mirror of https://github.com/webpack/webpack.git
131 lines
4.1 KiB
JavaScript
131 lines
4.1 KiB
JavaScript
/*
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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 RuntimeGlobals = require("../RuntimeGlobals");
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const RuntimeModule = require("../RuntimeModule");
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const Template = require("../Template");
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/** @typedef {import("../Chunk")} Chunk */
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/** @typedef {import("./RemoteModule")} RemoteModule */
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class RemoteRuntimeModule extends RuntimeModule {
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constructor() {
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super("remotes loading");
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}
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/**
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* @returns {string} runtime code
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*/
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generate() {
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const { compilation, chunkGraph } = this;
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const { runtimeTemplate, moduleGraph } = compilation;
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const chunkToRemotesMapping = {};
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const idToExternalAndNameMapping = {};
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for (const chunk of this.chunk.getAllAsyncChunks()) {
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const modules = chunkGraph.getChunkModulesIterableBySourceType(
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chunk,
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"remote"
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);
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if (!modules) continue;
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const remotes = (chunkToRemotesMapping[chunk.id] = []);
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for (const m of modules) {
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const module = /** @type {RemoteModule} */ (m);
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const name = module.internalRequest;
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const id = chunkGraph.getModuleId(module);
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const shareScope = module.shareScope;
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const dep = module.dependencies[0];
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const externalModule = moduleGraph.getModule(dep);
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const externalModuleId =
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externalModule && chunkGraph.getModuleId(externalModule);
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remotes.push(id);
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idToExternalAndNameMapping[id] = [shareScope, name, externalModuleId];
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}
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}
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return Template.asString([
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`var chunkMapping = ${JSON.stringify(
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chunkToRemotesMapping,
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null,
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"\t"
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)};`,
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`var idToExternalAndNameMapping = ${JSON.stringify(
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idToExternalAndNameMapping,
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null,
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"\t"
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)};`,
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`${
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RuntimeGlobals.ensureChunkHandlers
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}.remotes = ${runtimeTemplate.basicFunction("chunkId, promises", [
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`if(${RuntimeGlobals.hasOwnProperty}(chunkMapping, chunkId)) {`,
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Template.indent([
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`chunkMapping[chunkId].forEach(${runtimeTemplate.basicFunction("id", [
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`var getScope = ${RuntimeGlobals.currentRemoteGetScope};`,
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"if(!getScope) getScope = [];",
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"var data = idToExternalAndNameMapping[id];",
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"if(getScope.indexOf(data) >= 0) return;",
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"getScope.push(data);",
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`if(data.p) return promises.push(data.p);`,
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`var onError = ${runtimeTemplate.basicFunction("error", [
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'if(!error) error = new Error("Container missing");',
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'if(typeof error.message === "string")',
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Template.indent(
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`error.message += '\\nwhile loading "' + data[1] + '" from ' + data[2];`
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),
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`${
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RuntimeGlobals.moduleFactories
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}[id] = ${runtimeTemplate.basicFunction("", ["throw error;"])}`,
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"data.p = 0;"
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])};`,
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`var handleFunction = ${runtimeTemplate.basicFunction(
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"fn, arg1, arg2, d, next, first",
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[
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"try {",
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Template.indent([
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"var promise = fn(arg1, arg2);",
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"if(promise && promise.then) {",
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Template.indent([
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`var p = promise.then(${runtimeTemplate.returningFunction(
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"next(result, d)",
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"result"
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)}, onError);`,
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`if(first) promises.push(data.p = p); else return p;`
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]),
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"} else {",
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Template.indent(["return next(promise, d, first);"]),
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"}"
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]),
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"} catch(error) {",
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Template.indent(["onError(error);"]),
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"}"
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]
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)}`,
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`var onExternal = ${runtimeTemplate.returningFunction(
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`external ? handleFunction(${RuntimeGlobals.initializeSharing}, data[0], 0, external, onInitialized, first) : onError()`,
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"external, _, first"
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)};`,
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`var onInitialized = ${runtimeTemplate.returningFunction(
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`handleFunction(external.get, data[1], getScope, 0, onFactory, first)`,
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"_, external, first"
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)};`,
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`var onFactory = ${runtimeTemplate.basicFunction("factory", [
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"data.p = 1;",
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`${
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RuntimeGlobals.moduleFactories
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}[id] = ${runtimeTemplate.basicFunction("module", [
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"module.exports = factory();"
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])}`
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])};`,
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`handleFunction(${RuntimeGlobals.require}, data[2], 0, 0, onExternal, 1);`
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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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}
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module.exports = RemoteRuntimeModule;
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