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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1,2 @@ | ||
| .nvmrc | ||
| .nvmrc | ||
| dist/**/_internal/*.d.ts |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| // @ts-check | ||
|
|
||
| import tsPlugin from '@rollup/plugin-typescript'; | ||
| import { globSync } from 'glob'; | ||
| import path from 'node:path'; | ||
|
|
||
| /** | ||
| * @param {'es' | 'cjs'} format Rollup output format | ||
| * @returns {import('rollup').RollupOptions} Rollup config for a ESM or CJS build | ||
| */ | ||
| function buildConfig(format) { | ||
| const isESM = format === 'es'; | ||
| const jsExtension = format === 'es' ? 'mjs' : 'js'; | ||
|
|
||
| return { | ||
| // For ESM, we transpile all the original modules like tsc would do. | ||
| // For CJS, only treat the package.json#exports paths as entrypoints, | ||
| // resulting in one bundle per category (array, object, etc.), | ||
| // plus one index requiring those bundles. | ||
| input: getInputs( | ||
| isESM | ||
| ? ['src/**/*.ts'] | ||
| : ['src/index.ts', 'src/{array,compat,function,math,object,predicate,promise,string}/index.ts'] | ||
| ), | ||
| plugins: [ | ||
| tsPlugin({ | ||
| sourceMap: true, | ||
| inlineSources: true, | ||
| declaration: isESM, | ||
| declarationDir: isESM ? 'dist' : undefined, | ||
| }), | ||
| ], | ||
| output: { | ||
| format, | ||
| dir: 'dist', | ||
| chunkFileNames: `_chunk/[name]-[hash:6].${jsExtension}`, | ||
| entryFileNames: `[name].${jsExtension}`, | ||
| // Using preserveModules virtually disables extracting common chunks, | ||
| // leading to a result that is a mirror of the TypeScript source. | ||
| preserveModules: isESM, | ||
| manualChunks: isESM | ||
| ? undefined | ||
| : id => { | ||
| if (id.includes('/_internal/')) { | ||
| const fragments = id.split('/'); | ||
| const parent = fragments.at(fragments.indexOf('_internal') - 1); | ||
| return parent ? `${parent}-internal` : 'internal'; | ||
| } | ||
| }, | ||
| sourcemap: true, | ||
| generatedCode: 'es2015', | ||
| // Hoisting transitive imports adds bare imports in modules, | ||
| // which can make imports by JS runtimes slightly faster, | ||
| // but makes the generated code harder to follow. | ||
| hoistTransitiveImports: false, | ||
| }, | ||
| }; | ||
| } | ||
|
|
||
| /** | ||
| * @type {(pattern: Parameters<typeof globSync>[0]) => Record<string, string>} | ||
| */ | ||
| function getInputs(pattern = '') { | ||
| const files = globSync(pattern, { | ||
| ignore: ['**/_internal/*', '**/*.types.ts', '**/*.{bench,spec,test}.ts'], | ||
| }); | ||
|
|
||
| return Object.fromEntries( | ||
| files.map(file => [ | ||
| // chunk name is path without src/ or extension | ||
| file.replace(/^src\//, '').replace(/\.[cm]?(js|ts)$/, ''), | ||
| path.join(import.meta.dirname, file), | ||
| ]) | ||
| ); | ||
| } | ||
|
|
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| export default [buildConfig('es'), buildConfig('cjs')]; |
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