mirror of https://github.com/webpack/webpack.git
58 lines
1.4 KiB
JavaScript
58 lines
1.4 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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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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/** @typedef {import("../MainTemplate")} MainTemplate */
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class CompatRuntimePlugin extends RuntimeModule {
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constructor() {
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super("compat", 10);
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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 { chunk, compilation } = this;
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const { chunkGraph, runtimeTemplate, mainTemplate } = compilation;
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const localVars = mainTemplate.hooks.localVars.call(
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"",
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chunk,
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compilation.hash || "XXXX"
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);
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const requireExtensions = mainTemplate.hooks.requireExtensions.call(
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"",
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chunk,
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compilation.hash || "XXXX"
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);
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const runtimeRequirements = chunkGraph.getTreeRuntimeRequirements(chunk);
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let requireEnsure = "";
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if (runtimeRequirements.has(RuntimeGlobals.ensureChunk)) {
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const requireEnsureHandler = mainTemplate.hooks.requireEnsure.call(
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"",
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chunk,
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compilation.hash || "XXXX",
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"chunkId"
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);
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if (requireEnsureHandler) {
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requireEnsure = `${
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RuntimeGlobals.ensureChunkHandlers
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}.compat = ${runtimeTemplate.basicFunction(
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"chunkId, promises",
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requireEnsureHandler
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)};`;
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}
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}
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return [localVars, requireEnsure, requireExtensions]
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.filter(Boolean)
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.join("\n");
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}
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}
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module.exports = CompatRuntimePlugin;
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