Files
open-ticket/node_modules/@discordjs/collection/dist/index.js
T
2021-11-14 09:12:55 +01:00

381 lines
64 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Collection = void 0;
/**
* A Map with additional utility methods. This is used throughout discord.js rather than Arrays for anything that has
* an ID, for significantly improved performance and ease-of-use.
* @extends {Map}
* @property {number} size - The amount of elements in this collection.
*/
class Collection extends Map {
/**
* Identical to [Map.get()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/get).
* Gets an element with the specified key, and returns its value, or `undefined` if the element does not exist.
* @param {*} key - The key to get from this collection
* @returns {* | undefined}
*/
get(key) {
return super.get(key);
}
/**
* Identical to [Map.set()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/set).
* Sets a new element in the collection with the specified key and value.
* @param {*} key - The key of the element to add
* @param {*} value - The value of the element to add
* @returns {Collection}
*/
set(key, value) {
return super.set(key, value);
}
/**
* Identical to [Map.has()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/has).
* Checks if an element exists in the collection.
* @param {*} key - The key of the element to check for
* @returns {boolean} `true` if the element exists, `false` if it does not exist.
*/
has(key) {
return super.has(key);
}
/**
* Identical to [Map.delete()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/delete).
* Deletes an element from the collection.
* @param {*} key - The key to delete from the collection
* @returns {boolean} `true` if the element was removed, `false` if the element does not exist.
*/
delete(key) {
return super.delete(key);
}
/**
* Identical to [Map.clear()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/clear).
* Removes all elements from the collection.
* @returns {undefined}
*/
clear() {
return super.clear();
}
/**
* Checks if all of the elements exist in the collection.
* @param {...*} keys - The keys of the elements to check for
* @returns {boolean} `true` if all of the elements exist, `false` if at least one does not exist.
*/
hasAll(...keys) {
return keys.every((k) => super.has(k));
}
/**
* Checks if any of the elements exist in the collection.
* @param {...*} keys - The keys of the elements to check for
* @returns {boolean} `true` if any of the elements exist, `false` if none exist.
*/
hasAny(...keys) {
return keys.some((k) => super.has(k));
}
first(amount) {
if (typeof amount === 'undefined')
return this.values().next().value;
if (amount < 0)
return this.last(amount * -1);
amount = Math.min(this.size, amount);
const iter = this.values();
return Array.from({ length: amount }, () => iter.next().value);
}
firstKey(amount) {
if (typeof amount === 'undefined')
return this.keys().next().value;
if (amount < 0)
return this.lastKey(amount * -1);
amount = Math.min(this.size, amount);
const iter = this.keys();
return Array.from({ length: amount }, () => iter.next().value);
}
last(amount) {
const arr = [...this.values()];
if (typeof amount === 'undefined')
return arr[arr.length - 1];
if (amount < 0)
return this.first(amount * -1);
if (!amount)
return [];
return arr.slice(-amount);
}
lastKey(amount) {
const arr = [...this.keys()];
if (typeof amount === 'undefined')
return arr[arr.length - 1];
if (amount < 0)
return this.firstKey(amount * -1);
if (!amount)
return [];
return arr.slice(-amount);
}
random(amount) {
const arr = [...this.values()];
if (typeof amount === 'undefined')
return arr[Math.floor(Math.random() * arr.length)];
if (!arr.length || !amount)
return [];
return Array.from({ length: Math.min(amount, arr.length) }, () => arr.splice(Math.floor(Math.random() * arr.length), 1)[0]);
}
randomKey(amount) {
const arr = [...this.keys()];
if (typeof amount === 'undefined')
return arr[Math.floor(Math.random() * arr.length)];
if (!arr.length || !amount)
return [];
return Array.from({ length: Math.min(amount, arr.length) }, () => arr.splice(Math.floor(Math.random() * arr.length), 1)[0]);
}
find(fn, thisArg) {
if (typeof thisArg !== 'undefined')
fn = fn.bind(thisArg);
for (const [key, val] of this) {
if (fn(val, key, this))
return val;
}
return undefined;
}
findKey(fn, thisArg) {
if (typeof thisArg !== 'undefined')
