/* MIT License http://www.opensource.org/licenses/mit-license.php */ "use strict"; const RuntimeGlobals = require("../RuntimeGlobals"); const RuntimeModule = require("../RuntimeModule"); const Template = require("../Template"); /** @typedef {import("../RuntimeTemplate")} RuntimeTemplate */ class ChunkPrefetchTriggerRuntimeModule extends RuntimeModule { /** * @param {Record} chunkMap map from chunk to */ constructor(chunkMap) { super(`chunk prefetch trigger`, RuntimeModule.STAGE_TRIGGER); this.chunkMap = chunkMap; } /** * @returns {string} runtime code */ generate() { const { chunkMap } = this; const { runtimeTemplate } = this.compilation; const body = [ "var chunks = chunkToChildrenMap[chunkId];", `Array.isArray(chunks) && chunks.map(${RuntimeGlobals.prefetchChunk});` ]; return Template.asString([ Template.asString([ `var chunkToChildrenMap = ${JSON.stringify(chunkMap, null, "\t")};`, `${ RuntimeGlobals.ensureChunkHandlers }.prefetch = ${runtimeTemplate.expressionFunction( `Promise.all(promises).then(${runtimeTemplate.basicFunction( "", body )})`, "chunkId, promises" )};` ]) ]); } } module.exports = ChunkPrefetchTriggerRuntimeModule;