server.js
@@ -1,135 +1,133 @@
-import {ByType, Flecks, Hooks} from '@flecks/core';
+import {ByType, Flecks} from '@flecks/core';
 
 import LimitedPacket from './limited-packet';
 import createLimiter from './limiter';
 
 export {default as createLimiter} from './limiter';
 
-export default {
-  [Hooks]: {
-    '@flecks/core.config': () => ({
-      /**
-       * All keys used to determine fingerprint.
-       */
+export const hooks = {
+  '@flecks/core.config': () => ({
+    /**
+     * All keys used to determine fingerprint.
+     */
+    keys: ['ip'],
+    web: {
       keys: ['ip'],
-      web: {
-        keys: ['ip'],
-        points: 60,
-        duration: 30,
-        ttl: 30,
-      },
-      socket: {
-        keys: ['ip'],
-        points: 60,
-        duration: 30,
-        ttl: 30,
-      },
-    }),
-    '@flecks/db/server.models': Flecks.provide(require.context('./models', false, /\.js$/)),
-    '@flecks/web/server.request.route': (flecks) => {
-      const {web} = flecks.get('@flecks/governor/server');
-      const limiter = flecks.get('$flecks/governor.web.limiter');
-      return async (req, res, next) => {
-        const {Ban} = flecks.get('$flecks/db.models');
-        try {
-          await Ban.check(req);
-        }
-        catch (error) {
-          res.status(403).send(`<pre>${error.message}</pre>`);
-          return;
-        }
-        req.ban = async (keys, ttl = 0) => {
-          const ban = Ban.fromRequest(req, keys, ttl);
-          await Ban.create({...ban});
-          res.status(403).send(`<pre>${Ban.format([ban])}</pre>`);
-        };
-        try {
-          await limiter.consume(req.ip);
-          next();
-        }
-        catch (error) {
-          const {ttl, keys} = web;
-          const ban = Ban.fromRequest(req, keys, ttl);
-          await Ban.create({...ban});
-          res.status(429).send(`<pre>${Ban.format([ban])}</pre>`);
-        }
-      };
+      points: 60,
+      duration: 30,
+      ttl: 30,
     },
-    '@flecks/server.up': async (flecks) => {
-      if (flecks.fleck('@flecks/web/server')) {
-        const {web} = flecks.get('@flecks/governor/server');
-        const limiter = await createLimiter(
-          flecks,
-          {
-            keyPrefix: '@flecks/governor.web.request.route',
-            ...web,
-          },
-        );
-        flecks.set('$flecks/governor.web.limiter', limiter);
+    socket: {
+      keys: ['ip'],
+      points: 60,
+      duration: 30,
+      ttl: 30,
+    },
+  }),
+  '@flecks/db/server.models': Flecks.provide(require.context('./models', false, /\.js$/)),
+  '@flecks/web/server.request.route': (flecks) => {
+    const {web} = flecks.get('@flecks/governor/server');
+    const limiter = flecks.get('$flecks/governor.web.limiter');
+    return async (req, res, next) => {
+      const {Ban} = flecks.get('$flecks/db.models');
+      try {
+        await Ban.check(req);
       }
-      if (flecks.fleck('@flecks/socket/server')) {
-        const {[ByType]: Packets} = flecks.get('$flecks/socket.packets');
-        const limiters = Object.fromEntries(
-          await Promise.all(
-            Object.entries(Packets)
-              .filter(([, Packet]) => Packet.limit)
-              .map(async ([name, Packet]) => (
-                [
-                  name,
-                  await createLimiter(
-                    flecks,
-                    {keyPrefix: `@flecks/governor.packet.${name}`, ...Packet.limit},
-                  ),
-                ]
-              )),
-          ),
-        );
-        flecks.set('$flecks/governor.packet.limiters', limiters);
-        const {socket} = flecks.get('@flecks/governor/server');
-        const limiter = await createLimiter(
-          flecks,
-          {
-            keyPrefix: '@flecks/governor.socket.request.socket',
-            ...socket,
-          },
-        );
-        flecks.set('$flecks/governor.socket.limiter', limiter);
+      catch (error) {
+        res.status(403).send(`<pre>${error.message}</pre>`);
+        return;
       }
-    },
-    '@flecks/socket/server.request.socket': (flecks) => {
-      const limiter = flecks.get('$flecks/governor.socket.limiter');
-      return async (socket, next) => {
-        const {handshake: req} = socket;
-        const {Ban} = flecks.get('$flecks/db.models');
-        try {
-          await Ban.check(req);
-        }
-        catch (error) {
-          next(error);
-          return;
-        }
-        req.ban = async (keys, ttl) => {
-          await Ban.create(Ban.fromRequest(req, keys, ttl));
-          socket.disconnect();
-        };
-        try {
-          await limiter.consume(req.ip);
-          next();
-        }
-        catch (error) {
-          const {ttl, keys} = socket;
-          await Ban.create(Ban.fromRequest(req, keys, ttl));
-          next(error);
-        }
+      req.ban = async (keys, ttl = 0) => {
+        const ban = Ban.fromRequest(req, keys, ttl);
+        await Ban.create({...ban});
+        res.status(403).send(`<pre>${Ban.format([ban])}</pre>`);
       };
-    },
-    '@flecks/socket.packets.decorate': (Packets, flecks) => (
-      Object.fromEntries(
-        Object.entries(Packets).map(([keyPrefix, Packet]) => [
-          keyPrefix,
-          !Packet.limit ? Packet : LimitedPacket(flecks, [keyPrefix, Packet]),
-        ]),
-      )
-    ),
+      try {
+        await limiter.consume(req.ip);
+        next();
+      }
+      catch (error) {
+        const {ttl, keys} = web;
+        const ban = Ban.fromRequest(req, keys, ttl);
+        await Ban.create({...ban});
+        res.status(429).send(`<pre>${Ban.format([ban])}</pre>`);
+      }
+    };
   },
+  '@flecks/server.up': async (flecks) => {
+    if (flecks.fleck('@flecks/web/server')) {
+      const {web} = flecks.get('@flecks/governor/server');
+      const limiter = await createLimiter(
+        flecks,
+        {
+          keyPrefix: '@flecks/governor.web.request.route',
+          ...web,
+        },
+      );
+      flecks.set('$flecks/governor.web.limiter', limiter);
+    }
+    if (flecks.fleck('@flecks/socket/server')) {
+      const {[ByType]: Packets} = flecks.get('$flecks/socket.packets');
+      const limiters = Object.fromEntries(
+        await Promise.all(
+          Object.entries(Packets)
+            .filter(([, Packet]) => Packet.limit)
+            .map(async ([name, Packet]) => (
+              [
+                name,
+                await createLimiter(
+                  flecks,
+                  {keyPrefix: `@flecks/governor.packet.${name}`, ...Packet.limit},
+                ),
+              ]
+            )),
+        ),
+      );
+      flecks.set('$flecks/governor.packet.limiters', limiters);
+      const {socket} = flecks.get('@flecks/governor/server');
+      const limiter = await createLimiter(
+        flecks,
+        {
+          keyPrefix: '@flecks/governor.socket.request.socket',
+          ...socket,
+        },
+      );
+      flecks.set('$flecks/governor.socket.limiter', limiter);
+    }
+  },
+  '@flecks/socket/server.request.socket': (flecks) => {
+    const limiter = flecks.get('$flecks/governor.socket.limiter');
+    return async (socket, next) => {
+      const {handshake: req} = socket;
+      const {Ban} = flecks.get('$flecks/db.models');
+      try {
+        await Ban.check(req);
+      }
+      catch (error) {
+        next(error);
+        return;
+      }
+      req.ban = async (keys, ttl) => {
+        await Ban.create(Ban.fromRequest(req, keys, ttl));
+        socket.disconnect();
+      };
+      try {
+        await limiter.consume(req.ip);
+        next();
+      }
+      catch (error) {
+        const {ttl, keys} = socket;
+        await Ban.create(Ban.fromRequest(req, keys, ttl));
+        next(error);
+      }
+    };
+  },
+  '@flecks/socket.packets.decorate': (Packets, flecks) => (
+    Object.fromEntries(
+      Object.entries(Packets).map(([keyPrefix, Packet]) => [
+        keyPrefix,
+        !Packet.limit ? Packet : LimitedPacket(flecks, [keyPrefix, Packet]),
+      ]),
+    )
+  ),
 };
diff --git a/packages/react/build/dox/hooks.js b/packages/react/build/dox/hooks.js
index d3f8eb8..145bf8d 100644
--- a/packages/react/build/dox/hooks.js
+++ b/packages/react/build/dox/hooks.js
@@ -1,36 +1,32 @@
-import {Hooks} from '@flecks/core';
-
-export default {
-  [Hooks]: {
-    /**
-     * Define React Providers.
-     *
-     * Note: `req` will be only be defined when server-side rendering.
-     * @param {http.ClientRequest} req The HTTP request object.
-     */
-    '@flecks/react.providers': (req) => {
-      // Generally it makes more sense to separate client and server concerns using platform
-      // naming conventions, but this is just a small contrived example.
-      return req ? serverSideProvider(req) : clientSideProvider();
-    },
-    /**
-     * Define root-level React components that are mounted as siblings on `#main`.
-     * Note: `req` will be only be defined when server-side rendering.
-     *
-     * Return either a React component or an array whose elements must either be a React component
-     * or an array of two elements where the first element is the component and the second element
-     * is the props passed to the component.
-     * @param {http.ClientRequest} req The HTTP request object.
-     */
-    '@flecks/react.roots': (req) => {
-      // Note that we're not returning `<Component />`, but `Component`.
-      return [
-        Component,
-        [SomeOtherComponent, {prop: 'value'}]
-      ];
-      // You can also just:
-      return Component;
-    },
+export const hooks = {
+  /**
+   * Define React Providers.
+   *
+   * Note: `req` will be only be defined when server-side rendering.
+   * @param {http.ClientRequest} req The HTTP request object.
+   */
+  '@flecks/react.providers': (req) => {
+    // Generally it makes more sense to separate client and server concerns using platform
+    // naming conventions, but this is just a small contrived example.
+    return req ? serverSideProvider(req) : clientSideProvider();
+  },
+  /**
+   * Define root-level React components that are mounted as siblings on `#main`.
+   * Note: `req` will be only be defined when server-side rendering.
+   *
+   * Return either a React component or an array whose elements must either be a React component
+   * or an array of two elements where the first element is the component and the second element
+   * is the props passed to the component.
+   * @param {http.ClientRequest} req The HTTP request object.
+   */
+  '@flecks/react.roots': (req) => {
+    // Note that we're not returning `<Component />`, but `Component`.
+    return [
+      Component,
+      [SomeOtherComponent, {prop: 'value'}]
+    ];
+    // You can also just:
+    return Component;
   },
 };
 
