50 lines
1.3 KiB
JavaScript
50 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("../RuntimeTemplate")} RuntimeTemplate */
|
||
|
|
|
||
|
|
class ChunkPrefetchTriggerRuntimeModule extends RuntimeModule {
|
||
|
|
/**
|
||
|
|
* @param {Record<string|number, (string|number)[]>} 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;
|