fn = fn.bind(thisArg);
for (const [key, val] of this) {
if (fn(val, key, this))
return key;
}
return undefined;
}
sweep(fn, thisArg) {
if (typeof thisArg !== 'undefined')
fn = fn.bind(thisArg);
const previousSize = this.size;
for (const [key, val] of this) {
if (fn(val, key, this))
this.delete(key);
}
return previousSize - this.size;
}
filter(fn, thisArg) {
if (typeof thisArg !== 'undefined')
fn = fn.bind(thisArg);
const results = new this.constructor[Symbol.species]();
for (const [key, val] of this) {
if (fn(val, key, this))
results.set(key, val);
}
return results;
}
partition(fn, thisArg) {
if (typeof thisArg !== 'undefined')
fn = fn.bind(thisArg);
const results = [
new this.constructor[Symbol.species](),
new this.constructor[Symbol.species](),
];
for (const [key, val] of this) {
if (fn(val, key, this)) {
results[0].set(key, val);
}
else {
results[1].set(key, val);
}
}
return results;
}
flatMap(fn, thisArg) {
const collections = this.map(fn, thisArg);
return new this.constructor[Symbol.species]().concat(...collections);
}
map(fn, thisArg) {
if (typeof thisArg !== 'undefined')
fn = fn.bind(thisArg);
const iter = this.entries();
return Array.from({ length: this.size }, () => {
const [key, value] = iter.next().value;
return fn(value, key, this);
});
}
mapValues(fn, thisArg) {
if (typeof thisArg !== 'undefined')
fn = fn.bind(thisArg);
const coll = new this.constructor[Symbol.species]();
for (const [key, val] of this)
coll.set(key, fn(val, key, this));
return coll;
}
some(fn, thisArg) {
if (typeof thisArg !== 'undefined')
fn = fn.bind(thisArg);
for (const [key, val] of this) {
if (fn(val, key, this))
return true;
}
return false;
}
every(fn, thisArg) {
if (typeof thisArg !== 'undefined')
fn = fn.bind(thisArg);
for (const [key, val] of this) {
if (!fn(val, key, this))
return false;
}
return true;
}
/**
* Applies a function to produce a single value. Identical in behavior to
* [Array.reduce()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce).
* @param {Function} fn Function used to reduce, taking four arguments; `accumulator`, `currentValue`, `currentKey`,
* and `collection`
* @param {*} [initialValue] Starting value for the accumulator
* @returns {*}
* @example collection.reduce((acc, guild) => acc + guild.memberCount, 0);
*/
reduce(fn, initialValue) {
let accumulator;
if (typeof initialValue !== 'undefined') {
accumulator = initialValue;
for (const [key, val] of this)
accumulator = fn(accumulator, val, key, this);
return accumulator;
}
let first = true;
for (const [key, val] of this) {
if (first) {
accumulator = val;
first = false;
continue;
}
accumulator = fn(accumulator, val, key, this);
}
// No items iterated.
if (first) {
throw new TypeError('Reduce of empty collection with no initial value');
}
return accumulator;
}
each(fn, thisArg) {
this.forEach(fn, thisArg);
return this;
}
tap(fn, thisArg) {
if (typeof thisArg !== 'undefined')
fn = fn.bind(thisArg);
fn(this);
return this;
}
/**
* Creates an identical shallow copy of this collection.
* @returns {Collection}
* @example const newColl = someColl.clone();
*/
clone() {
return new this.constructor[Symbol.species](this);
}
/**
* Combines this collection with others into a new collection. None of the source collections are modified.
* @param {...Collection} collections Collections to merge
* @returns {Collection}
* @example const newColl = someColl.concat(someOtherColl, anotherColl, ohBoyAColl);
*/
concat(...collections) {
const newColl = this.clone();
for (const coll of collections) {
for (const [key, val] of coll)
newColl.set(key, val);
}
return newColl;
}
/**
* Checks if this collection shares identical items with another.
* This is different to checking for equality using equal-signs, because
* the collections may be different objects, but contain the same data.
* @param {Collection} collection Collection to compare with
* @returns {boolean} Whether the collections have identical contents
*/
equals(collection) {
// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
if (!collection)
return false; // runtime check
if (this === collection)
return true;
if (this.size !== collection.size)
return false;
for (const [key, value] of this) {
if (!collection.has(key) || value !== collection.get(key)) {
return false;
}
}
return true;
}
/**
* The sort method sorts the items of a collection in place and returns it.
