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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
commite06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch)
tree55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/webpack/lib/OptionsDefaulter.js
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diff --git a/node_modules/webpack/lib/OptionsDefaulter.js b/node_modules/webpack/lib/OptionsDefaulter.js
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+/*
+ MIT License http://www.opensource.org/licenses/mit-license.php
+ Author Tobias Koppers @sokra
+*/
+"use strict";
+
+/**
+ * Gets the value at path of object
+ * @param {object} obj object to query
+ * @param {string} path query path
+ * @returns {any} - if {@param path} requests element from array, then `undefined` will be returned
+ */
+const getProperty = (obj, path) => {
+ let name = path.split(".");
+ for (let i = 0; i < name.length - 1; i++) {
+ obj = obj[name[i]];
+ if (typeof obj !== "object" || !obj || Array.isArray(obj)) return;
+ }
+ return obj[name.pop()];
+};
+
+/**
+ * Sets the value at path of object. Stops execution, if {@param path} requests element from array to be set
+ * @param {object} obj object to query
+ * @param {string} path query path
+ * @param {any} value value to be set
+ * @returns {void}
+ */
+const setProperty = (obj, path, value) => {
+ let name = path.split(".");
+ for (let i = 0; i < name.length - 1; i++) {
+ if (typeof obj[name[i]] !== "object" && obj[name[i]] !== undefined) return;
+ if (Array.isArray(obj[name[i]])) return;
+ if (!obj[name[i]]) obj[name[i]] = {};
+ obj = obj[name[i]];
+ }
+ obj[name.pop()] = value;
+};
+
+/**
+ * @typedef {'call' | 'make' | 'append'} ConfigType
+ */
+/**
+ * @typedef {(options: object) => any} MakeConfigHandler
+ */
+/**
+ * @typedef {(value: any, options: object) => any} CallConfigHandler
+ */
+/**
+ * @typedef {any[]} AppendConfigValues
+ */
+
+class OptionsDefaulter {
+ constructor() {
+ /**
+ * Stores default options settings or functions for computing them
+ */
+ this.defaults = {};
+ /**
+ * Stores configuration for options
+ * @type {{[key: string]: ConfigType}}
+ */
+ this.config = {};
+ }
+
+ /**
+ * Enhancing {@param options} with default values
+ * @param {object} options provided options
+ * @returns {object} - enhanced options
+ * @throws {Error} - will throw error, if configuration value is other then `undefined` or {@link ConfigType}
+ */
+ process(options) {
+ options = Object.assign({}, options);
+ for (let name in this.defaults) {
+ switch (this.config[name]) {
+ /**
+ * If {@link ConfigType} doesn't specified and current value is `undefined`, then default value will be assigned
+ */
+ case undefined:
+ if (getProperty(options, name) === undefined) {
+ setProperty(options, name, this.defaults[name]);
+ }
+ break;
+ /**
+ * Assign result of {@link CallConfigHandler}
+ */
+ case "call":
+ setProperty(
+ options,
+ name,
+ this.defaults[name].call(this, getProperty(options, name), options)
+ );
+ break;
+ /**
+ * Assign result of {@link MakeConfigHandler}, if current value is `undefined`
+ */
+ case "make":
+ if (getProperty(options, name) === undefined) {
+ setProperty(options, name, this.defaults[name].call(this, options));
+ }
+ break;
+ /**
+ * Adding {@link AppendConfigValues} at the end of the current array
+ */
+ case "append": {
+ let oldValue = getProperty(options, name);
+ if (!Array.isArray(oldValue)) {
+ oldValue = [];
+ }
+ oldValue.push(...this.defaults[name]);
+ setProperty(options, name, oldValue);
+ break;
+ }
+ default:
+ throw new Error(
+ "OptionsDefaulter cannot process " + this.config[name]
+ );
+ }
+ }
+ return options;
+ }
+
+ /**
+ * Builds up default values
+ * @param {string} name option path
+ * @param {ConfigType | any} config if {@param def} is provided, then only {@link ConfigType} is allowed
+ * @param {MakeConfigHandler | CallConfigHandler | AppendConfigValues} [def] defaults
+ * @returns {void}
+ */
+ set(name, config, def) {
+ if (def !== undefined) {
+ this.defaults[name] = def;
+ this.config[name] = config;
+ } else {
+ this.defaults[name] = config;
+ delete this.config[name];
+ }
+ }
+}
+
+module.exports = OptionsDefaulter;