diff --git a/packages/react/src/client.js b/packages/react/src/client.js
index ac08dfd..8bb8850 100644
--- a/packages/react/src/client.js
+++ b/packages/react/src/client.js
@@ -1,4 +1,4 @@
-import {D, Hooks} from '@flecks/core';
+import {D} from '@flecks/core';
 import {hydrate, render} from '@hot-loader/react-dom';
 import React from 'react';
 
@@ -10,20 +10,18 @@ const debug = D('@flecks/react/client');
 
 export {FlecksContext};
 
-export default {
-  [Hooks]: {
-    '@flecks/web/client.up': async (flecks) => {
-      const {ssr} = flecks.get('@flecks/react');
-      debug('%sing...', ssr ? 'hydrat' : 'render');
-      (ssr ? hydrate : render)(
-        React.createElement(
-          React.StrictMode,
-          {},
-          [React.createElement(await root(flecks), {key: 'root'})],
-        ),
-        window.document.getElementById('root'),
-      );
-      debug('rendered');
-    },
+export const hooks = {
+  '@flecks/web/client.up': async (flecks) => {
+    const {ssr} = flecks.get('@flecks/react');
+    debug('%sing...', ssr ? 'hydrat' : 'render');
+    (ssr ? hydrate : render)(
+      React.createElement(
+        React.StrictMode,
+        {},
+        [React.createElement(await root(flecks), {key: 'root'})],
+      ),
+      window.document.getElementById('root'),
+    );
+    debug('rendered');
   },
 };
diff --git a/packages/react/src/index.js b/packages/react/src/index.js
index 05352a8..97599c1 100644
--- a/packages/react/src/index.js
+++ b/packages/react/src/index.js
@@ -1,5 +1,3 @@
-import {Hooks} from '@flecks/core';
-
 export {default as ReactDom} from '@hot-loader/react-dom';
 export {default as classnames} from 'classnames';
 export {default as PropTypes} from 'prop-types';
@@ -14,13 +12,11 @@ export {default as useEvent} from './hooks/use-event';
 export {default as useFlecks} from './hooks/use-flecks';
 export {default as usePrevious} from './hooks/use-previous';
 
-export default {
-  [Hooks]: {
-    '@flecks/core.config': () => ({
-      /**
-       * Whether to enable server-side rendering.
-       */
-      ssr: true,
-    }),
-  },
+export const hooks = {
+  '@flecks/core.config': () => ({
+    /**
+     * Whether to enable server-side rendering.
+     */
+    ssr: true,
+  }),
 };
diff --git a/packages/react/src/router/client.js b/packages/react/src/router/client.js
index 011a5a2..eca628e 100644
--- a/packages/react/src/router/client.js
+++ b/packages/react/src/router/client.js
@@ -1,15 +1,12 @@
-import {Hooks} from '@flecks/core';
 // eslint-disable-next-line import/no-extraneous-dependencies
 import {createReduxHistory, history} from '@flecks/react/router/context';
 import {unstable_HistoryRouter as HistoryRouter} from 'react-router-dom';
 import {HistoryRouter as ReduxHistoryRouter} from 'redux-first-history/rr6';
 
-export default {
-  [Hooks]: {
-    '@flecks/react.providers': (req, flecks) => (
-      flecks.fleck('@flecks/redux')
-        ? [ReduxHistoryRouter, {history: createReduxHistory(flecks.get('$flecks/redux.store'))}]
-        : [HistoryRouter, {history}]
-    ),
-  },
+export const hooks = {
+  '@flecks/react.providers': (req, flecks) => (
+    flecks.fleck('@flecks/redux')
+      ? [ReduxHistoryRouter, {history: createReduxHistory(flecks.get('$flecks/redux.store'))}]
+      : [HistoryRouter, {history}]
+  ),
 };
diff --git a/packages/react/src/router/index.js b/packages/react/src/router/index.js
index 591c801..a3981f2 100644
--- a/packages/react/src/router/index.js
+++ b/packages/react/src/router/index.js
@@ -1,17 +1,14 @@
-import {Hooks} from '@flecks/core';
 // eslint-disable-next-line import/no-extraneous-dependencies
 import {routerMiddleware, routerReducer} from '@flecks/react/router/context';
 
 export * from 'react-router-dom';
 export * from 'redux-first-history';
 
-export default {
-  [Hooks]: {
-    '@flecks/redux.slices': () => ({
-      router: routerReducer,
-    }),
-    '@flecks/redux.store': (options) => {
-      options.middleware.push(routerMiddleware);
-    },
+export const hooks = {
+  '@flecks/redux.slices': () => ({
+    router: routerReducer,
+  }),
+  '@flecks/redux.store': (options) => {
+    options.middleware.push(routerMiddleware);
   },
 };
diff --git a/packages/react/src/router/server.js b/packages/react/src/router/server.js
index b393727..0486759 100644
--- a/packages/react/src/router/server.js
+++ b/packages/react/src/router/server.js
@@ -1,10 +1,7 @@
-import {Hooks} from '@flecks/core';
 import {StaticRouter} from 'react-router-dom/server';
 
-export default {
-  [Hooks]: {
-    '@flecks/react.providers': (req, flecks) => (
-      flecks.get('@flecks/react.ssr') ? [StaticRouter, {location: req.url}] : []
-    ),
-  },
+export const hooks = {
+  '@flecks/react.providers': (req, flecks) => (
+    flecks.get('@flecks/react.ssr') ? [StaticRouter, {location: req.url}] : []
+  ),
 };
diff --git a/packages/react/src/server.js b/packages/react/src/server.js
index 00537c2..2bd2d98 100644
--- a/packages/react/src/server.js
+++ b/packages/react/src/server.js
@@ -1,28 +1,25 @@
-import {Hooks} from '@flecks/core';
 import {augmentBuild} from '@flecks/web/server';
 
 import ssr from './ssr';
 
-export default {
-  [Hooks]: {
-    '@flecks/core.build': (target, config, flecks) => {
-      // Resolution.
-      config.use.push(({config}) => {
-        config.resolve.alias
-          .set('react-native', 'react-native-web');
-        config.resolve.extensions
-          .prepend('.web.js')
-          .prepend('.web.jsx');
-      });
-      // Augment the build on behalf of a missing `@flecks/web`.
-      if (!flecks.fleck('@flecks/web/server')) {
-        flecks.registerBuildConfig('postcss.config.js', {fleck: '@flecks/web/server'});
-        flecks.registerResolver('@flecks/web');
-        augmentBuild(target, config, flecks);
-      }
-    },
-    '@flecks/web/server.stream.html': (stream, req, flecks) => (
-      flecks.get('@flecks/react.ssr') ? ssr(stream, req, flecks) : stream
-    ),
+export const hooks = {
+  '@flecks/core.build': (target, config, flecks) => {
+    // Resolution.
+    config.use.push(({config}) => {
+      config.resolve.alias
+        .set('react-native', 'react-native-web');
+      config.resolve.extensions
+        .prepend('.web.js')
+        .prepend('.web.jsx');
+    });
+    // Augment the build on behalf of a missing `@flecks/web`.
+    if (!flecks.fleck('@flecks/web/server')) {
+      flecks.registerBuildConfig('postcss.config.js', {fleck: '@flecks/web/server'});
+      flecks.registerResolver('@flecks/web');
+      augmentBuild(target, config, flecks);
+    }
   },
+  '@flecks/web/server.stream.html': (stream, req, flecks) => (
+    flecks.get('@flecks/react.ssr') ? ssr(stream, req, flecks) : stream
+  ),
 };
diff --git a/packages/redis/src/server.js b/packages/redis/src/server.js
index 29ade25..316a961 100644
--- a/packages/redis/src/server.js
+++ b/packages/redis/src/server.js
@@ -1,5 +1,3 @@
-import {Hooks} from '@flecks/core';
-
 import containers from './containers';
 import createClient from './create-client';
 
@@ -27,21 +25,19 @@ const safeKeys = async (client, pattern, caret) => {
 
 export const keys = (client, pattern) => safeKeys(client, pattern, 0);
 