* The sort is not necessarily stable in Node 10 or older.
* The default sort order is according to string Unicode code points.
* @param {Function} [compareFunction] Specifies a function that defines the sort order.
* If omitted, the collection is sorted according to each character's Unicode code point value,
* according to the string conversion of each element.
* @returns {Collection}
* @example collection.sort((userA, userB) => userA.createdTimestamp - userB.createdTimestamp);
*/
sort(compareFunction = Collection.defaultSort) {
const entries = [...this.entries()];
entries.sort((a, b) => compareFunction(a[1], b[1], a[0], b[0]));
// Perform clean-up
super.clear();
// Set the new entries
for (const [k, v] of entries) {
super.set(k, v);
}
return this;
}
/**
* The intersect method returns a new structure containing items where the keys are present in both original structures.
* @param {Collection} other The other Collection to filter against
* @returns {Collection}
*/
intersect(other) {
const coll = new this.constructor[Symbol.species]();
for (const [k, v] of other) {
if (this.has(k))
coll.set(k, v);
}
return coll;
}
/**
* The difference method returns a new structure containing items where the key is present in one of the original structures but not the other.
* @param {Collection} other The other Collection to filter against
* @returns {Collection}
*/
difference(other) {
const coll = new this.constructor[Symbol.species]();
for (const [k, v] of other) {
if (!this.has(k))
coll.set(k, v);
}
for (const [k, v] of this) {
if (!other.has(k))
coll.set(k, v);
}
return coll;
}
/**
* The sorted method sorts the items of a collection and returns it.
* The sort is not necessarily stable in Node 10 or older.
* The default sort order is according to string Unicode code points.
* @param {Function} [compareFunction] Specifies a function that defines the sort order.
* If omitted, the collection is sorted according to each character's Unicode code point value,
* according to the string conversion of each element.
* @returns {Collection}
* @example collection.sorted((userA, userB) => userA.createdTimestamp - userB.createdTimestamp);
*/
sorted(compareFunction = Collection.defaultSort) {
return new this.constructor[Symbol.species](this).sort((av, bv, ak, bk) => compareFunction(av, bv, ak, bk));
}
toJSON() {
// toJSON is called recursively by JSON.stringify.
return [...this.values()];
}
static defaultSort(firstValue, secondValue) {
return Number(firstValue > secondValue) || Number(firstValue === secondValue) - 1;
}
}
exports.Collection = Collection;
Collection.default = Collection;
exports.default = Collection;
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interface CollectionConstructor {\n\tnew (): Collection<unknown, unknown>;\n\tnew <K, V>(entries?: ReadonlyArray<readonly [K, V]> | null): Collection<K, V>;\n\tnew <K, V>(iterable: Iterable<readonly [K, V]>): Collection<K, V>;\n\treadonly prototype: Collection<unknown, unknown>;\n\treadonly [Symbol.species]: CollectionConstructor;\n}\n\n/**\n * A Map with additional utility methods. This is used throughout discord.js rather than Arrays for anything that has\n * an ID, for significantly improved performance and ease-of-use.\n * @extends {Map}\n * @property {number} size - The amount of elements in this collection.\n */\nexport class Collection<K, V> extends Map<K, V> {\n\tpublic static readonly default: typeof Collection = Collection;\n\tpublic ['constructor']: CollectionConstructor;\n\n\t/**\n\t * Identical to [Map.get()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/get).\n\t * Gets an element with the specified key, and returns its value, or `undefined` if the element does not exist.\n\t * @param {*} key - The key to get from this collection\n\t * @returns {* | undefined}\n\t */\n\tpublic get(key: K): V | undefined {\n\t\treturn super.get(key);\n\t}\n\n\t/**\n\t * Identical to [Map.set()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/set).\n\t * Sets a new element in the collection with the specified key and value.