517 lines
16 KiB
JavaScript
517 lines
16 KiB
JavaScript
var __defProp = Object.defineProperty;
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var __name = (target, value) => __defProp(target, "name", { value, configurable: true });
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// src/collection.ts
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var Collection = class _Collection extends Map {
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static {
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__name(this, "Collection");
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}
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/**
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* Obtains the value of the given key if it exists, otherwise sets and returns the value provided by the default value generator.
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*
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* @param key - The key to get if it exists, or set otherwise
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* @param defaultValueGenerator - A function that generates the default value
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* @example
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* ```ts
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* collection.ensure(guildId, () => defaultGuildConfig);
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* ```
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*/
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ensure(key, defaultValueGenerator) {
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if (this.has(key))
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return this.get(key);
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if (typeof defaultValueGenerator !== "function")
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throw new TypeError(`${defaultValueGenerator} is not a function`);
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const defaultValue = defaultValueGenerator(key, this);
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this.set(key, defaultValue);
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return defaultValue;
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}
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/**
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* Checks if all of the elements exist in the collection.
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*
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* @param keys - The keys of the elements to check for
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* @returns `true` if all of the elements exist, `false` if at least one does not exist.
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*/
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hasAll(...keys) {
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return keys.every((key) => super.has(key));
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}
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/**
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* Checks if any of the elements exist in the collection.
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*
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* @param keys - The keys of the elements to check for
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* @returns `true` if any of the elements exist, `false` if none exist.
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*/
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hasAny(...keys) {
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return keys.some((key) => super.has(key));
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}
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first(amount) {
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if (amount === void 0)
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return this.values().next().value;
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if (amount < 0)
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return this.last(amount * -1);
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amount = Math.min(this.size, amount);
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const iter = this.values();
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return Array.from({ length: amount }, () => iter.next().value);
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}
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firstKey(amount) {
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if (amount === void 0)
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return this.keys().next().value;
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if (amount < 0)
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return this.lastKey(amount * -1);
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amount = Math.min(this.size, amount);
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const iter = this.keys();
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return Array.from({ length: amount }, () => iter.next().value);
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}
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last(amount) {
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const arr = [...this.values()];
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if (amount === void 0)
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return arr[arr.length - 1];
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if (amount < 0)
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return this.first(amount * -1);
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if (!amount)
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return [];
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return arr.slice(-amount);
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}
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lastKey(amount) {
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const arr = [...this.keys()];
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if (amount === void 0)
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return arr[arr.length - 1];
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if (amount < 0)
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return this.firstKey(amount * -1);
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if (!amount)
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return [];
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return arr.slice(-amount);
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}
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/**
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* Identical to {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/at | Array.at()}.
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* Returns the item at a given index, allowing for positive and negative integers.
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* Negative integers count back from the last item in the collection.
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*
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* @param index - The index of the element to obtain
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*/
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at(index) {
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index = Math.floor(index);
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const arr = [...this.values()];
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return arr.at(index);
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}
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/**
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* Identical to {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/at | Array.at()}.
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* Returns the key at a given index, allowing for positive and negative integers.
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* Negative integers count back from the last item in the collection.
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*
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* @param index - The index of the key to obtain
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*/
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keyAt(index) {
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index = Math.floor(index);
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const arr = [...this.keys()];
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return arr.at(index);
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}
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random(amount) {
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const arr = [...this.values()];
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if (amount === void 0)
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return arr[Math.floor(Math.random() * arr.length)];
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if (!arr.length || !amount)
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return [];
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return Array.from(
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{ length: Math.min(amount, arr.length) },
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() => arr.splice(Math.floor(Math.random() * arr.length), 1)[0]
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);
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}
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randomKey(amount) {
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const arr = [...this.keys()];
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if (amount === void 0)
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return arr[Math.floor(Math.random() * arr.length)];
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if (!arr.length || !amount)
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return [];
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return Array.from(
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{ length: Math.min(amount, arr.length) },
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() => arr.splice(Math.floor(Math.random() * arr.length), 1)[0]
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);
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}
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/**
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* Identical to {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reverse | Array.reverse()}
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* but returns a Collection instead of an Array.