-export default {
-  [Hooks]: {
-    '@flecks/core.config': () => ({
-      /**
-       * Redis server host.
-       */
-      host: 'localhost',
-      /**
-       * Redis server port.
-       */
-      port: 6379,
-    }),
-    '@flecks/docker.containers': containers,
-    '@flecks/repl.context': (flecks) => ({
-      redisClient: createClient(flecks),
-    }),
-  },
+export const hooks = {
+  '@flecks/core.config': () => ({
+    /**
+     * Redis server host.
+     */
+    host: 'localhost',
+    /**
+     * Redis server port.
+     */
+    port: 6379,
+  }),
+  '@flecks/docker.containers': containers,
+  '@flecks/repl.context': (flecks) => ({
+    redisClient: createClient(flecks),
+  }),
 };
diff --git a/packages/redis/src/session/server.js b/packages/redis/src/session/server.js
index 282d2e4..d126ac7 100644
--- a/packages/redis/src/session/server.js
+++ b/packages/redis/src/session/server.js
@@ -1,4 +1,4 @@
-import {D, Hooks} from '@flecks/core';
+import {D} from '@flecks/core';
 import redisAdapter from '@socket.io/redis-adapter';
 import ConnectRedis from 'connect-redis';
 import session from 'express-session';
@@ -10,23 +10,21 @@ const debugSilly = debug.extend('silly');
 
 const RedisStore = ConnectRedis(session);
 
-export default {
-  [Hooks]: {
-    '@flecks/user.session': async (flecks) => {
-      const client = createClient(flecks, {legacyMode: true});
-      await client.connect();
-      return {
-        store: new RedisStore({client}),
-      };
-    },
-    '@flecks/socket.server': async (flecks) => {
-      const pubClient = createClient(flecks);
-      const subClient = createClient(flecks);
-      await Promise.all([pubClient.connect(), subClient.connect()]);
-      debugSilly('creating adapter');
-      return {
-        adapter: redisAdapter(pubClient, subClient),
-      };
-    },
+export const hooks = {
+  '@flecks/user.session': async (flecks) => {
+    const client = createClient(flecks, {legacyMode: true});
+    await client.connect();
+    return {
+      store: new RedisStore({client}),
+    };
+  },
+  '@flecks/socket.server': async (flecks) => {
+    const pubClient = createClient(flecks);
+    const subClient = createClient(flecks);
+    await Promise.all([pubClient.connect(), subClient.connect()]);
+    debugSilly('creating adapter');
+    return {
+      adapter: redisAdapter(pubClient, subClient),
+    };
   },
 };
diff --git a/packages/redux/build/dox/hooks.js b/packages/redux/build/dox/hooks.js
index 0939102..ad427b2 100644
--- a/packages/redux/build/dox/hooks.js
+++ b/packages/redux/build/dox/hooks.js
@@ -1,45 +1,41 @@
-import {Hooks} from '@flecks/core';
-
-export default {
-  [Hooks]: {
-    /**
-     * Define side-effects to run against Redux actions.
-     */
-    '@flecks/redux.effects': () => ({
-      someActionName: (store, action) => {
-        // Runs when `someActionName` actions are dispatched.
-      },
-    }),
-    /**
-     * Define root-level reducers for the Redux store.
-     */
-    '@flecks/redux.reducers': () => {
-      return (state, action) => {
-        // Whatever you'd like.
-        return state;
-      };
-    },
-    /**
-     * Define Redux slices.
-     *
-     * See: https://redux-toolkit.js.org/api/createSlice
-     */
-    '@flecks/redux.slices': () => {
-      const something = createSlice(
-        // ...
-      );
-      return {
-        something: something.reducer,
-      };
-    },
-    /**
-     * Modify Redux store configuration.
-     * @param {Object} options A mutable object with keys for enhancers and middleware.
-     */
-    '@flecks/redux.store': (options) => {
-      options.enhancers.splice(someIndex, 1);
-      options.middleware.push(mySpecialMiddleware);
+export const hooks = {
+  /**
+   * Define side-effects to run against Redux actions.
+   */
+  '@flecks/redux.effects': () => ({
+    someActionName: (store, action) => {
+      // Runs when `someActionName` actions are dispatched.
     },
+  }),
+  /**
+   * Define root-level reducers for the Redux store.
+   */
+  '@flecks/redux.reducers': () => {
+    return (state, action) => {
+      // Whatever you'd like.
+      return state;
+    };
+  },
+  /**
+   * Define Redux slices.
+   *
+   * See: https://redux-toolkit.js.org/api/createSlice
+   */
+  '@flecks/redux.slices': () => {
+    const something = createSlice(
+      // ...
+    );
+    return {
+      something: something.reducer,
+    };
+  },
+  /**
+   * Modify Redux store configuration.
+   * @param {Object} options A mutable object with keys for enhancers and middleware.
+   */
+  '@flecks/redux.store': (options) => {
+    options.enhancers.splice(someIndex, 1);
+    options.middleware.push(mySpecialMiddleware);
   },
 };
 
diff --git a/packages/redux/src/client/index.js b/packages/redux/src/client/index.js
index 2356f77..074447c 100644
--- a/packages/redux/src/client/index.js
+++ b/packages/redux/src/client/index.js
@@ -1,26 +1,24 @@
-import {ensureUniqueReduction, Flecks, Hooks} from '@flecks/core';
+import {Flecks} from '@flecks/core';
 import {Provider} from 'react-redux';
 
 import configureStore, {createReducer} from '../store';
 import localStorageEnhancer from './local-storage';
 
-export default {
-  [Hooks]: {
-    '@flecks/react.providers': async (req, flecks) => {
-      const slices = await ensureUniqueReduction(flecks, '@flecks/redux.slices');
-      const reducer = createReducer(flecks, slices);
-      // Hydrate from server.
-      const {preloadedState} = flecks.get('@flecks/redux/client');
-      const store = await configureStore(flecks, reducer, {preloadedState});
-      flecks.set('$flecks/redux.store', store);
-      return [Provider, {store}];
-    },
-    '@flecks/redux.store': ({enhancers}) => {
-      // Hydrate from and subscribe to localStorage.
-      enhancers.push(localStorageEnhancer);
-    },
-    '@flecks/socket.packets.decorate': (
-      Flecks.decorate(require.context('./packets/decorators', false, /\.js$/))
-    ),
+export const hooks = {
+  '@flecks/react.providers': async (req, flecks) => {
+    const slices = await flecks.invokeMergeUnique('@flecks/redux.slices');
+    const reducer = createReducer(flecks, slices);
+    // Hydrate from server.
+    const {preloadedState} = flecks.get('@flecks/redux/client');
+    const store = await configureStore(flecks, reducer, {preloadedState});
+    flecks.set('$flecks/redux.store', store);
+    return [Provider, {store}];
   },
+  '@flecks/redux.store': ({enhancers}) => {
+    // Hydrate from and subscribe to localStorage.
+    enhancers.push(localStorageEnhancer);
+  },
+  '@flecks/socket.packets.decorate': (
+    Flecks.decorate(require.context('./packets/decorators', false, /\.js$/))
+  ),
 };
diff --git a/packages/redux/src/index.js b/packages/redux/src/index.js
index 1e5ff24..fed21b7 100644
--- a/packages/redux/src/index.js
+++ b/packages/redux/src/index.js
@@ -1,12 +1,10 @@
-import {Flecks, Hooks} from '@flecks/core';
+import {Flecks} from '@flecks/core';
 
 export * from '@reduxjs/toolkit';
 export * from 'react-redux';
 
 export * from './actions';
 
-export default {
-  [Hooks]: {
-    '@flecks/socket.packets': Flecks.provide(require.context('./packets', false, /\.js$/)),
-  },
+export const hooks = {
+  '@flecks/socket.packets': Flecks.provide(require.context('./packets', false, /\.js$/)),
 };
diff --git a/packages/redux/src/server.js b/packages/redux/src/server.js
index 2381f57..6ecb4ee 100644
--- a/packages/redux/src/server.js
+++ b/packages/redux/src/server.js
@@ -1,4 +1,4 @@
-import {D, ensureUniqueReduction, Hooks} from '@flecks/core';
+import {D} from '@flecks/core';
 import {Provider} from 'react-redux';
 
 import {hydrateServer} from './actions';
@@ -8,29 +8,27 @@ import configureStore from './store';
 const debug = D('@flecks/redux/server');
 const debugSilly = debug.extend('silly');
 
