source: imaps-frontend/node_modules/webpack/lib/runtime/StartupChunkDependenciesPlugin.js

/*
        MIT License http://www.opensource.org/licenses/mit-license.php
*/

"use strict";

const RuntimeGlobals = require("../RuntimeGlobals");
const StartupChunkDependenciesRuntimeModule = require("./StartupChunkDependenciesRuntimeModule");
const StartupEntrypointRuntimeModule = require("./StartupEntrypointRuntimeModule");

/** @typedef {import("../../declarations/WebpackOptions").ChunkLoadingType} ChunkLoadingType */
/** @typedef {import("../Chunk")} Chunk */
/** @typedef {import("../Compiler")} Compiler */

/**
 * @typedef {object} Options
 * @property {ChunkLoadingType} chunkLoading
 * @property {boolean=} asyncChunkLoading
 */

class StartupChunkDependenciesPlugin {
        /**
         * @param {Options} options options
         */
        constructor(options) {
                this.chunkLoading = options.chunkLoading;
                this.asyncChunkLoading =
                        typeof options.asyncChunkLoading === "boolean"
                                ? options.asyncChunkLoading
                                : true;
        }

        /**
         * Apply the plugin
         * @param {Compiler} compiler the compiler instance
         * @returns {void}
         */
        apply(compiler) {
                compiler.hooks.thisCompilation.tap(
                        "StartupChunkDependenciesPlugin",
                        compilation => {
                                const globalChunkLoading = compilation.outputOptions.chunkLoading;
                                /**
                                 * @param {Chunk} chunk chunk to check
                                 * @returns {boolean} true, when the plugin is enabled for the chunk
                                 */
                                const isEnabledForChunk = chunk => {
                                        const options = chunk.getEntryOptions();
                                        const chunkLoading =
                                                options && options.chunkLoading !== undefined
                                                        ? options.chunkLoading
                                                        : globalChunkLoading;
                                        return chunkLoading === this.chunkLoading;
                                };
                                compilation.hooks.additionalTreeRuntimeRequirements.tap(
                                        "StartupChunkDependenciesPlugin",
                                        (chunk, set, { chunkGraph }) => {
                                                if (!isEnabledForChunk(chunk)) return;
                                                if (chunkGraph.hasChunkEntryDependentChunks(chunk)) {
                                                        set.add(RuntimeGlobals.startup);
                                                        set.add(RuntimeGlobals.ensureChunk);
                                                        set.add(RuntimeGlobals.ensureChunkIncludeEntries);
                                                        compilation.addRuntimeModule(
                                                                chunk,
                                                                new StartupChunkDependenciesRuntimeModule(
                                                                        this.asyncChunkLoading
                                                                )
                                                        );
                                                }
                                        }
                                );
                                compilation.hooks.runtimeRequirementInTree
                                        .for(RuntimeGlobals.startupEntrypoint)
                                        .tap("StartupChunkDependenciesPlugin", (chunk, set) => {
                                                if (!isEnabledForChunk(chunk)) return;
                                                set.add(RuntimeGlobals.require);
                                                set.add(RuntimeGlobals.ensureChunk);
                                                set.add(RuntimeGlobals.ensureChunkIncludeEntries);
                                                compilation.addRuntimeModule(
                                                        chunk,
                                                        new StartupEntrypointRuntimeModule(this.asyncChunkLoading)
                                                );
                                        });
                        }
                );
        }
}

module.exports = StartupChunkDependenciesPlugin;