mirror of
https://github.com/denoland/deno.git
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183 lines
5.6 KiB
JavaScript
183 lines
5.6 KiB
JavaScript
import path from "path";
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import alias from "rollup-plugin-alias";
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import { plugin as analyze } from "rollup-plugin-analyzer";
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import commonjs from "rollup-plugin-commonjs";
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import globals from "rollup-plugin-node-globals";
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import nodeResolve from "rollup-plugin-node-resolve";
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import typescriptPlugin from "rollup-plugin-typescript2";
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import { createFilter } from "rollup-pluginutils";
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import typescript from "typescript";
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const mockPath = path.join(__dirname, "js", "mock_builtin.js");
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const tsconfig = path.join(__dirname, "tsconfig.json");
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const typescriptPath = `${
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process.env.BASEPATH
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}/third_party/node_modules/typescript/lib/typescript.js`;
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// We will allow generated modules to be resolvable by TypeScript based on
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// the current build path
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const tsconfigOverride = {
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compilerOptions: {
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paths: {
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"*": ["*", path.join(process.cwd(), "*")]
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}
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}
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};
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// this is a rollup plugin which will look for imports ending with `!string` and resolve
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// them with a module that will inline the contents of the file as a string. Needed to
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// support `js/assets.ts`.
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function strings({ include, exclude } = {}) {
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if (!include) {
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throw new Error("include option must be passed");
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}
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const filter = createFilter(include, exclude);
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return {
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name: "strings",
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resolveId(importee) {
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if (importee.endsWith("!string")) {
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return path.resolve(
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path.join(
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process.env.BASEPATH,
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importee.slice(0, importee.lastIndexOf("!string"))
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)
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);
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}
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},
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transform(code, id) {
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if (filter(id)) {
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return {
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code: `export default ${JSON.stringify(code)};`,
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map: { mappings: "" }
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};
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}
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}
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};
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}
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// This plugin resolves at bundle time any generated resources that are
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// in the build path under `gen` and specified with a MID starting with `gen/`.
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// The plugin assumes that the MID needs to have the `.ts` extension appended.
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function resolveGenerated() {
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return {
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name: "resolve-msg-generated",
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resolveId(importee) {
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if (importee.startsWith("gen/")) {
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const resolved = path.resolve(
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path.join(process.cwd(), `${importee}.ts`)
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);
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return resolved;
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}
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}
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};
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}
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export default function makeConfig(commandOptions) {
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return {
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output: {
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format: "iife",
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name: "denoMain",
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sourcemap: true
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},
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plugins: [
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// would prefer to use `rollup-plugin-virtual` to inject the empty module, but there
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// is an issue with `rollup-plugin-commonjs` which causes errors when using the
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// virtual plugin (see: rollup/rollup-plugin-commonjs#315), this means we have to use
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// a physical module to substitute
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alias({
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fs: mockPath,
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path: mockPath,
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os: mockPath,
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crypto: mockPath,
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buffer: mockPath,
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module: mockPath
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}),
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// Resolves any resources that have been generated at build time
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resolveGenerated(),
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// Allows rollup to resolve modules based on Node.js resolution
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nodeResolve({
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jsnext: true,
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main: true
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}),
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// Allows rollup to import CommonJS modules
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commonjs({
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namedExports: {
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// Static analysis of `typescript.js` does detect the exports properly, therefore
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// rollup requires them to be explicitly defined to avoid generating warnings
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[typescriptPath]: [
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"createLanguageService",
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"formatDiagnosticsWithColorAndContext",
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"ModuleKind",
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"ScriptSnapshot",
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"ScriptTarget",
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"version"
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]
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}
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}),
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typescriptPlugin({
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// The build script is invoked from `out/:target` so passing an absolute file path is needed
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tsconfig,
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// This provides any overrides to the `tsconfig.json` that are needed to bundle
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tsconfigOverride,
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// This provides the locally configured version of TypeScript instead of the plugins
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// default version
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typescript,
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// By default, the include path only includes the cwd and below, need to include the root of the project
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// and build path to be passed to this plugin. This is different front tsconfig.json include
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include: ["*.ts", `${__dirname}/**/*.ts`, `${process.cwd()}/**/*.ts`],
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// d.ts files are not bundled and by default like include, it only includes the cwd and below
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exclude: [
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"*.d.ts",
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`${__dirname}/**/*.d.ts`,
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`${process.cwd()}/**/*.d.ts`
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]
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}),
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// Provides inlining of file contents for `js/assets.ts`
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strings({
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include: ["*.d.ts", `${__dirname}/**/*.d.ts`]
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}),
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// Provide some concise information about the bundle
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analyze({
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skipFormatted: true,
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onAnalysis({
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bundleSize,
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bundleOrigSize,
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bundleReduction,
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moduleCount
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}) {
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if (!commandOptions.silent) {
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console.log(
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`Bundle size: ${Math.round((bundleSize / 1000000) * 100) / 100}Mb`
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);
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console.log(
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`Original size: ${Math.round((bundleOrigSize / 1000000) * 100) /
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100}Mb`
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);
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console.log(`Reduction: ${bundleReduction}%`);
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console.log(`Module count: ${moduleCount}`);
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}
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}
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}),
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// source-map-support, which is required by TypeScript to support source maps, requires Node.js Buffer
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// implementation. This needs to come at the end of the plugins because of the impact it has on
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// the existing runtime environment, which breaks other plugins and features of the bundler.
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globals()
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]
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};
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}
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