-export default {
-  [Hooks]: {
-    '@flecks/web/server.request.route': (flecks) => async (req, res, next) => {
-      const slices = await ensureUniqueReduction(flecks, '@flecks/redux.slices');
-      const reducer = createReducer(flecks, slices);
-      // Let the slices have a(n async) chance to hydrate with server data.
-      await Promise.all(
-        Object.values(slices).map(({hydrateServer}) => hydrateServer?.(req, flecks)),
-      );
-      const preloadedState = reducer(undefined, hydrateServer({flecks, req}));
-      debugSilly(
-        'creating redux store with slices(%O) and state(%O)',
-        Object.keys(slices),
-        preloadedState,
-      );
-      req.redux = await configureStore(flecks, reducer, {preloadedState});
-      next();
-    },
-    '@flecks/web.config': async (req) => ({
-      '@flecks/redux/client': {
-        preloadedState: req.redux.getState(),
-      },
-    }),
-    '@flecks/react.providers': (req) => [Provider, {store: req.redux}],
+export const hooks = {
+  '@flecks/web/server.request.route': (flecks) => async (req, res, next) => {
+    const slices = await flecks.invokeMergeUnique('@flecks/redux.slices');
+    const reducer = createReducer(flecks, slices);
+    // Let the slices have a(n async) chance to hydrate with server data.
+    await Promise.all(
+      Object.values(slices).map(({hydrateServer}) => hydrateServer?.(req, flecks)),
+    );
+    const preloadedState = reducer(undefined, hydrateServer({flecks, req}));
+    debugSilly(
+      'creating redux store with slices(%O) and state(%O)',
+      Object.keys(slices),
+      preloadedState,
+    );
+    req.redux = await configureStore(flecks, reducer, {preloadedState});
+    next();
   },
+  '@flecks/web.config': async (req) => ({
+    '@flecks/redux/client': {
+      preloadedState: req.redux.getState(),
+    },
+  }),
+  '@flecks/react.providers': (req) => [Provider, {store: req.redux}],
 };
diff --git a/packages/repl/build/dox/hooks.js b/packages/repl/build/dox/hooks.js
index fdd351f..a2167ed 100644
--- a/packages/repl/build/dox/hooks.js
+++ b/packages/repl/build/dox/hooks.js
@@ -1,30 +1,26 @@
-import {Hooks} from '@flecks/core';
-
-export default {
-  [Hooks]: {
-    /**
-     * Define REPL commands.
-     *
-     * Note: commands will be prefixed with a period in the Node REPL.
-     */
-    '@flecks/repl.commands': () => ({
-      someCommand: (...args) => {
-        // args are passed from the Node REPL. So, you could invoke it like:
-        // .someCommand foo bar
-        // and `args` would be `['foo', 'bar']`.
-      },
-    }),
-    /**
-     * Provide global context to the REPL.
-     */
-    '@flecks/repl.context': () => {
-      // Now you'd be able to do like:
-      // `node> someValue;`
-      // and the REPL would evaluate it to `'foobar'`.
-      return {
-        someValue: 'foobar',
-      };
+export const hooks = {
+  /**
+   * Define REPL commands.
+   *
+   * Note: commands will be prefixed with a period in the Node REPL.
+   */
+  '@flecks/repl.commands': () => ({
+    someCommand: (...args) => {
+      // args are passed from the Node REPL. So, you could invoke it like:
+      // .someCommand foo bar
+      // and `args` would be `['foo', 'bar']`.
     },
+  }),
+  /**
+   * Provide global context to the REPL.
+   */
+  '@flecks/repl.context': () => {
+    // Now you'd be able to do like:
+    // `node> someValue;`
+    // and the REPL would evaluate it to `'foobar'`.
+    return {
+      someValue: 'foobar',
+    };
   },
 };
 
diff --git a/packages/repl/src/server.js b/packages/repl/src/server.js
index 74a2f5b..ecf266a 100644
--- a/packages/repl/src/server.js
+++ b/packages/repl/src/server.js
@@ -1,11 +1,7 @@
-import {Hooks} from '@flecks/core';
-
 import commands from './commands';
 import {createReplServer} from './repl';
 
-export default {
-  [Hooks]: {
-    '@flecks/core.commands': commands,
-    '@flecks/server.up': (flecks) => createReplServer(flecks),
-  },
+export const hooks = {
+  '@flecks/core.commands': commands,
+  '@flecks/server.up': (flecks) => createReplServer(flecks),
 };
diff --git a/packages/server/build/dox/hooks.js b/packages/server/build/dox/hooks.js
index b6f1ac0..a780043 100644
--- a/packages/server/build/dox/hooks.js
+++ b/packages/server/build/dox/hooks.js
@@ -1,12 +1,8 @@
-import {Hooks} from '@flecks/core';
-
-export default {
-  [Hooks]: {
-    /**
-     * Define sequential actions to run when the server comes up.
-     */
-    '@flecks/server.up': async () => {
-      await youCanDoAsyncThingsHere();
-    },
+export const hooks = {
+  /**
+   * Define sequential actions to run when the server comes up.
+   */
+  '@flecks/server.up': async () => {
+    await youCanDoAsyncThingsHere();
   },
 };
diff --git a/packages/server/src/entry.js b/packages/server/src/entry.js
index 869992e..75fe283 100644
--- a/packages/server/src/entry.js
+++ b/packages/server/src/entry.js
@@ -33,7 +33,8 @@ const {version} = require('../package.json');
     rcs,
   });
   try {
-    await global.flecks.up('@flecks/server.up');
+    await Promise.all(global.flecks.invokeFlat('@flecks/core.starting'));
+    await global.flecks.invokeSequentialAsync('@flecks/server.up');
     debug('up!');
   }
   catch (error) {
diff --git a/packages/server/src/index.js b/packages/server/src/index.js
index 522d68c..4a688d5 100644
--- a/packages/server/src/index.js
+++ b/packages/server/src/index.js
@@ -1,28 +1,24 @@
-import {Hooks} from '@flecks/core';
-
-export default {
-  [Hooks]: {
-    '@flecks/core.config': () => ({
-      /**
-       * Whether HMR is enabled.
-       */
-      hot: false,
-      /**
-       * Arguments to pass along to node. See: https://nodejs.org/api/cli.html
-       */
-      nodeArgs: [],
-      /**
-       * Whether to start the server after building.
-       */
-      start: true,
-      /**
-       * Webpack stats configuration when building server target.
-       */
-      stats: {
-        chunks: false,
-        colors: true,
-        modules: false,
-      },
-    }),
-  },
+export const hooks = {
+  '@flecks/core.config': () => ({
+    /**
+     * Whether HMR is enabled.
+     */
+    hot: false,
+    /**
+     * Arguments to pass along to node. See: https://nodejs.org/api/cli.html
+     */
+    nodeArgs: [],
+    /**
+     * Whether to start the server after building.
+     */
+    start: true,
+    /**
+     * Webpack stats configuration when building server target.
+     */
+    stats: {
+      chunks: false,
+      colors: true,
+      modules: false,
+    },
+  }),
 };
diff --git a/packages/server/src/server/index.js b/packages/server/src/server/index.js
index 0ad1557..ee501fb 100644
--- a/packages/server/src/server/index.js
+++ b/packages/server/src/server/index.js
@@ -1,7 +1,3 @@
-import {Hooks} from '@flecks/core';
-
-export default {
-  [Hooks]: {
-    '@flecks/core.targets': () => ['server'],
-  },
+export const hooks = {
+  '@flecks/core.targets': () => ['server'],
 };
diff --git a/packages/socket/build/dox/hooks.js b/packages/socket/build/dox/hooks.js
index 482336d..878cd8a 100644
--- a/packages/socket/build/dox/hooks.js
+++ b/packages/socket/build/dox/hooks.js
@@ -1,65 +1,61 @@
-import {Hooks} from '@flecks/core';
-
-export default {
-  [Hooks]: {
-    /**
-     * Modify Socket.io client configuration.
-     *
-     * See: https://socket.io/docs/v4/client-options/
-     */
-    '@flecks/socket.client': () => ({
-      timeout: Infinity,
-    }),
-    /**
-     * Define server-side intercom channels.
-     */
-    '@flecks/socket.intercom': (req) => ({
-      // This would have been called like:
-      // `const result = await req.intercom('someChannel', payload)`.
-      // `result` will be an `n`-length array, where `n` is the number of server instances. Each
-      // element in the array will be the result of `someServiceSpecificInformation()` running
-      // against that server instance.
-      someChannel: async (payload, server) => {
-        return someServiceSpecificInformation();
-      },
-    }),
-    /**
-     * Define socket packets.
-     *
-     * In the example below, your fleck would have a `packets` subdirectory, and each
-     * decorator would be defined in its own file.
-     * See: https://github.com/cha0s/flecks/tree/master/packages/redux/src/packets
-     *
-     * See: https://github.com/cha0s/flecks/tree/master/packages/socket/src/packet/packet.js
-     * See: https://github.com/cha0s/flecks/tree/master/packages/socket/src/packet/redirect.js
-     */
-    '@flecks/socket.packets': Flecks.provide(require.context('./packets', false, /\.js$/)),
-    /**
-     * Decorate database models.
-     *
-     * In the example below, your fleck would have a `packets/decorators` subdirectory, and each
-     * decorator would be defined in its own file.
-     * @param {constructor} Packet The packet to decorate.
-     */
-    '@flecks/socket.packets.decorate': (
-      Flecks.decorate(require.context('./packets/decorators', false, /\.js$/))
-    ),
-
-    /**
-     * Modify Socket.io server configuration.
-     *
-     * See: https://socket.io/docs/v4/server-options/
-     */
-    '@flecks/socket.server': () => ({
-      pingTimeout: Infinity,
-    }),
-    /**
-     * Define middleware to run when a socket connection is established.
-     */
-    '@flecks/socket/server.request.socket': () => (socket, next) => {
-      // Express-style route middleware...
-      next();
+export const hooks = {
+  /**
+   * Modify Socket.io client configuration.
+   *
+   * See: https://socket.io/docs/v4/client-options/
+   */
+  '@flecks/socket.client': () => ({
+    timeout: Infinity,
+  }),
+  /**
+   * Define server-side intercom channels.
+   */
+  '@flecks/socket.intercom': (req) => ({
+    // This would have been called like:
+    // `const result = await req.intercom('someChannel', payload)`.
+    // `result` will be an `n`-length array, where `n` is the number of server instances. Each
+    // element in the array will be the result of `someServiceSpecificInformation()` running
+    // against that server instance.
+    someChannel: async (payload, server) => {
+      return someServiceSpecificInformation();
     },
+  }),
+  /**
+   * Define socket packets.
+   *
+   * In the example below, your fleck would have a `packets` subdirectory, and each
+   * decorator would be defined in its own file.
+   * See: https://github.com/cha0s/flecks/tree/master/packages/redux/src/packets
+   *
+   * See: https://github.com/cha0s/flecks/tree/master/packages/socket/src/packet/packet.js
+   * See: https://github.com/cha0s/flecks/tree/master/packages/socket/src/packet/redirect.js
+   */
+  '@flecks/socket.packets': Flecks.provide(require.context('./packets', false, /\.js$/)),
+  /**
+   * Decorate database models.
+   *
+   * In the example below, your fleck would have a `packets/decorators` subdirectory, and each
+   * decorator would be defined in its own file.
+   * @param {constructor} Packet The packet to decorate.
+   */
+  '@flecks/socket.packets.decorate': (
+    Flecks.decorate(require.context('./packets/decorators', false, /\.js$/))
+  ),
+
+  /**
+   * Modify Socket.io server configuration.
+   *
+   * See: https://socket.io/docs/v4/server-options/
+   */
+  '@flecks/socket.server': () => ({
+    pingTimeout: Infinity,
+  }),
+  /**
+   * Define middleware to run when a socket connection is established.
+   */
+  '@flecks/socket/server.request.socket': () => (socket, next) => {
+    // Express-style route middleware...
+    next();
   },
 };
 
diff --git a/packages/socket/src/client/index.js b/packages/socket/src/client/index.js
index 6b92626..db2f3b1 100644
--- a/packages/socket/src/client/index.js
+++ b/packages/socket/src/client/index.js
@@ -1,20 +1,16 @@
-import {Hooks} from '@flecks/core';
-
 import SocketClient from './socket';
 
