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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const { ConcatSource } = require("webpack-sources");
/** @typedef {import("../ChunkTemplate")} ChunkTemplate */
const getEntryInfo = chunk => {
return [chunk.entryModule].filter(Boolean).map(m =>
[m.id].concat(
Array.from(chunk.groupsIterable)[0]
.chunks.filter(c => c !== chunk)
.map(c => c.id)
)
);
};
class JsonpChunkTemplatePlugin {
/**
* @param {ChunkTemplate} chunkTemplate the chunk template
* @returns {void}
*/
apply(chunkTemplate) {
chunkTemplate.hooks.render.tap(
"JsonpChunkTemplatePlugin",
(modules, chunk) => {
const jsonpFunction = chunkTemplate.outputOptions.jsonpFunction;
const globalObject = chunkTemplate.outputOptions.globalObject;
const source = new ConcatSource();
const prefetchChunks = chunk.getChildIdsByOrders().prefetch;
source.add(
`(${globalObject}[${JSON.stringify(
jsonpFunction
)}] = ${globalObject}[${JSON.stringify(
jsonpFunction
)}] || []).push([${JSON.stringify(chunk.ids)},`
);
source.add(modules);
const entries = getEntryInfo(chunk);
if (entries.length > 0) {
source.add(`,${JSON.stringify(entries)}`);
} else if (prefetchChunks && prefetchChunks.length) {
source.add(`,0`);
}
if (prefetchChunks && prefetchChunks.length) {
source.add(`,${JSON.stringify(prefetchChunks)}`);
}
source.add("])");
return source;
}
);
chunkTemplate.hooks.hash.tap("JsonpChunkTemplatePlugin", hash => {
hash.update("JsonpChunkTemplatePlugin");
hash.update("4");
hash.update(`${chunkTemplate.outputOptions.jsonpFunction}`);
hash.update(`${chunkTemplate.outputOptions.globalObject}`);
});
chunkTemplate.hooks.hashForChunk.tap(
"JsonpChunkTemplatePlugin",
(hash, chunk) => {
hash.update(JSON.stringify(getEntryInfo(chunk)));
hash.update(JSON.stringify(chunk.getChildIdsByOrders().prefetch) || "");
}
);
}
}
module.exports = JsonpChunkTemplatePlugin;