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git.proxmox.com Git - pve-eslint.git/blob - eslint/lib/rules/utils/lazy-loading-rule-map.js
2 * @fileoverview `Map` to load rules lazily.
3 * @author Toru Nagashima <https://github.com/mysticatea>
7 const debug
= require("debug")("eslint:rules");
9 /** @typedef {import("./types").Rule} Rule */
12 * The `Map` object that loads each rule when it's accessed.
14 * const rules = new LazyLoadingRuleMap([
15 * ["eqeqeq", () => require("eqeqeq")],
16 * ["semi", () => require("semi")],
17 * ["no-unused-vars", () => require("no-unused-vars")],
20 * rules.get("semi") // call `() => require("semi")` here.
22 * @extends {Map<string, () => Rule>}
24 class LazyLoadingRuleMap
extends Map
{
27 * Initialize this map.
28 * @param {Array<[string, function(): Rule]>} loaders The rule loaders.
30 constructor(loaders
) {
31 let remaining
= loaders
.length
;
35 ? loaders
.map(([ruleId
, load
]) => {
42 debug("Loading rule %o (remaining=%d)", ruleId
, --remaining
);
52 // `super(...iterable)` uses `this.set()`, so disable it here.
53 Object
.defineProperty(LazyLoadingRuleMap
.prototype, "set", {
61 * Each rule will be loaded on the first access.
62 * @param {string} ruleId The rule ID to get.
63 * @returns {Rule|undefined} The rule.
66 const load
= super.get(ruleId
);
68 return load
&& load();
73 * @returns {IterableIterator<Rule>} Rules.
76 for (const load
of super.values()) {
83 * @returns {IterableIterator<[string, Rule]>} Rules.
86 for (const [ruleId
, load
] of super.entries()) {
87 yield [ruleId
, load()];
92 * Call a function with each rule.
93 * @param {Function} callbackFn The callback function.
94 * @param {any} [thisArg] The object to pass to `this` of the callback function.
97 forEach(callbackFn
, thisArg
) {
98 for (const [ruleId
, load
] of super.entries()) {
99 callbackFn
.call(thisArg
, load(), ruleId
, this);
105 Object
.defineProperties(LazyLoadingRuleMap
.prototype, {
106 clear
: { configurable
: true, value
: void 0 },
107 delete: { configurable
: true, value
: void 0 },
111 value
: LazyLoadingRuleMap
.prototype.entries
115 module
.exports
= { LazyLoadingRuleMap
};