-export default {
-  [Hooks]: {
-    '@flecks/web/client.up': (flecks) => {
-      const socket = new SocketClient(flecks);
-      flecks.set('$flecks/socket.socket', socket);
-      socket.connect();
-      socket.listen();
-    },
-    '@flecks/socket.client': ({config: {'@flecks/core': {id}}}) => ({
-      cors: {
-        origin: false,
-      },
-      path: `/${id}/socket.io`,
-    }),
+export const hooks = {
+  '@flecks/web/client.up': (flecks) => {
+    const socket = new SocketClient(flecks);
+    flecks.set('$flecks/socket.socket', socket);
+    socket.connect();
+    socket.listen();
   },
+  '@flecks/socket.client': ({config: {'@flecks/core': {id}}}) => ({
+    cors: {
+      origin: false,
+    },
+    path: `/${id}/socket.io`,
+  }),
 };
diff --git a/packages/socket/src/index.js b/packages/socket/src/index.js
index 0ead1f5..ca8f6a5 100644
--- a/packages/socket/src/index.js
+++ b/packages/socket/src/index.js
@@ -1,5 +1,3 @@
-import {Hooks} from '@flecks/core';
-
 import badPacketsCheck from './packet/bad-packets-check';
 import Bundle from './packet/bundle';
 import Redirect from './packet/redirect';
@@ -9,28 +7,26 @@ export {default as normalize} from './normalize';
 export * from './hooks';
 export {default as Packet, Packer, ValidationError} from './packet';
 
-export default {
-  [Hooks]: {
-    '@flecks/core.starting': (flecks) => {
-      flecks.set('$flecks/socket.packets', flecks.gather(
-        '@flecks/socket.packets',
-        {check: badPacketsCheck},
-      ));
-    },
-    '@flecks/web.config': async (
-      req,
-      {config: {'@flecks/socket': {'packets.decorate': decorators = ['...']}}},
-    ) => ({
-      '@flecks/socket': {
-        'packets.decorate': decorators.filter(
-          (decorator) => 'server' !== decorator.split('/').pop(),
-        ),
-      },
-    }),
-    '@flecks/socket.packets': (flecks) => ({
-      Bundle: Bundle(flecks),
-      Redirect,
-      Refresh,
-    }),
+export const hooks = {
+  '@flecks/core.starting': (flecks) => {
+    flecks.set('$flecks/socket.packets', flecks.gather(
+      '@flecks/socket.packets',
+      {check: badPacketsCheck},
+    ));
   },
+  '@flecks/web.config': async (
+    req,
+    {config: {'@flecks/socket': {'packets.decorate': decorators = ['...']}}},
+  ) => ({
+    '@flecks/socket': {
+      'packets.decorate': decorators.filter(
+        (decorator) => 'server' !== decorator.split('/').pop(),
+      ),
+    },
+  }),
+  '@flecks/socket.packets': (flecks) => ({
+    Bundle: Bundle(flecks),
+    Redirect,
+    Refresh,
+  }),
 };
diff --git a/packages/socket/src/server/index.js b/packages/socket/src/server/index.js
index 31065c0..13bfe7d 100644
--- a/packages/socket/src/server/index.js
+++ b/packages/socket/src/server/index.js
@@ -1,25 +1,21 @@
-import {Hooks} from '@flecks/core';
-
 import createIntercom from './create-intercom';
 import Sockets from './sockets';
 
-export default {
-  [Hooks]: {
-    '@flecks/web/server.request.socket': ({config: {'$flecks/socket.sockets': sockets}}) => (req, res, next) => {
-      req.intercom = createIntercom(sockets, 'web');
-      next();
-    },
-    '@flecks/web/server.up': async (httpServer, flecks) => {
-      const sockets = new Sockets(httpServer, flecks);
-      await sockets.connect();
-      flecks.set('$flecks/socket.sockets', sockets);
-    },
-    '@flecks/repl.context': (flecks) => ({
-      Packets: flecks.get('$flecks/socket.packets'),
-      sockets: flecks.get('$flecks/socket.sockets'),
-    }),
-    '@flecks/socket.server': ({config: {'@flecks/core': {id}}}) => ({
-      path: `/${id}/socket.io`,
-    }),
+export const hooks = {
+  '@flecks/web/server.request.socket': ({config: {'$flecks/socket.sockets': sockets}}) => (req, res, next) => {
+    req.intercom = createIntercom(sockets, 'web');
+    next();
   },
+  '@flecks/web/server.up': async (httpServer, flecks) => {
+    const sockets = new Sockets(httpServer, flecks);
+    await sockets.connect();
+    flecks.set('$flecks/socket.sockets', sockets);
+  },
+  '@flecks/repl.context': (flecks) => ({
+    Packets: flecks.get('$flecks/socket.packets'),
+    sockets: flecks.get('$flecks/socket.sockets'),
+  }),
+  '@flecks/socket.server': ({config: {'@flecks/core': {id}}}) => ({
+    path: `/${id}/socket.io`,
+  }),
 };
diff --git a/packages/user/build/dox/hooks.js b/packages/user/build/dox/hooks.js
index 6ccbe07..ef438c0 100644
--- a/packages/user/build/dox/hooks.js
+++ b/packages/user/build/dox/hooks.js
@@ -1,15 +1,10 @@
-import {Hooks} from '@flecks/core';
-
-export default {
-  [Hooks]: {
-    /**
-     * Modify express-session configuration.
-     *
-     * See: https://www.npmjs.com/package/express-session
-     */
-    '@flecks/user.session': () => ({
-      saveUninitialized: true,
-    }),
-  },
+export const hooks = {
+  /**
+   * Modify express-session configuration.
+   *
+   * See: https://www.npmjs.com/package/express-session
+   */
+  '@flecks/user.session': () => ({
+    saveUninitialized: true,
+  }),
 };
-
diff --git a/packages/user/src/index.js b/packages/user/src/index.js
index f15676c..38ba658 100644
--- a/packages/user/src/index.js
+++ b/packages/user/src/index.js
@@ -1,19 +1,15 @@
-import {Hooks} from '@flecks/core';
-
 import {Logout} from './packets';
 
 import {user, users} from './state';
 
 export * from './state';
 
-export default {
-  [Hooks]: {
-    '@flecks/redux.slices': () => ({
-      user,
-      users,
-    }),
-    '@flecks/socket.packets': (flecks) => ({
-      Logout: Logout(flecks),
-    }),
-  },
+export const hooks = {
+  '@flecks/redux.slices': () => ({
+    user,
+    users,
+  }),
+  '@flecks/socket.packets': (flecks) => ({
+    Logout: Logout(flecks),
+  }),
 };
diff --git a/packages/user/src/local/server/index.js b/packages/user/src/local/server/index.js
index 744bb32..a9bcf26 100644
--- a/packages/user/src/local/server/index.js
+++ b/packages/user/src/local/server/index.js
@@ -1,70 +1,68 @@
 import {randomBytes} from 'crypto';
 
-import {Flecks, Hooks} from '@flecks/core';
+import {Flecks} from '@flecks/core';
 import passport from 'passport';
 import LocalStrategy from 'passport-local';
 
