init

马宇豪

2024-07-16 f591c27b57e2418c9495bc02ae8cfff84d35bc18

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/*
    MIT License http://www.opensource.org/licenses/mit-license.php
*/
 
"use strict";
 
const RuntimeGlobals = require("../RuntimeGlobals");
const RuntimeModule = require("../RuntimeModule");
 
/** @typedef {import("../MainTemplate")} MainTemplate */
 
class CompatRuntimeModule extends RuntimeModule {
    constructor() {
        super("compat", RuntimeModule.STAGE_ATTACH);
        this.fullHash = true;
    }
 
    /**
     * @returns {string} runtime code
     */
    generate() {
        const { chunkGraph, chunk, compilation } = this;
        const {
            runtimeTemplate,
            mainTemplate,
            moduleTemplates,
            dependencyTemplates
        } = compilation;
        const bootstrap = mainTemplate.hooks.bootstrap.call(
            "",
            chunk,
            compilation.hash || "XXXX",
            moduleTemplates.javascript,
            dependencyTemplates
        );
        const localVars = mainTemplate.hooks.localVars.call(
            "",
            chunk,
            compilation.hash || "XXXX"
        );
        const requireExtensions = mainTemplate.hooks.requireExtensions.call(
            "",
            chunk,
            compilation.hash || "XXXX"
        );
        const runtimeRequirements = chunkGraph.getTreeRuntimeRequirements(chunk);
        let requireEnsure = "";
        if (runtimeRequirements.has(RuntimeGlobals.ensureChunk)) {
            const requireEnsureHandler = mainTemplate.hooks.requireEnsure.call(
                "",
                chunk,
                compilation.hash || "XXXX",
                "chunkId"
            );
            if (requireEnsureHandler) {
                requireEnsure = `${
                    RuntimeGlobals.ensureChunkHandlers
                }.compat = ${runtimeTemplate.basicFunction(
                    "chunkId, promises",
                    requireEnsureHandler
                )};`;
            }
        }
        return [bootstrap, localVars, requireEnsure, requireExtensions]
            .filter(Boolean)
            .join("\n");
    }
 
    /**
     * @returns {boolean} true, if the runtime module should get it's own scope
     */
    shouldIsolate() {
        // We avoid isolating this to have better backward-compat
        return false;
    }
}
 
module.exports = CompatRuntimeModule;