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141 lines
3.9 KiB
141 lines
3.9 KiB
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const AliasPlugin = require("enhanced-resolve/lib/AliasPlugin");
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const ParserHelpers = require("../ParserHelpers");
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const nodeLibsBrowser = require("node-libs-browser");
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module.exports = class NodeSourcePlugin {
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constructor(options) {
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this.options = options;
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}
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apply(compiler) {
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const options = this.options;
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if (options === false) {
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// allow single kill switch to turn off this plugin
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return;
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}
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const getPathToModule = (module, type) => {
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if (type === true || (type === undefined && nodeLibsBrowser[module])) {
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if (!nodeLibsBrowser[module]) {
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throw new Error(
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`No browser version for node.js core module ${module} available`
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);
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}
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return nodeLibsBrowser[module];
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} else if (type === "mock") {
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return require.resolve(`node-libs-browser/mock/${module}`);
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} else if (type === "empty") {
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return require.resolve("node-libs-browser/mock/empty");
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} else {
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return module;
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}
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};
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const addExpression = (parser, name, module, type, suffix) => {
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suffix = suffix || "";
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parser.hooks.expression.for(name).tap("NodeSourcePlugin", () => {
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if (
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parser.state.module &&
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parser.state.module.resource === getPathToModule(module, type)
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)
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return;
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const mockModule = ParserHelpers.requireFileAsExpression(
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parser.state.module.context,
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getPathToModule(module, type)
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);
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return ParserHelpers.addParsedVariableToModule(
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parser,
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name,
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mockModule + suffix
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);
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});
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};
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compiler.hooks.compilation.tap(
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"NodeSourcePlugin",
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(compilation, { normalModuleFactory }) => {
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const handler = (parser, parserOptions) => {
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if (parserOptions.node === false) return;
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let localOptions = options;
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if (parserOptions.node) {
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localOptions = Object.assign({}, localOptions, parserOptions.node);
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}
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if (localOptions.global) {
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parser.hooks.expression
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.for("global")
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.tap("NodeSourcePlugin", () => {
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const retrieveGlobalModule = ParserHelpers.requireFileAsExpression(
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parser.state.module.context,
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require.resolve("../../buildin/global")
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);
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return ParserHelpers.addParsedVariableToModule(
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parser,
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"global",
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retrieveGlobalModule
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);
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});
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}
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if (localOptions.process) {
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const processType = localOptions.process;
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addExpression(parser, "process", "process", processType);
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}
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if (localOptions.console) {
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const consoleType = localOptions.console;
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addExpression(parser, "console", "console", consoleType);
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}
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const bufferType = localOptions.Buffer;
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if (bufferType) {
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addExpression(parser, "Buffer", "buffer", bufferType, ".Buffer");
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}
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if (localOptions.setImmediate) {
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const setImmediateType = localOptions.setImmediate;
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addExpression(
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parser,
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"setImmediate",
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"timers",
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setImmediateType,
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".setImmediate"
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);
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addExpression(
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parser,
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"clearImmediate",
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"timers",
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setImmediateType,
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".clearImmediate"
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);
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}
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};
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normalModuleFactory.hooks.parser
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.for("javascript/auto")
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.tap("NodeSourcePlugin", handler);
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normalModuleFactory.hooks.parser
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.for("javascript/dynamic")
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.tap("NodeSourcePlugin", handler);
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}
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);
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compiler.hooks.afterResolvers.tap("NodeSourcePlugin", compiler => {
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for (const lib of Object.keys(nodeLibsBrowser)) {
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if (options[lib] !== false) {
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compiler.resolverFactory.hooks.resolver
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.for("normal")
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.tap("NodeSourcePlugin", resolver => {
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new AliasPlugin(
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"described-resolve",
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{
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name: lib,
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onlyModule: true,
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alias: getPathToModule(lib, options[lib])
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},
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"resolve"
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).apply(resolver);
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});
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}
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}
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});
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}
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};
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