128 lines
4.3 KiB
TypeScript
128 lines
4.3 KiB
TypeScript
/**
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* Bundles the widgets library, which is released independently of the interface application.
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* This library lives in src/lib, but shares code with the interface application.
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*/
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import alias from '@rollup/plugin-alias'
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import babel from '@rollup/plugin-babel'
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import commonjs from '@rollup/plugin-commonjs'
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import json from '@rollup/plugin-json'
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import resolve from '@rollup/plugin-node-resolve'
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import replace from '@rollup/plugin-replace'
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import typescript from '@rollup/plugin-typescript'
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import url from '@rollup/plugin-url'
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import svgr from '@svgr/rollup'
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import path from 'path'
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import { RollupWarning } from 'rollup'
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import copy from 'rollup-plugin-copy'
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import del from 'rollup-plugin-delete'
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import dts from 'rollup-plugin-dts'
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import externals from 'rollup-plugin-node-externals'
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import sass from 'rollup-plugin-scss'
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import { CompilerOptions } from 'typescript'
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const REPLACEMENTS = {
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'process.env.REACT_APP_IS_WIDGET': true,
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'process.env.REACT_APP_LOCALES': "'./locales'",
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}
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const EXTENSIONS = ['.js', '.jsx', '.ts', '.tsx']
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const ASSET_EXTENSIONS = ['.png', '.svg']
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function isAsset(source: string) {
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const extname = path.extname(source)
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return extname && [...ASSET_EXTENSIONS, '.css', '.scss'].includes(extname)
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}
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const TS_CONFIG = './tsconfig.lib.json'
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// eslint-disable-next-line @typescript-eslint/no-var-requires
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const { baseUrl, paths }: CompilerOptions = require(TS_CONFIG).compilerOptions
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const aliases = Object.entries({ ...paths }).flatMap(([find, replacements]) => {
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return replacements.map((replacement) => ({
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find: path.dirname(find),
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replacement: path.join(__dirname, baseUrl || '.', path.dirname(replacement)),
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}))
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})
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const plugins = [
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// Dependency resolution
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externals({ exclude: ['constants'], deps: true, peerDeps: true }), // marks builtins, dependencies, and peerDependencies external
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resolve({ extensions: EXTENSIONS }), // resolves third-party modules within node_modules/
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alias({ entries: aliases }), // resolves paths aliased through the tsconfig (babel does not use tsconfig path resolution)
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// Source code transformation
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replace({ ...REPLACEMENTS, preventAssignment: true }),
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json(), // imports json; doing so type-checking allows the json to be type-checked
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]
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const check = {
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input: 'src/lib/index.tsx',
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output: { file: 'dist/widgets.tsc' },
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external: isAsset,
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plugins: [...plugins, typescript({ tsconfig: TS_CONFIG })],
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onwarn: squelchTranspilationWarnings, // this pipeline is only for typechecking and generating definitions
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}
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const type = {
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input: 'dist/dts/lib/index.d.ts',
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output: { file: 'dist/widgets.d.ts' },
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external: isAsset,
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plugins: [
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dts({ compilerOptions: { baseUrl: 'dist/dts' } }),
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process.env.ROLLUP_WATCH ? undefined : del({ hook: 'buildEnd', targets: ['dist/widgets.tsc', 'dist/dts'] }),
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],
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}
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const transpile = {
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input: 'src/lib/index.tsx',
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output: [
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{
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file: 'dist/widgets.js',
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format: 'cjs',
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sourcemap: false,
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},
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{
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file: 'dist/widgets.esm.js',
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format: 'esm',
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sourcemap: false,
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},
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],
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plugins: [
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...plugins,
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// Source code transformation
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url({ include: ASSET_EXTENSIONS.map((extname) => '**/*' + extname) }), // imports assets as data URIs
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svgr({ exportType: 'named', svgo: false }), // imports svgs as React components
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sass({ insert: true }), // imports inlined sass styles
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commonjs(), // transforms cjs dependencies into tree-shakeable ES modules
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babel({
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babelHelpers: 'runtime',
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presets: ['@babel/preset-env', ['@babel/preset-react', { runtime: 'automatic' }], '@babel/preset-typescript'],
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extensions: EXTENSIONS,
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plugins: [
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'macros', // enables @lingui and styled-components macros
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'@babel/plugin-transform-runtime', // embeds the babel runtime for library distribution
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],
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}),
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copy({
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copyOnce: true,
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targets: [{ src: 'src/locales/*.js', dest: 'dist/locales' }],
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}),
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],
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onwarn: squelchTypeWarnings, // this pipeline is only for transpilation
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}
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const config = [check, type, transpile]
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export default config
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function squelchTranspilationWarnings(warning: RollupWarning, warn: (warning: RollupWarning) => void) {
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if (warning.pluginCode === 'TS5055') return
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warn(warning)
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}
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function squelchTypeWarnings(warning: RollupWarning, warn: (warning: RollupWarning) => void) {
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if (warning.code === 'UNUSED_EXTERNAL_IMPORT') return
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warn(warning)
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}
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