\n\t * @param {*} key - The key of the element to add\n\t * @param {*} value - The value of the element to add\n\t * @returns {Collection}\n\t */\n\tpublic set(key: K, value: V): this {\n\t\treturn super.set(key, value);\n\t}\n\n\t/**\n\t * Identical to [Map.has()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/has).\n\t * Checks if an element exists in the collection.\n\t * @param {*} key - The key of the element to check for\n\t * @returns {boolean} `true` if the element exists, `false` if it does not exist.\n\t */\n\tpublic has(key: K): boolean {\n\t\treturn super.has(key);\n\t}\n\n\t/**\n\t * Identical to [Map.delete()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/delete).\n\t * Deletes an element from the collection.\n\t * @param {*} key - The key to delete from the collection\n\t * @returns {boolean} `true` if the element was removed, `false` if the element does not exist.\n\t */\n\tpublic delete(key: K): boolean {\n\t\treturn super.delete(key);\n\t}\n\n\t/**\n\t * Identical to [Map.clear()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/clear).\n\t * Removes all elements from the collection.\n\t * @returns {undefined}\n\t */\n\tpublic clear(): void {\n\t\treturn super.clear();\n\t}\n\n\t/**\n\t * Checks if all of the elements exist in the collection.\n\t * @param {...*} keys - The keys of the elements to check for\n\t * @returns {boolean} `true` if all of the elements exist, `false` if at least one does not exist.\n\t */\n\tpublic hasAll(...keys: K[]): boolean {\n\t\treturn keys.every((k) => super.has(k));\n\t}\n\n\t/**\n\t * Checks if any of the elements exist in the collection.\n\t * @param {...*} keys - The keys of the elements to check for\n\t * @returns {boolean} `true` if any of the elements exist, `false` if none exist.\n\t */\n\tpublic hasAny(...keys: K[]): boolean {\n\t\treturn keys.some((k) => super.has(k));\n\t}\n\n\t/**\n\t * Obtains the first value(s) in this collection.\n\t * @param {number} [amount] Amount of values to obtain from the beginning\n\t * @returns {*|Array<*>} A single value if no amount is provided or an array of values, starting from the end if\n\t * amount is negative\n\t */\n\tpublic first(): V | undefined;\n\tpublic first(amount: number): V[];\n\tpublic first(amount?: number): V | V[] | undefined {\n\t\tif (typeof amount === 'undefined') return this.values().next().value;\n\t\tif (amount < 0) return this.last(amount * -1);\n\t\tamount = Math.min(this.size, amount);\n\t\tconst iter = this.values();\n\t\treturn Array.from({ length: amount }, (): V => iter.next().value);\n\t}\n\n\t/**\n\t * Obtains the first key(s) in this collection.\n\t * @param {number} [amount] Amount of keys to obtain from the beginning\n\t * @returns {*|Array<*>} A single key if no amount is provided or an array of keys, starting from the end if\n\t * amount is negative\n\t */\n\tpublic firstKey(): K | undefined;\n\tpublic firstKey(amount: number): K[];\n\tpublic firstKey(amount?: number): K | K[] | undefined {\n\t\tif (typeof amount === 'undefined') return this.keys().next().value;\n\t\tif (amount < 0) return this.lastKey(amount * -1);\n\t\tamount = Math.min(this.size, amount);\n\t\tconst iter = this.keys();\n\t\treturn Array.from({ length: amount }, (): K => iter.next().value);\n\t}\n\n\t/**\n\t * Obtains the last value(s) in this collection.\n\t * @param {number} [amount] Amount of values to obtain from the end\n\t * @returns {*|Array<*>} A single value if no amount is provided or an array of values, starting from the start if\n\t * amount is negative\n\t */\n\tpublic last(): V | undefined;\n\tpublic last(amount: number): V[];\n\tpublic last(amount?: number): V | V[] | undefined {\n\t\tconst arr = [...this.values()];\n\t\tif (typeof amount === 'undefined') return arr[arr.length - 1];\n\t\tif (amount < 0) return this.first(amount * -1);\n\t\tif (!amount) return [];\n\t\treturn arr.slice(-amount);\n\t}\n\n\t/**\n\t * Obtains the last key(s) in this collection.