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app_vue/node_modules/webpack/lib/dependencies/JsonExportsDependency.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const makeSerializable = require("../util/makeSerializable");
+const NullDependency = require("./NullDependency");
+
+/** @typedef {import("../ChunkGraph")} ChunkGraph */
+/** @typedef {import("../Dependency").ExportSpec} ExportSpec */
+/** @typedef {import("../Dependency").ExportsSpec} ExportsSpec */
+/** @typedef {import("../Dependency").UpdateHashContext} UpdateHashContext */
+/** @typedef {import("../ModuleGraph")} ModuleGraph */
+/** @typedef {import("../json/JsonData")} JsonData */
+/** @typedef {import("../json/JsonData").JsonValue} JsonValue */
+/** @typedef {import("../serialization/ObjectMiddleware").ObjectDeserializerContext} ObjectDeserializerContext */
+/** @typedef {import("../serialization/ObjectMiddleware").ObjectSerializerContext} ObjectSerializerContext */
+/** @typedef {import("../util/Hash")} Hash */
+
+/**
+ * @callback GetExportsFromDataFn
+ * @param {JsonValue} data raw json data
+ * @param {number=} curDepth current depth
+ * @returns {ExportSpec[] | null} export spec or nothing
+ */
+
+/**
+ * @param {number} exportsDepth exportsDepth
+ * @returns {GetExportsFromDataFn} value
+ */
+const getExportsWithDepth = exportsDepth =>
+	/** @type {GetExportsFromDataFn} */
+	function getExportsFromData(data, curDepth = 1) {
+		if (curDepth > exportsDepth) {
+			return null;
+		}
+
+		if (data && typeof data === "object") {
+			if (Array.isArray(data)) {
+				return data.length < 100
+					? data.map((item, idx) => ({
+							name: `${idx}`,
+							canMangle: true,
+							exports: getExportsFromData(item, curDepth + 1) || undefined
+						}))
+					: null;
+			}
+
+			/** @type {ExportSpec[]} */
+			const exports = [];
+
+			for (const key of Object.keys(data)) {
+				exports.push({
+					name: key,
+					canMangle: true,
+					exports: getExportsFromData(data[key], curDepth + 1) || undefined
+				});
+			}
+
+			return exports;
+		}
+
+		return null;
+	};
+
+class JsonExportsDependency extends NullDependency {
+	/**
+	 * @param {JsonData} data json data
+	 * @param {number} exportsDepth the depth of json exports to analyze
+	 */
+	constructor(data, exportsDepth) {
+		super();
+		this.data = data;
+		this.exportsDepth = exportsDepth;
+	}
+
+	get type() {
+		return "json exports";
+	}
+
+	/**
+	 * Returns the exported names
+	 * @param {ModuleGraph} moduleGraph module graph
+	 * @returns {ExportsSpec | undefined} export names
+	 */
+	getExports(moduleGraph) {
+		return {
+			exports: getExportsWithDepth(this.exportsDepth)(
+				this.data && /** @type {JsonValue} */ (this.data.get())
+			),
+			dependencies: undefined
+		};
+	}
+
+	/**
+	 * Update the hash
+	 * @param {Hash} hash hash to be updated
+	 * @param {UpdateHashContext} context context
+	 * @returns {void}
+	 */
+	updateHash(hash, context) {
+		this.data.updateHash(hash);
+	}
+
+	/**
+	 * @param {ObjectSerializerContext} context context
+	 */
+	serialize(context) {
+		const { write } = context;
+		write(this.data);
+		write(this.exportsDepth);
+		super.serialize(context);
+	}
+
+	/**
+	 * @param {ObjectDeserializerContext} context context
+	 */
+	deserialize(context) {
+		const { read } = context;
+		this.data = read();
+		this.exportsDepth = read();
+		super.deserialize(context);
+	}
+}
+
+makeSerializable(
+	JsonExportsDependency,
+	"webpack/lib/dependencies/JsonExportsDependency"
+);
+
+module.exports = JsonExportsDependency;