-export default {
-  [Hooks]: {
-    '@flecks/core.config': () => ({
-      /**
-       * Path to redirect to after failed login.
-       */
-      failureRedirect: '/',
-      /**
-       * Path to redirect to after successful login.
-       */
-      successRedirect: '/',
-    }),
-    '@flecks/db/server.models.decorate': (
-      Flecks.decorate(require.context('./models/decorators', false, /\.js$/))
-    ),
-    '@flecks/web.routes': (flecks) => {
-      const {failureRedirect, successRedirect} = flecks.get('@flecks/user/local/server');
-      return [
-        {
-          method: 'post',
-          path: '/auth/local',
-          middleware: passport.authenticate('local', {failureRedirect, successRedirect}),
-        },
-      ];
-    },
-    '@flecks/repl.commands': (flecks) => {
-      const {User} = flecks.get('$flecks/db.models');
-      return {
-        createUser: async (spec) => {
-          const [email, maybePassword] = spec.split(' ', 2);
-          const password = maybePassword || randomBytes(8).toString('hex');
-          const user = User.build({email});
+export const hooks = {
+  '@flecks/core.config': () => ({
+    /**
+     * Path to redirect to after failed login.
+     */
+    failureRedirect: '/',
+    /**
+     * Path to redirect to after successful login.
+     */
+    successRedirect: '/',
+  }),
+  '@flecks/db/server.models.decorate': (
+    Flecks.decorate(require.context('./models/decorators', false, /\.js$/))
+  ),
+  '@flecks/web.routes': (flecks) => {
+    const {failureRedirect, successRedirect} = flecks.get('@flecks/user/local/server');
+    return [
+      {
+        method: 'post',
+        path: '/auth/local',
+        middleware: passport.authenticate('local', {failureRedirect, successRedirect}),
+      },
+    ];
+  },
+  '@flecks/repl.commands': (flecks) => {
+    const {User} = flecks.get('$flecks/db.models');
+    return {
+      createUser: async (spec) => {
+        const [email, maybePassword] = spec.split(' ', 2);
+        const password = maybePassword || randomBytes(8).toString('hex');
+        const user = User.build({email});
+        await user.addHashedPassword(password);
+        await user.save();
+      },
+      resetPassword: async (email) => {
+        const password = randomBytes(8).toString('hex');
+        const user = await User.findOne({where: {email}});
+        if (user) {
           await user.addHashedPassword(password);
           await user.save();
-        },
-        resetPassword: async (email) => {
-          const password = randomBytes(8).toString('hex');
+          return `\nNew password: ${password}\n\n`;
+        }
+        return 'User not found.\n';
+      },
+    };
+  },
+  '@flecks/server.up': (flecks) => {
+    passport.use(new LocalStrategy(
+      {usernameField: 'email'},
+      async (email, password, fn) => {
+        const {User} = flecks.get('$flecks/db.models');
+        try {
           const user = await User.findOne({where: {email}});
-          if (user) {
-            await user.addHashedPassword(password);
-            await user.save();
-            return `\nNew password: ${password}\n\n`;
-          }
-          return 'User not found.\n';
-        },
-      };
-    },
-    '@flecks/server.up': (flecks) => {
-      passport.use(new LocalStrategy(
-        {usernameField: 'email'},
-        async (email, password, fn) => {
-          const {User} = flecks.get('$flecks/db.models');
-          try {
-            const user = await User.findOne({where: {email}});
-            fn(undefined, user && await user.validatePassword(password) && user);
-          }
-          catch (error) {
-            fn(error);
-          }
-        },
-      ));
-    },
+          fn(undefined, user && await user.validatePassword(password) && user);
+        }
+        catch (error) {
+          fn(error);
+        }
+      },
+    ));
   },
 };
diff --git a/packages/user/src/server/index.js b/packages/user/src/server/index.js
index 00b3b34..d5d45e9 100644
--- a/packages/user/src/server/index.js
+++ b/packages/user/src/server/index.js
@@ -1,85 +1,83 @@
-import {D, Flecks, Hooks} from '@flecks/core';
+import {D, Flecks} from '@flecks/core';
 import passport from 'passport';
 import LogOps from 'passport/lib/http/request';
 
 const debug = D('@flecks/user/passport');
 const debugSilly = debug.extend('silly');
 
-export default {
-  [Hooks]: {
-    '@flecks/db/server.models': Flecks.provide(require.context('./models', false, /\.js$/)),
-    '@flecks/web/server.request.route': (flecks) => (req, res, next) => {
-      debugSilly('@flecks/web/server.request.route: passport.initialize()');
-      passport.initialize()(req, res, () => {
-        debugSilly('@flecks/web/server.request.route: passport.session()');
-        passport.session()(req, res, () => {
-          if (!req.user) {
-            const {User} = flecks.get('$flecks/db.models');
-            req.user = new User();
-            req.user.id = 0;
-          }
-          next();
-        });
-      });
-    },
-    '@flecks/web.routes': () => [
-      {
-        method: 'get',
-        path: '/auth/logout',
-        middleware: (req, res) => {
-          req.logout();
-          res.redirect('/');
-        },
-      },
-    ],
-    '@flecks/server.up': (flecks) => {
-      passport.serializeUser((user, fn) => fn(null, user.id));
-      passport.deserializeUser(async (id, fn) => {
-        const {User} = flecks.get('$flecks/db.models');
-        try {
-          fn(undefined, await User.findByPk(id));
-        }
-        catch (error) {
-          fn(error);
+export const hooks = {
+  '@flecks/db/server.models': Flecks.provide(require.context('./models', false, /\.js$/)),
+  '@flecks/web/server.request.route': (flecks) => (req, res, next) => {
+    debugSilly('@flecks/web/server.request.route: passport.initialize()');
+    passport.initialize()(req, res, () => {
+      debugSilly('@flecks/web/server.request.route: passport.session()');
+      passport.session()(req, res, () => {
+        if (!req.user) {
+          const {User} = flecks.get('$flecks/db.models');
+          req.user = new User();
+          req.user.id = 0;
         }
+        next();
       });
-    },
-    '@flecks/socket.intercom': () => ({
-      '@flecks/user/users': async (sids, server) => {
-        const sockets = await server.sockets();
-        return sids
-          .filter((sid) => sockets.has(sid))
-          .reduce(
-            (r, sid) => ({
-              ...r,
-              [sid]: sockets.get(sid).handshake.user.id,
-            }),
-            {},
-          );
+    });
+  },
+  '@flecks/web.routes': () => [
+    {
+      method: 'get',
+      path: '/auth/logout',
+      middleware: (req, res) => {
+        req.logout();
+        res.redirect('/');
       },
-    }),
-    '@flecks/socket/server.request.socket': (flecks) => (socket, next) => {
-      debugSilly('@flecks/socket/server.request.socket: passport.initialize()');
-      passport.initialize()(socket.handshake, undefined, () => {
-        debugSilly('@flecks/socket/server.request.socket: passport.session()');
-        passport.session()(socket.handshake, undefined, async () => {
-          /* eslint-disable no-param-reassign */
-          if (!socket.handshake.user) {
-            const {User} = flecks.get('$flecks/db.models');
-            socket.handshake.user = new User();
-            socket.handshake.user.id = 0;
-          }
-          socket.handshake.login = LogOps.logIn;
-          socket.handshake.logIn = LogOps.logIn;
-          socket.handshake.logout = LogOps.logOut;
-          socket.handshake.logOut = LogOps.logOut;
-          socket.handshake.isAuthenticated = LogOps.isAuthenticated;
-          socket.handshake.isUnauthenticated = LogOps.isUnauthenticated;
-          /* eslint-enable no-param-reassign */
-          await socket.join(`/u/${socket.handshake.user.id}`);
-          next();
-        });
-      });
     },
+  ],
+  '@flecks/server.up': (flecks) => {
+    passport.serializeUser((user, fn) => fn(null, user.id));
+    passport.deserializeUser(async (id, fn) => {
+      const {User} = flecks.get('$flecks/db.models');
+      try {
+        fn(undefined, await User.findByPk(id));
+      }
+      catch (error) {
+        fn(error);
+      }
+    });
+  },
+  '@flecks/socket.intercom': () => ({
+    '@flecks/user/users': async (sids, server) => {
+      const sockets = await server.sockets();
+      return sids
+        .filter((sid) => sockets.has(sid))
+        .reduce(
+          (r, sid) => ({
+            ...r,
+            [sid]: sockets.get(sid).handshake.user.id,
+          }),
+          {},
+        );
+    },
+  }),
+  '@flecks/socket/server.request.socket': (flecks) => (socket, next) => {
+    debugSilly('@flecks/socket/server.request.socket: passport.initialize()');
+    passport.initialize()(socket.handshake, undefined, () => {
+      debugSilly('@flecks/socket/server.request.socket: passport.session()');
+      passport.session()(socket.handshake, undefined, async () => {
+        /* eslint-disable no-param-reassign */
+        if (!socket.handshake.user) {
+          const {User} = flecks.get('$flecks/db.models');
+          socket.handshake.user = new User();
+          socket.handshake.user.id = 0;
+        }
+        socket.handshake.login = LogOps.logIn;
+        socket.handshake.logIn = LogOps.logIn;
+        socket.handshake.logout = LogOps.logOut;
+        socket.handshake.logOut = LogOps.logOut;
+        socket.handshake.isAuthenticated = LogOps.isAuthenticated;
+        socket.handshake.isUnauthenticated = LogOps.isUnauthenticated;
+        /* eslint-enable no-param-reassign */
+        await socket.join(`/u/${socket.handshake.user.id}`);
+        next();
+      });
+    });
   },
 };
diff --git a/packages/user/src/session/server.js b/packages/user/src/session/server.js
index 7443289..fea4442 100644
--- a/packages/user/src/session/server.js
+++ b/packages/user/src/session/server.js
@@ -1,59 +1,57 @@
-import {D, Hooks} from '@flecks/core';
+import {D} from '@flecks/core';
 import express from 'express';
 import expressSession from 'express-session';
 
 const debug = D('@flecks/user/session');
 const debugSilly = debug.extend('silly');
 
