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feat: dynamic-require rollup plugin
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packages/nitro/src/dynamic-require.ts
Normal file
46
packages/nitro/src/dynamic-require.ts
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@ -0,0 +1,46 @@
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import { resolve } from 'path'
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import globby, { GlobbyOptions } from 'globby'
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const PLUGIN_NAME = 'dynamic-require'
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const HELPER_DYNAMIC = `\0${PLUGIN_NAME}.js`
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const DYNAMIC_REQUIRE_RE = /require\("\.\/" \+/g
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function CJSTemplate ({ imports }) {
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return `${imports.map(i => `import ${i.name} from '${i.import}'`).join('\n')}
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const dynamicChunks = {
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${imports.map(i => ` ['${i.id}']: ${i.name}`).join(',\n')}
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};
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export default function dynamicRequire(id) {
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return dynamicChunks[id];
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};`
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}
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interface Options {
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dir: string,
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globbyOptions: GlobbyOptions
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}
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export default function dynamicRequire ({ dir, globbyOptions }: Options) {
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return {
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name: PLUGIN_NAME,
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transform (code, _id) {
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return code.replace(DYNAMIC_REQUIRE_RE, `require('${HELPER_DYNAMIC}')(`)
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},
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resolveId (id) {
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return id === HELPER_DYNAMIC ? id : null
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},
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async load (id) {
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if (id === HELPER_DYNAMIC) {
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const files = await globby('**/*.js', { cwd: dir, absolute: false, ...globbyOptions })
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const imports = files.map(id => ({
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id,
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import: resolve(dir, id),
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name: id.replace(/[\\/.]/g, '_')
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}))
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return CJSTemplate({ imports })
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}
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return null
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}
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}
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}
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@ -1,44 +0,0 @@
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import { join } from 'path'
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import globby from 'globby'
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export async function createDynamicImporter (cwd: string) {
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const assets = await globby('**/*.js', { cwd, absolute: false })
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const chunkInfo = {}
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for (const asset of assets) {
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const { id, ids, modules } = require(join(cwd, asset))
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if ((id || ids) && modules) {
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chunkInfo[asset] = { id, ids, modules: Object.keys(modules) }
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}
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}
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return (syncImport, asyncImport) => genRequireDynamic(chunkInfo, syncImport, asyncImport)
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}
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export function genRequireDynamic (chunkInfo, syncImport, asyncImport) {
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return `\nconst _dynamic_chunks = ${JSON.stringify(chunkInfo, null, 2)};
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function requireDynamic (chunkId) {
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const chunk = _dynamic_chunks[chunkId]
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if (!chunk) {
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return ${syncImport}
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}
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const promise = ${asyncImport}
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if (Array.isArray(chunk.modules)) {
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const modules = {}
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for (const id of chunk.modules) {
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modules[id] = function (module, _exports, _require) {
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module.exports = promise.then(chunk => {
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const asyncModule = { exports: {}, require: _require }
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chunk.modules[id](asyncModule, asyncModule.exports, asyncModule.require)
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return asyncModule.exports
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})
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}
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}
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chunk.modules = modules
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}
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return chunk
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};`
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}
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@ -9,7 +9,6 @@ import gzipSize from 'gzip-size'
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import chalk from 'chalk'
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import { getRollupConfig } from './rollup.config'
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import { tryImport, hl, prettyPath } from './utils'
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import { createDynamicImporter } from './dynamic'
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async function main () {
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const rootDir = resolve(process.cwd(), process.argv[2] || '.')
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@ -20,8 +19,6 @@ async function main () {
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buildDir: '',
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targets: [],
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nuxt: 2,
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importSync: "require('../server/' + chunkId)",
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importAsync: "Promise.resolve(require('../server/' + chunkId))",
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target: process.argv[3] && process.argv[3][0] !== '-' ? process.argv[3] : null,
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minify: process.argv.includes('--minify') ? true : null,
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analyze: process.argv.includes('--analyze') ? true : null,
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@ -49,10 +46,6 @@ async function main () {
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await writeFile(htmlTemplateFileJS, htmlTemplateCompiled)
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consola.info('Generated', prettyPath(htmlTemplateFileJS))
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// Collect dynamic chunks
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consola.info('Collecting dynamic chunks...')
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const dynamicImporter = await createDynamicImporter(resolve(config.buildDir, 'dist/server'))
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// Bundle for each target
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for (let target of config.targets) {
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if (typeof target === 'string') {
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@ -69,8 +62,7 @@ async function main () {
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const ctx: any = defu(
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target,
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config,
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tryImport(__dirname, `./targets/${target.target}`) || tryImport(config.rootDir, target.target),
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{ dynamicImporter }
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tryImport(__dirname, `./targets/${target.target}`) || tryImport(config.rootDir, target.target)
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)
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const hooks = new Hookable()
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@ -9,6 +9,7 @@ import json from '@rollup/plugin-json'
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import replace from '@rollup/plugin-replace'
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import analyze from 'rollup-plugin-analyzer'
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import ts from 'rollup-plugin-ts'
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import dynamicRequire from './dynamic-require'
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export type RollupConfig = InputOptions & { output: OutputOptions }
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@ -66,13 +67,15 @@ export const getRollupConfig = (config) => {
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}
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}))
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// Dynamic Importer
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if (config.dynamicImporter) {
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options.output.intro += config.dynamicImporter(config.importSync, config.importAsync)
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} else {
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options.output.intro += `const requireDynamic = (chunkId) => ${config.importSync}`
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}
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options.plugins.push(replace({ values: { 'require("./" +': 'requireDynamic(' }, delimiters: ['', ''] }))
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// Dynamic Require Support
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options.plugins.push(dynamicRequire({
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dir: path.resolve(config.buildDir, 'dist/server'),
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globbyOptions: {
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ignore: [
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'server.js'
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]
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}
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}))
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// https://github.com/rollup/plugins/tree/master/packages/alias
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options.plugins.push(alias({
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