46 lines
1.3 KiB
JavaScript
46 lines
1.3 KiB
JavaScript
|
/*
|
||
|
|
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("../Compilation")} Compilation */
|
||
|
|
/** @typedef {import("../RuntimeTemplate")} RuntimeTemplate */
|
||
|
|
|
||
|
|
class ChunkPreloadTriggerRuntimeModule extends RuntimeModule {
|
||
|
|
/**
|
||
|
|
* @param {Record<string|number, (string|number)[]>} chunkMap map from chunk to chunks
|
||
|
|
*/
|
||
|
|
constructor(chunkMap) {
|
||
|
|
super(`chunk preload trigger`, RuntimeModule.STAGE_TRIGGER);
|
||
|
|
this.chunkMap = chunkMap;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @returns {string | null} runtime code
|
||
|
|
*/
|
||
|
|
generate() {
|
||
|
|
const { chunkMap } = this;
|
||
|
|
const compilation = /** @type {Compilation} */ (this.compilation);
|
||
|
|
const { runtimeTemplate } = compilation;
|
||
|
|
const body = [
|
||
|
|
"var chunks = chunkToChildrenMap[chunkId];",
|
||
|
|
`Array.isArray(chunks) && chunks.map(${RuntimeGlobals.preloadChunk});`
|
||
|
|
];
|
||
|
|
return Template.asString([
|
||
|
|
Template.asString([
|
||
|
|
`var chunkToChildrenMap = ${JSON.stringify(chunkMap, null, "\t")};`,
|
||
|
|
`${
|
||
|
|
RuntimeGlobals.ensureChunkHandlers
|
||
|
|
}.preload = ${runtimeTemplate.basicFunction("chunkId", body)};`
|
||
|
|
])
|
||
|
|
]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = ChunkPreloadTriggerRuntimeModule;
|