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*/
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reverse() {
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const entries = [...this.entries()].reverse();
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this.clear();
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for (const [key, value] of entries)
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this.set(key, value);
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return this;
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}
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find(fn, thisArg) {
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if (typeof fn !== "function")
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throw new TypeError(`${fn} is not a function`);
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if (thisArg !== void 0)
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fn = fn.bind(thisArg);
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for (const [key, val] of this) {
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if (fn(val, key, this))
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return val;
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}
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return void 0;
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}
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findKey(fn, thisArg) {
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if (typeof fn !== "function")
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throw new TypeError(`${fn} is not a function`);
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if (thisArg !== void 0)
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fn = fn.bind(thisArg);
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for (const [key, val] of this) {
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if (fn(val, key, this))
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return key;
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}
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return void 0;
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}
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sweep(fn, thisArg) {
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if (typeof fn !== "function")
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throw new TypeError(`${fn} is not a function`);
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if (thisArg !== void 0)
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fn = fn.bind(thisArg);
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const previousSize = this.size;
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for (const [key, val] of this) {
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if (fn(val, key, this))
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this.delete(key);
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}
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return previousSize - this.size;
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}
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filter(fn, thisArg) {
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if (typeof fn !== "function")
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throw new TypeError(`${fn} is not a function`);
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if (thisArg !== void 0)
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fn = fn.bind(thisArg);
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const results = new this.constructor[Symbol.species]();
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for (const [key, val] of this) {
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if (fn(val, key, this))
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results.set(key, val);
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}
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return results;
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}
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partition(fn, thisArg) {
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if (typeof fn !== "function")
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throw new TypeError(`${fn} is not a function`);
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if (thisArg !== void 0)
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fn = fn.bind(thisArg);
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const results = [
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new this.constructor[Symbol.species](),
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new this.constructor[Symbol.species]()
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];
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for (const [key, val] of this) {
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if (fn(val, key, this)) {
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results[0].set(key, val);
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} else {
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results[1].set(key, val);
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}
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}
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return results;
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}
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flatMap(fn, thisArg) {
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const collections = this.map(fn, thisArg);
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return new this.constructor[Symbol.species]().concat(...collections);
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}
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map(fn, thisArg) {
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if (typeof fn !== "function")
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throw new TypeError(`${fn} is not a function`);
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if (thisArg !== void 0)
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fn = fn.bind(thisArg);
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const iter = this.entries();
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return Array.from({ length: this.size }, () => {
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const [key, value] = iter.next().value;
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return fn(value, key, this);
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});
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}
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mapValues(fn, thisArg) {
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if (typeof fn !== "function")
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throw new TypeError(`${fn} is not a function`);
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if (thisArg !== void 0)
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fn = fn.bind(thisArg);
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const coll = new this.constructor[Symbol.species]();
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for (const [key, val] of this)
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coll.set(key, fn(val, key, this));
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return coll;
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}
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some(fn, thisArg) {
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if (typeof fn !== "function")
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throw new TypeError(`${fn} is not a function`);
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if (thisArg !== void 0)
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fn = fn.bind(thisArg);
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for (const [key, val] of this) {
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if (fn(val, key, this))
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return true;
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}
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return false;
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}
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every(fn, thisArg) {
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if (typeof fn !== "function")
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throw new TypeError(`${fn} is not a function`);
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if (thisArg !== void 0)
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fn = fn.bind(thisArg);
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for (const [key, val] of this) {
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if (!fn(val, key, this))
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return false;
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}
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return true;
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}
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/**
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* Applies a function to produce a single value. Identical in behavior to
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* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce | Array.reduce()}.