-export default {
-  [Hooks]: {
-    '@flecks/core.config': () => ({
-      /**
-       * Set the cookie secret for session encryption.
-       *
-       * See: http://expressjs.com/en/resources/middleware/cookie-parser.html
-       */
-      cookieSecret: (
-        'Set the FLECKS_ENV_FLECKS_USER_SESSION_SERVER_cookieSecret environment variable!'
-      ),
-    }),
-    '@flecks/web/server.request.route': (flecks) => {
-      const urle = express.urlencoded({extended: true});
-      return (req, res, next) => {
-        debugSilly('@flecks/web/server.request.route: express.urlencoded()');
-        urle(req, res, (error) => {
+export const hooks = {
+  '@flecks/core.config': () => ({
+    /**
+     * Set the cookie secret for session encryption.
+     *
+     * See: http://expressjs.com/en/resources/middleware/cookie-parser.html
+     */
+    cookieSecret: (
+      'Set the FLECKS_ENV_FLECKS_USER_SESSION_SERVER_cookieSecret environment variable!'
+    ),
+  }),
+  '@flecks/web/server.request.route': (flecks) => {
+    const urle = express.urlencoded({extended: true});
+    return (req, res, next) => {
+      debugSilly('@flecks/web/server.request.route: express.urlencoded()');
+      urle(req, res, (error) => {
+        if (error) {
+          next(error);
+          return;
+        }
+        debugSilly('@flecks/web/server.request.route: session()');
+        flecks.get('$flecks/user.session')(req, res, (error) => {
           if (error) {
             next(error);
             return;
           }
-          debugSilly('@flecks/web/server.request.route: session()');
-          flecks.get('$flecks/user.session')(req, res, (error) => {
-            if (error) {
-              next(error);
-              return;
-            }
-            debugSilly('session ID: %s', req.session.id);
-            next();
-          });
+          debugSilly('session ID: %s', req.session.id);
+          next();
         });
-      };
-    },
-    '@flecks/server.up': async (flecks) => {
-      flecks.set('$flecks/user.session', expressSession({
-        resave: false,
-        sameSite: true,
-        saveUninitialized: false,
-        secret: flecks.get('@flecks/user/session/server.cookieSecret'),
-        ...await flecks.invokeMergeAsync('@flecks/user.session'),
-      }));
-    },
-    '@flecks/socket/server.request.socket': (flecks) => (socket, next) => {
-      debugSilly('@flecks/socket/server.request.socket: session()');
-      flecks.get('$flecks/user.session')(socket.handshake, {}, () => {
-        const id = socket.handshake.session?.id;
-        socket.join(id);
-        next();
       });
-    },
+    };
+  },
+  '@flecks/server.up': async (flecks) => {
+    flecks.set('$flecks/user.session', expressSession({
+      resave: false,
+      sameSite: true,
+      saveUninitialized: false,
+      secret: flecks.get('@flecks/user/session/server.cookieSecret'),
+      ...await flecks.invokeMergeAsync('@flecks/user.session'),
+    }));
+  },
+  '@flecks/socket/server.request.socket': (flecks) => (socket, next) => {
+    debugSilly('@flecks/socket/server.request.socket: session()');
+    flecks.get('$flecks/user.session')(socket.handshake, {}, () => {
+      const id = socket.handshake.session?.id;
+      socket.join(id);
+      next();
+    });
   },
 };
diff --git a/packages/web/build/dox/hooks.js b/packages/web/build/dox/hooks.js
index c16dfa6..ece001a 100644
--- a/packages/web/build/dox/hooks.js
+++ b/packages/web/build/dox/hooks.js
@@ -1,62 +1,58 @@
-import {Hooks} from '@flecks/core';
-
-export default {
-  [Hooks]: {
-    /**
-     * Define sequential actions to run when the client comes up.
-     */
-    '@flecks/web/client.up': async () => {
-      await youCanDoAsyncThingsHere();
+export const hooks = {
+  /**
+   * Define sequential actions to run when the client comes up.
+   */
+  '@flecks/web/client.up': async () => {
+    await youCanDoAsyncThingsHere();
+  },
+  /**
+   * Override flecks configuration sent to client flecks.
+   * @param {http.ClientRequest} req The HTTP request object.
+   */
+  '@flecks/web.config': (req) => ({
+    someClientFleck: {
+      someConfig: req.someConfig,
     },
-    /**
-     * Override flecks configuration sent to client flecks.
-     * @param {http.ClientRequest} req The HTTP request object.
-     */
-    '@flecks/web.config': (req) => ({
-      someClientFleck: {
-        someConfig: req.someConfig,
+  }),
+  /**
+   * Define HTTP routes.
+   */
+  '@flecks/web.routes': () => [
+    {
+      method: 'get',
+      path: '/some-path',
+      middleware: (req, res, next) => {
+        // Express-style route middleware...
+        next();
       },
-    }),
-    /**
-     * Define HTTP routes.
-     */
-    '@flecks/web.routes': () => [
-      {
-        method: 'get',
-        path: '/some-path',
-        middleware: (req, res, next) => {
-          // Express-style route middleware...
-          next();
-        },
-      },
-    ],
-    /**
-     * Define middleware to run when a route is matched.
-     */
-    '@flecks/web/server.request.route': () => (req, res, next) => {
-      // Express-style route middleware...
-      next();
-    },
-    /**
-     * Define middleware to run when an HTTP socket connection is established.
-     */
-    '@flecks/web/server.request.socket': () => (req, res, next) => {
-      // Express-style route middleware...
-      next();
-    },
-    /**
-     * Define composition functions to run over the HTML stream prepared for the client.
-     * @param {stream.Readable} stream The HTML stream.
-     * @param {http.ClientRequest} req The HTTP request object.
-     */
-    '@flecks/web/server.stream.html': (stream, req) => {
-      return stream.pipe(myTransformStream);
-    },
-    /**
-     * Define sequential actions to run when the HTTP server comes up.
-     */
-    '@flecks/web/server.up': async () => {
-      await youCanDoAsyncThingsHere();
     },
+  ],
+  /**
+   * Define middleware to run when a route is matched.
+   */
+  '@flecks/web/server.request.route': () => (req, res, next) => {
+    // Express-style route middleware...
+    next();
+  },
+  /**
+   * Define middleware to run when an HTTP socket connection is established.
+   */
+  '@flecks/web/server.request.socket': () => (req, res, next) => {
+    // Express-style route middleware...
+    next();
+  },
+  /**
+   * Define composition functions to run over the HTML stream prepared for the client.
+   * @param {stream.Readable} stream The HTML stream.
+   * @param {http.ClientRequest} req The HTTP request object.
+   */
+  '@flecks/web/server.stream.html': (stream, req) => {
+    return stream.pipe(myTransformStream);
+  },
+  /**
+   * Define sequential actions to run when the HTTP server comes up.
+   */
+  '@flecks/web/server.up': async () => {
+    await youCanDoAsyncThingsHere();
   },
 };
diff --git a/packages/web/src/server/build/entry.js b/packages/web/src/server/build/entry.js
index 085a7fb..61748a9 100644
--- a/packages/web/src/server/build/entry.js
+++ b/packages/web/src/server/build/entry.js
@@ -1,6 +1,6 @@
 import {D, Flecks} from '@flecks/core';
 
-// eslint-disable-next-line import/no-extraneous-dependencies
+// eslint-disable-next-line import/no-extraneous-dependencies, import/no-unresolved
 const {version} = require('@flecks/web/package.json');
 
 (async () => {
@@ -56,7 +56,8 @@ const {version} = require('@flecks/web/package.json');
   const flecks = new Flecks(runtime);
   window.flecks = flecks;
   try {
-    await flecks.up('@flecks/web/client.up');
+    await Promise.all(flecks.invokeFlat('@flecks/core.starting'));
+    await flecks.invokeSequentialAsync('@flecks/web/client.up');
     window.document.querySelector('#root').style.display = 'block';
     debug('up!');
   }
diff --git a/packages/web/src/server/index.js b/packages/web/src/server/index.js
index 9823061..6509a0e 100644
--- a/packages/web/src/server/index.js
+++ b/packages/web/src/server/index.js
@@ -1,7 +1,7 @@
 import {stat, unlink} from 'fs/promises';
 import {join} from 'path';
 
-import {D, Hooks} from '@flecks/core';
+import {D} from '@flecks/core';
 import {Flecks, spawnWith} from '@flecks/core/server';
 
 import augmentBuild from './augment-build';
@@ -16,199 +16,197 @@ const debug = D('@flecks/web/server');
 
 export {augmentBuild};
 
