112 lines
3.6 KiB
JavaScript
112 lines
3.6 KiB
JavaScript
const {externals} = require('@flecks/build/server');
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module.exports = async (config, env, argv, flecks) => {
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const runtimePath = await flecks.resolver.resolve('@flecks/server/runtime');
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// Inject flecks configuration.
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const paths = Object.keys(flecks.flecks);
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const resolvedPaths = (await Promise.all(
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paths.map(async (path) => [path, await flecks.resolver.resolve(path)]),
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))
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.filter(([, resolved]) => resolved)
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.map(([path]) => path);
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const runtime = {
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config: JSON.stringify(flecks.config),
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loadFlecks: [
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'async () => (',
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' Object.fromEntries(',
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' (await Promise.all(',
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' [',
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...resolvedPaths.map((path) => [
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' (async () => {',
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' try {',
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` return ['${path}', await import('${path}')];`,
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' }',
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' catch (error) {',
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' if (!error.message.startsWith("Cannot find module")) {',
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' throw error;',
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' }',
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' }',
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' })(),',
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]).flat(),
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' ],',
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' ))',
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' .filter((entry) => entry),',
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' )',
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')',
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].join('\n'),
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stubs: (
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JSON.stringify(flecks.stubs.map((stub) => (
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stub instanceof RegExp ? [stub.source, stub.flags] : stub
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)))
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),
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...await flecks.invokeAsync('@flecks/server.runtime'),
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};
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const runtimeString = `{${
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Object.entries(runtime)
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.map(([key, value]) => `"${key}": ${value}`).join(', ')
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}}`;
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const source = [
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"process.env.FLECKS_CORE_BUILD_TARGET = 'server';",
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`module.exports = (async () => (${runtimeString}))();`,
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];
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// HMR.
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source.push('if (module.hot) {');
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// Keep HMR junk out of our output path.
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source.push(' const {unlink} = require("fs/promises");');
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source.push(' const {join} = require("path");');
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source.push(' let previousHash = __webpack_hash__;');
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source.push(' module.hot.addStatusHandler((status) => {');
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source.push(' if ("idle" === status) {');
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source.push(' require("glob")(');
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source.push(` join('${config.output.path}', \`*\${previousHash}.hot-update.*\`),`);
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source.push(' async (error, disposing) => {');
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source.push(' if (error) {');
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source.push(' throw error;');
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source.push(' return;');
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source.push(' }');
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source.push(' await Promise.all(disposing.map(unlink));');
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source.push(' },');
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source.push(' );');
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source.push(' previousHash = __webpack_hash__;');
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source.push(' }');
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source.push(' });');
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// Hooks for each fleck.
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resolvedPaths.forEach((path) => {
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source.push(` module.hot.accept('${path}', async () => {`);
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source.push(` global.flecks.refresh('${path}', require('${path}'));`);
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source.push(` global.flecks.invoke('@flecks/core.hmr', '${path}');`);
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source.push(' });');
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});
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source.push('}');
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// Create runtime.
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config.module.rules.push(
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{
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test: runtimePath,
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use: [
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{
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loader: runtimePath,
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options: {
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source: source.join('\n'),
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},
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},
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],
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},
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);
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const allowlist = [
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'@flecks/server/entry',
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'@flecks/server/runtime',
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/^@babel\/runtime\/helpers\/esm/,
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];
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config.resolve.alias['@flecks/server/runtime$'] = runtimePath;
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const nodeExternalsConfig = {
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allowlist,
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};
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await flecks.runtimeCompiler('server', config, nodeExternalsConfig);
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// Rewrite to signals for HMR.
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if ('production' !== argv.mode) {
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allowlist.push(/^webpack\/hot\/signal/);
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}
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// Externalize the rest.
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config.externals = externals(nodeExternalsConfig);
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};
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