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*
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* @param fn - Function used to reduce, taking four arguments; `accumulator`, `currentValue`, `currentKey`,
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* and `collection`
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* @param initialValue - Starting value for the accumulator
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* @example
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* ```ts
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* collection.reduce((acc, guild) => acc + guild.memberCount, 0);
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* ```
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*/
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reduce(fn, initialValue) {
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if (typeof fn !== "function")
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throw new TypeError(`${fn} is not a function`);
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let accumulator;
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const iterator = this.entries();
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if (initialValue === void 0) {
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if (this.size === 0)
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throw new TypeError("Reduce of empty collection with no initial value");
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accumulator = iterator.next().value[1];
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} else {
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accumulator = initialValue;
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}
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for (const [key, value] of iterator) {
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accumulator = fn(accumulator, value, key, this);
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}
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return accumulator;
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}
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each(fn, thisArg) {
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if (typeof fn !== "function")
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throw new TypeError(`${fn} is not a function`);
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if (thisArg !== void 0)
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fn = fn.bind(thisArg);
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for (const [key, value] of this) {
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fn(value, key, this);
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}
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return this;
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}
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tap(fn, thisArg) {
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if (typeof fn !== "function")
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throw new TypeError(`${fn} is not a function`);
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if (thisArg !== void 0)
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fn = fn.bind(thisArg);
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fn(this);
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return this;
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}
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/**
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* Creates an identical shallow copy of this collection.
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*
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* @example
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* ```ts
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* const newColl = someColl.clone();
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* ```
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*/
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clone() {
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return new this.constructor[Symbol.species](this);
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}
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/**
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* Combines this collection with others into a new collection. None of the source collections are modified.
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*
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* @param collections - Collections to merge
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* @example
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* ```ts
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* const newColl = someColl.concat(someOtherColl, anotherColl, ohBoyAColl);
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* ```
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*/
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concat(...collections) {
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const newColl = this.clone();
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for (const coll of collections) {
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for (const [key, val] of coll)
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newColl.set(key, val);
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}
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return newColl;
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}
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/**
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* Checks if this collection shares identical items with another.
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* This is different to checking for equality using equal-signs, because
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* the collections may be different objects, but contain the same data.
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*
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* @param collection - Collection to compare with
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* @returns Whether the collections have identical contents
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*/
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equals(collection) {
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if (!collection)
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return false;
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if (this === collection)
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return true;
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if (this.size !== collection.size)
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return false;
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for (const [key, value] of this) {
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if (!collection.has(key) || value !== collection.get(key)) {
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return false;
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}
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}
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return true;
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}
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/**
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* The sort method sorts the items of a collection in place and returns it.
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* The sort is not necessarily stable in Node 10 or older.
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* The default sort order is according to string Unicode code points.
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*
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* @param compareFunction - Specifies a function that defines the sort order.
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* If omitted, the collection is sorted according to each character's Unicode code point value, according to the string conversion of each element.
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* @example
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* ```ts
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* collection.sort((userA, userB) => userA.createdTimestamp - userB.createdTimestamp);
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* ```
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*/
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sort(compareFunction = _Collection.defaultSort) {
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const entries = [...this.entries()];
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entries.sort((a, b) => compareFunction(a[1], b[1], a[0], b[0]));
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super.clear();
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for (const [key, value] of entries) {
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super.set(key, value);
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}
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return this;
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}
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/**
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* The intersect method returns a new structure containing items where the keys and values are present in both original structures.
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*
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* @param other - The other Collection to filter against
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*/
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intersect(other) {
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const coll = new this.constructor[Symbol.species]();
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for (const [key, value] of other) {
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if (this.has(key) && Object.is(value, this.get(key))) {
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coll.set(key, value);
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}
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}
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return coll;
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}
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/**
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* The subtract method returns a new structure containing items where the keys and values of the original structure are not present in the other.
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*
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* @param other - The other Collection to filter against
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*/
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subtract(other) {
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const coll = new this.constructor[Symbol.species]();
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for (const [key, value] of this) {
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if (!other.has(key) || !Object.is(value, other.get(key))) {
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coll.set(key, value);
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}
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}
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return coll;
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}
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/**
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* The difference method returns a new structure containing items where the key is present in one of the original structures but not the other.