-export default {
-  [Hooks]: {
-    '@flecks/core.build': augmentBuild,
-    '@flecks/core.build.alter': async (neutrinoConfigs, flecks) => {
-      // Don't build if there's a fleck target.
-      if (neutrinoConfigs.fleck && !flecks.get('@flecks/web/server.forceBuildWithFleck')) {
+export const hooks = {
+  '@flecks/core.build': augmentBuild,
+  '@flecks/core.build.alter': async (neutrinoConfigs, flecks) => {
+    // Don't build if there's a fleck target.
+    if (neutrinoConfigs.fleck && !flecks.get('@flecks/web/server.forceBuildWithFleck')) {
+      // eslint-disable-next-line no-param-reassign
+      delete neutrinoConfigs.web;
+      return;
+    }
+    // Only build vendor in dev.
+    if (neutrinoConfigs['web-vendor']) {
+      if (process.argv.find((arg) => 'production' === arg)) {
         // eslint-disable-next-line no-param-reassign
-        delete neutrinoConfigs.web;
-        return;
+        delete neutrinoConfigs['web-vendor'];
       }
-      // Only build vendor in dev.
-      if (neutrinoConfigs['web-vendor']) {
-        if (process.argv.find((arg) => 'production' === arg)) {
-          // eslint-disable-next-line no-param-reassign
-          delete neutrinoConfigs['web-vendor'];
+      // Only build if something actually changed.
+      const dll = flecks.get('@flecks/web/server.dll');
+      if (dll.length > 0) {
+        const manifest = join(
+          FLECKS_CORE_ROOT,
+          'node_modules',
+          '.cache',
+          'flecks',
+          'web-vendor.manifest.json',
+        );
+        let timestamp = 0;
+        try {
+          const stats = await stat(manifest);
+          timestamp = stats.mtime;
         }
-        // Only build if something actually changed.
-        const dll = flecks.get('@flecks/web/server.dll');
-        if (dll.length > 0) {
-          const manifest = join(
-            FLECKS_CORE_ROOT,
-            'node_modules',
-            '.cache',
-            'flecks',
-            'web-vendor.manifest.json',
-          );
-          let timestamp = 0;
+        // eslint-disable-next-line no-empty
+        catch (error) {}
+        let latest = 0;
+        for (let i = 0; i < dll.length; ++i) {
+          const path = dll[i];
           try {
-            const stats = await stat(manifest);
-            timestamp = stats.mtime;
+            // eslint-disable-next-line no-await-in-loop
+            const stats = await stat(join(FLECKS_CORE_ROOT, 'node_modules', path));
+            if (stats.mtime > latest) {
+              latest = stats.mtime;
+            }
           }
           // eslint-disable-next-line no-empty
           catch (error) {}
-          let latest = 0;
-          for (let i = 0; i < dll.length; ++i) {
-            const path = dll[i];
-            try {
-              // eslint-disable-next-line no-await-in-loop
-              const stats = await stat(join(FLECKS_CORE_ROOT, 'node_modules', path));
-              if (stats.mtime > latest) {
-                latest = stats.mtime;
-              }
-            }
-            // eslint-disable-next-line no-empty
-            catch (error) {}
-          }
-          if (timestamp > latest) {
-            // eslint-disable-next-line no-param-reassign
-            delete neutrinoConfigs['web-vendor'];
-          }
-          else if (timestamp > 0) {
-            await unlink(manifest);
-          }
+        }
+        if (timestamp > latest) {
+          // eslint-disable-next-line no-param-reassign
+          delete neutrinoConfigs['web-vendor'];
+        }
+        else if (timestamp > 0) {
+          await unlink(manifest);
         }
       }
-      // Bail if there's no web build.
-      if (!neutrinoConfigs.web) {
-        return;
-      }
-      // Bail if the build isn't watching.
-      if (!process.argv.find((arg) => '--watch' === arg)) {
-        return;
-      }
-      // Otherwise, spawn `webpack-dev-server` (WDS).
-      const cmd = [
-        'npx', 'webpack-dev-server',
-        '--mode', 'development',
-        '--hot',
-        '--config', flecks.buildConfig('webpack.config.js'),
-      ];
-      spawnWith(
-        cmd,
-        {
-          env: {
-            FLECKS_CORE_BUILD_LIST: 'web',
-          },
-        },
-      );
-      // Remove the build config since we're handing off to WDS.
-      // eslint-disable-next-line no-param-reassign
-      delete neutrinoConfigs.web;
-    },
-    '@flecks/core.build.config': () => [
-      /**
-       * Template file used to generate the client HTML.
-       *
-       * See: https://github.com/jantimon/html-webpack-plugin/blob/main/docs/template-option.md
-       */
-      'template.ejs',
-      /**
-       * PostCSS config file.
-       *
-       * See: https://github.com/postcss/postcss#usage
-       */
-      'postcss.config.js',
-    ],
-    '@flecks/core.config': () => ({
-      /**
-       * (webpack-dev-server) Disable the host check.
-       *
-       * See: https://github.com/webpack/webpack-dev-server/issues/887
-       */
-      devDisableHostCheck: false,
-      /**
-       * (webpack-dev-server) Host to bind.
-       */
-      devHost: 'localhost',
-      /**
-       * (webpack-dev-server) Port to bind.
-       */
-      devPort: undefined,
-      /**
-       * (webpack-dev-server) Public path to serve.
-       *
-       * Defaults to `flecks.get('@flecks/web/server.public')`.
-       */
-      devPublic: undefined,
-      /**
-       * (webpack-dev-server) Webpack stats output.
-       */
-      devStats: {
-        assets: false,
-        chunks: false,
-        colors: true,
-        modules: false,
-      },
-      /**
-       * Modules to externalize using `webpack.DllPlugin`.
-       */
-      dll: [],
-      /**
-       * Force building http target even if there's a fleck target.
-       */
-      forceBuildWithFleck: false,
-      /**
-       * Host to bind.
-       */
-      host: '0.0.0.0',
-      /**
-       * Build path.
-       */
-      output: 'web',
-      /**
-       * Port to bind.
-       */
-      port: 32340,
-      /**
-       * Public path to server.
-       */
-      public: 'localhost:32340',
-      /**
-       * Webpack stats configuration when building HTTP target.
-       */
-      stats: {
-        children: false,
-        chunks: false,
-        colors: true,
-        modules: false,
-      },
-      /**
-       * Proxies to trust.
-       *
-       * See: https://www.npmjs.com/package/proxy-addr
-       */
-      trust: false,
-    }),
-    '@flecks/core.starting': (flecks) => {
-      debug('bootstrapping flecks...');
-      const webFlecks = Flecks.bootstrap({
-        config: flecks.config,
-        platforms: ['client', '!server'],
-      });
-      debug('bootstrapped');
-      flecks.set('$flecks/web.flecks', webFlecks);
-    },
-    '@flecks/core.targets': (flecks) => [
-      'web',
-      ...(flecks.get('@flecks/web/server.dll').length > 0 ? ['web-vendor'] : []),
-    ],
-    '@flecks/web.routes': (flecks) => [
+    }
+    // Bail if there's no web build.
+    if (!neutrinoConfigs.web) {
+      return;
+    }
+    // Bail if the build isn't watching.
+    if (!process.argv.find((arg) => '--watch' === arg)) {
+      return;
+    }
+    // Otherwise, spawn `webpack-dev-server` (WDS).
+    const cmd = [
+      'npx', 'webpack-dev-server',
+      '--mode', 'development',
+      '--hot',
+      '--config', flecks.buildConfig('webpack.config.js'),
+    ];
+    spawnWith(
+      cmd,
       {
-        method: 'get',
-        path: '/flecks.config.js',
-        middleware: async (req, res) => {
-          res.setHeader('Content-Type', 'application/javascript; charset=UTF-8');
-          res.send(await configSource(flecks, req));
+        env: {
+          FLECKS_CORE_BUILD_LIST: 'web',
         },
       },
-    ],
-    '@flecks/web/server.stream.html': inlineConfig,
-    '@flecks/server.up': (flecks) => createHttpServer(flecks),
-    '@flecks/repl.context': (flecks) => ({
-      httpServer: flecks.get('$flecks/web/server.instance'),
-    }),
+    );
+    // Remove the build config since we're handing off to WDS.
+    // eslint-disable-next-line no-param-reassign
+    delete neutrinoConfigs.web;
   },
+  '@flecks/core.build.config': () => [
+    /**
+     * Template file used to generate the client HTML.
+     *
+     * See: https://github.com/jantimon/html-webpack-plugin/blob/main/docs/template-option.md
+     */
+    'template.ejs',
+    /**
+     * PostCSS config file.
+     *
+     * See: https://github.com/postcss/postcss#usage
+     */
+    'postcss.config.js',
+  ],
+  '@flecks/core.config': () => ({
+    /**
+     * (webpack-dev-server) Disable the host check.
+     *
+     * See: https://github.com/webpack/webpack-dev-server/issues/887
+     */
+    devDisableHostCheck: false,
+    /**
+     * (webpack-dev-server) Host to bind.
+     */
+    devHost: 'localhost',
+    /**
+     * (webpack-dev-server) Port to bind.
+     */
+    devPort: undefined,
+    /**
+     * (webpack-dev-server) Public path to serve.
+     *
+     * Defaults to `flecks.get('@flecks/web/server.public')`.
+     */
+    devPublic: undefined,
+    /**
+     * (webpack-dev-server) Webpack stats output.
+     */
+    devStats: {
+      assets: false,
+      chunks: false,
+      colors: true,
+      modules: false,
+    },
+    /**
+     * Modules to externalize using `webpack.DllPlugin`.
+     */
+    dll: [],
+    /**
+     * Force building http target even if there's a fleck target.
+     */
+    forceBuildWithFleck: false,
+    /**
+     * Host to bind.
+     */
+    host: '0.0.0.0',
+    /**
+     * Build path.
+     */
+    output: 'web',
+    /**
+     * Port to bind.
+     */
+    port: 32340,
+    /**
+     * Public path to server.
+     */
+    public: 'localhost:32340',
+    /**
+     * Webpack stats configuration when building HTTP target.
+     */
+    stats: {
+      children: false,
+      chunks: false,
+      colors: true,
+      modules: false,
+    },
+    /**
+     * Proxies to trust.
+     *
+     * See: https://www.npmjs.com/package/proxy-addr
+     */
+    trust: false,
+  }),
+  '@flecks/core.starting': (flecks) => {
+    debug('bootstrapping flecks...');
+    const webFlecks = Flecks.bootstrap({
+      config: flecks.config,
+      platforms: ['client', '!server'],
+    });
+    debug('bootstrapped');
+    flecks.set('$flecks/web.flecks', webFlecks);
+  },
+  '@flecks/core.targets': (flecks) => [
+    'web',
+    ...(flecks.get('@flecks/web/server.dll').length > 0 ? ['web-vendor'] : []),
+  ],
+  '@flecks/web.routes': (flecks) => [
+    {
+      method: 'get',
+      path: '/flecks.config.js',
+      middleware: async (req, res) => {
+        res.setHeader('Content-Type', 'application/javascript; charset=UTF-8');
+        res.send(await configSource(flecks, req));
+      },
+    },
+  ],
+  '@flecks/web/server.stream.html': inlineConfig,
+  '@flecks/server.up': (flecks) => createHttpServer(flecks),
+  '@flecks/repl.context': (flecks) => ({
+    httpServer: flecks.get('$flecks/web/server.instance'),
+  }),
 };