76 lines
2.2 KiB
JavaScript
76 lines
2.2 KiB
JavaScript
/*
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
|
Author Tobias Koppers @sokra
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
const RuntimeGlobals = require("../RuntimeGlobals");
|
|
const RuntimeModule = require("../RuntimeModule");
|
|
const Template = require("../Template");
|
|
|
|
/** @typedef {import("../Chunk")} Chunk */
|
|
/** @typedef {import("../ChunkGraph")} ChunkGraph */
|
|
/** @typedef {import("../Compilation")} Compilation */
|
|
|
|
class StartupChunkDependenciesRuntimeModule extends RuntimeModule {
|
|
/**
|
|
* @param {boolean} asyncChunkLoading use async chunk loading
|
|
*/
|
|
constructor(asyncChunkLoading) {
|
|
super("startup chunk dependencies", RuntimeModule.STAGE_TRIGGER);
|
|
this.asyncChunkLoading = asyncChunkLoading;
|
|
}
|
|
|
|
/**
|
|
* @returns {string | null} runtime code
|
|
*/
|
|
generate() {
|
|
const chunkGraph = /** @type {ChunkGraph} */ (this.chunkGraph);
|
|
const chunk = /** @type {Chunk} */ (this.chunk);
|
|
const chunkIds = Array.from(
|
|
chunkGraph.getChunkEntryDependentChunksIterable(chunk)
|
|
).map(chunk => chunk.id);
|
|
const compilation = /** @type {Compilation} */ (this.compilation);
|
|
const { runtimeTemplate } = compilation;
|
|
return Template.asString([
|
|
`var next = ${RuntimeGlobals.startup};`,
|
|
`${RuntimeGlobals.startup} = ${runtimeTemplate.basicFunction(
|
|
"",
|
|
!this.asyncChunkLoading
|
|
? chunkIds
|
|
.map(
|
|
id => `${RuntimeGlobals.ensureChunk}(${JSON.stringify(id)});`
|
|
)
|
|
.concat("return next();")
|
|
: chunkIds.length === 1
|
|
? `return ${RuntimeGlobals.ensureChunk}(${JSON.stringify(
|
|
chunkIds[0]
|
|
)}).then(next);`
|
|
: chunkIds.length > 2
|
|
? [
|
|
// using map is shorter for 3 or more chunks
|
|
`return Promise.all(${JSON.stringify(chunkIds)}.map(${
|
|
RuntimeGlobals.ensureChunk
|
|
}, ${RuntimeGlobals.require})).then(next);`
|
|
]
|
|
: [
|
|
// calling ensureChunk directly is shorter for 0 - 2 chunks
|
|
"return Promise.all([",
|
|
Template.indent(
|
|
chunkIds
|
|
.map(
|
|
id =>
|
|
`${RuntimeGlobals.ensureChunk}(${JSON.stringify(id)})`
|
|
)
|
|
.join(",\n")
|
|
),
|
|
"]).then(next);"
|
|
]
|
|
)};`
|
|
]);
|
|
}
|
|
}
|
|
|
|
module.exports = StartupChunkDependenciesRuntimeModule;
|