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4 years ago
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const { ConcatSource } = require("webpack-sources");
/** @typedef {import("./Compilation")} Compilation */
/**
* @param {string[]} accessor the accessor to convert to path
* @returns {string} the path
*/
const accessorToObjectAccess = accessor => {
return accessor.map(a => `[${JSON.stringify(a)}]`).join("");
};
class ExportPropertyMainTemplatePlugin {
/**
* @param {string|string[]} property the name of the property to export
*/
constructor(property) {
this.property = property;
}
/**
* @param {Compilation} compilation the compilation instance
* @returns {void}
*/
apply(compilation) {
const { mainTemplate, chunkTemplate } = compilation;
const onRenderWithEntry = (source, chunk, hash) => {
const postfix = `${accessorToObjectAccess([].concat(this.property))}`;
return new ConcatSource(source, postfix);
};
for (const template of [mainTemplate, chunkTemplate]) {
template.hooks.renderWithEntry.tap(
"ExportPropertyMainTemplatePlugin",
onRenderWithEntry
);
}
mainTemplate.hooks.hash.tap("ExportPropertyMainTemplatePlugin", hash => {
hash.update("export property");
hash.update(`${this.property}`);
});
}
}
module.exports = ExportPropertyMainTemplatePlugin;