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*
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* @param other - The other Collection to filter against
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*/
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difference(other) {
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const coll = new this.constructor[Symbol.species]();
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for (const [key, value] of other) {
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if (!this.has(key))
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coll.set(key, value);
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}
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for (const [key, value] of this) {
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if (!other.has(key))
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coll.set(key, value);
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}
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return coll;
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}
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/**
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* Merges two Collections together into a new Collection.
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*
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* @param other - The other Collection to merge with
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* @param whenInSelf - Function getting the result if the entry only exists in this Collection
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* @param whenInOther - Function getting the result if the entry only exists in the other Collection
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* @param whenInBoth - Function getting the result if the entry exists in both Collections
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* @example
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* ```ts
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* // Sums up the entries in two collections.
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* coll.merge(
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* other,
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* x => ({ keep: true, value: x }),
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* y => ({ keep: true, value: y }),
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* (x, y) => ({ keep: true, value: x + y }),
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* );
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* ```
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* @example
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* ```ts
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* // Intersects two collections in a left-biased manner.
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* coll.merge(
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* other,
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* x => ({ keep: false }),
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* y => ({ keep: false }),
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* (x, _) => ({ keep: true, value: x }),
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* );
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* ```
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*/
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merge(other, whenInSelf, whenInOther, whenInBoth) {
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const coll = new this.constructor[Symbol.species]();
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const keys = /* @__PURE__ */ new Set([...this.keys(), ...other.keys()]);
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for (const key of keys) {
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const hasInSelf = this.has(key);
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const hasInOther = other.has(key);
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if (hasInSelf && hasInOther) {
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const result = whenInBoth(this.get(key), other.get(key), key);
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if (result.keep)
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coll.set(key, result.value);
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} else if (hasInSelf) {
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const result = whenInSelf(this.get(key), key);
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if (result.keep)
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coll.set(key, result.value);
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} else if (hasInOther) {
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const result = whenInOther(other.get(key), key);
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if (result.keep)
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coll.set(key, result.value);
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}
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}
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return coll;
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}
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/**
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|
* The sorted method sorts the items of a collection and returns it.
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|
* The sort is not necessarily stable in Node 10 or older.
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|
* The default sort order is according to string Unicode code points.
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|
*
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|
* @param compareFunction - Specifies a function that defines the sort order.
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|
* If omitted, the collection is sorted according to each character's Unicode code point value,
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* according to the string conversion of each element.
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|
* @example
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* ```ts
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* collection.sorted((userA, userB) => userA.createdTimestamp - userB.createdTimestamp);
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* ```
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*/
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sorted(compareFunction = _Collection.defaultSort) {
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return new this.constructor[Symbol.species](this).sort((av, bv, ak, bk) => compareFunction(av, bv, ak, bk));
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}
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toJSON() {
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return [...this.values()];
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}
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static defaultSort(firstValue, secondValue) {
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return Number(firstValue > secondValue) || Number(firstValue === secondValue) - 1;
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}
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/**
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|
* Creates a Collection from a list of entries.
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*
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* @param entries - The list of entries
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* @param combine - Function to combine an existing entry with a new one
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* @example
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* ```ts
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* Collection.combineEntries([["a", 1], ["b", 2], ["a", 2]], (x, y) => x + y);
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* // returns Collection { "a" => 3, "b" => 2 }
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* ```
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*/
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static combineEntries(entries, combine) {
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const coll = new _Collection();
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for (const [key, value] of entries) {
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if (coll.has(key)) {
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coll.set(key, combine(coll.get(key), value, key));
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} else {
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coll.set(key, value);
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}
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}
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return coll;
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}
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};
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// src/index.ts
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var version = "1.5.3";
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export {
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Collection,
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version
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};
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//# sourceMappingURL=index.mjs.map
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