refactor: Behavior items derive type/name

TODO.md

@@ -2,7 +2,7 @@
 
 - ✔ Remove dependency on decorators
 - ✔ Synchronized should be a mixin
-- ❌ Behavior items should derive type/name
+- ✔ Behavior items should derive type/name
 - ✔ Precompile behavior traversals
 - ❌ Abstract physics world tick (no destructuring)
 - ❌ Cache current routine for Behaved tick

packages/behavior/item/action.js

@@ -2,10 +2,6 @@ import {Traversal} from './traversal';
 
 export class Action extends Traversal {
 
-  static type() {
-    return 'action';
-  }
-
   toJSON() {
     return {
       ...super.toJSON(),

packages/behavior/item/actions.js

@@ -10,10 +10,6 @@ const decorate = compose(
 
 export class Actions extends decorate(Traversals) {
 
-  static type() {
-    return 'actions';
-  }
-
   constructor() {
     super();
     this._index = 0;

packages/behavior/item/collection.js

@@ -4,10 +4,6 @@ export function Collection(type) {
   const plural = `${type}s`;
   return class Collection {
 
-    static type() {
-      return plural;
-    }
-
     constructor() {
       this[plural] = [];
     }

packages/behavior/item/condition.js

@@ -2,10 +2,6 @@ import {fromJSON as behaviorItemFromJSON} from './registry';
 
 export class Condition {
 
-  static type() {
-    return 'condition';
-  }
-
   constructor() {
     this.operator = '';
     this.operands = [];

packages/behavior/item/literal.js

@@ -1,9 +1,5 @@
 export class Literal {
 
-  static type() {
-    return 'literal';
-  }
-
   constructor() {
     this.value = null;
   }

packages/behavior/item/registry.js

@@ -13,5 +13,10 @@ export function deregister(BehaviorItem) {
 }
 
 export function register(BehaviorItem) {
+  if (!BehaviorItem.type) {
+    BehaviorItem.type = function() {
+      return BehaviorItem.name.toLowerCase();
+    }
+  }
   behaviorItemRegistry.set(BehaviorItem.type(), BehaviorItem);
 }

packages/behavior/item/routine.js

@@ -2,10 +2,6 @@ import {Actions} from './actions';
 
 export class Routine {
 
-  static type() {
-    return 'routine';
-  }
-
   constructor() {
     this._context = undefined;
     this.actions = new Actions();

packages/behavior/item/routines.js

@@ -2,10 +2,6 @@ import {Routine} from './routine';
 
 export class Routines {
 
-  static type() {
-    return 'routines';
-  }
-
   constructor() {
     this._context = undefined;
     this.routines = {};

packages/behavior/item/traversal.js

@@ -2,10 +2,6 @@ import {fromJSON as behaviorItemFromJSON} from './registry';
 
 export class Traversal {
 
-  static type() {
-    return 'traversal';
-  }
-
   constructor() {
     this.hash = undefined;
     this.steps = [];