\n\t * @param {number} [amount] Amount of keys to obtain from the end\n\t * @returns {*|Array<*>} A single key if no amount is provided or an array of keys, starting from the start if\n\t * amount is negative\n\t */\n\tpublic lastKey(): K | undefined;\n\tpublic lastKey(amount: number): K[];\n\tpublic lastKey(amount?: number): K | K[] | undefined {\n\t\tconst arr = [...this.keys()];\n\t\tif (typeof amount === 'undefined') return arr[arr.length - 1];\n\t\tif (amount < 0) return this.firstKey(amount * -1);\n\t\tif (!amount) return [];\n\t\treturn arr.slice(-amount);\n\t}\n\n\t/**\n\t * Obtains unique random value(s) from this collection.\n\t * @param {number} [amount] Amount of values to obtain randomly\n\t * @returns {*|Array<*>} A single value if no amount is provided or an array of values\n\t */\n\tpublic random(): V;\n\tpublic random(amount: number): V[];\n\tpublic random(amount?: number): V | V[] {\n\t\tconst arr = [...this.values()];\n\t\tif (typeof amount === 'undefined') return arr[Math.floor(Math.random() * arr.length)];\n\t\tif (!arr.length || !amount) return [];\n\t\treturn Array.from(\n\t\t\t{ length: Math.min(amount, arr.length) },\n\t\t\t(): V => arr.splice(Math.floor(Math.random() * arr.length), 1)[0],\n\t\t);\n\t}\n\n\t/**\n\t * Obtains unique random key(s) from this collection.\n\t * @param {number} [amount] Amount of keys to obtain randomly\n\t * @returns {*|Array<*>} A single key if no amount is provided or an array\n\t */\n\tpublic randomKey(): K;\n\tpublic randomKey(amount: number): K[];\n\tpublic randomKey(amount?: number): K | K[] {\n\t\tconst arr = [...this.keys()];\n\t\tif (typeof amount === 'undefined') return arr[Math.floor(Math.random() * arr.length)];\n\t\tif (!arr.length || !amount) return [];\n\t\treturn Array.from(\n\t\t\t{ length: Math.min(amount, arr.length) },\n\t\t\t(): K => arr.splice(Math.floor(Math.random() * arr.length), 1)[0],\n\t\t);\n\t}\n\n\t/**\n\t * Searches for a single item where the given function returns a truthy value. This behaves like\n\t * [Array.find()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find).\n\t * <warn>All collections used in Discord.js are mapped using their `id` property, and if you want to find by id you\n\t * should use the `get` method. See\n\t * [MDN](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/get) for details.</warn>\n\t * @param {Function} fn The function to test with (should return boolean)\n\t * @param {*} [thisArg] Value to use as `this` when executing function\n\t * @returns {*}\n\t * @example collection.find(user => user.username === 'Bob');\n\t */\n\tpublic find<V2 extends V>(fn: (value: V, key: K, collection: this) => value is V2): V2 | undefined;\n\tpublic find(fn: (value: V, key: K, collection: this) => boolean): V | undefined;\n\tpublic find<This, V2 extends V>(\n\t\tfn: (this: This, value: V, key: K, collection: this) => value is V2,\n\t\tthisArg: This,\n\t): V2 | undefined;\n\tpublic find<This>(fn: (this: This, value: V, key: K, collection: this) => boolean, thisArg: This): V | undefined;\n\tpublic find(fn: (value: V, key: K, collection: this) => boolean, thisArg?: unknown): V | undefined {\n\t\tif (typeof thisArg !== 'undefined') fn = fn.bind(thisArg);\n\t\tfor (const [key, val] of this) {\n\t\t\tif (fn(val, key, this)) return val;\n\t\t}\n\t\treturn undefined;\n\t}\n\n\t/**\n\t * Searches for the key of a single item where the given function returns a truthy value. This behaves like\n\t * [Array.findIndex()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex),\n\t * but returns the key rather than the positional index.\n\t * @param {Function} fn The function to test with (should return boolean)\n\t * @param {*} [thisArg] Value to use as `this` when executing function\n\t * @returns {*}\n\t * @example collection.findKey(user => user.username === 'Bob');\n\t */\n\tpublic findKey<K2 extends K>(fn: (value: V, key: K, collection: this) => key is K2): K2 | undefined;\n\tpublic findKey(fn: (value: V, key: K, collection: this) => boolean): K | undefined;\n\tpublic findKey<This, K2 extends K>(\n\t\tfn: (this: This, value: V, key: K, collection: this) => key is K2,\n\t\tthisArg: This,\n\t): K2 | undefined;\n\tpublic findKey<This>(fn: (this: This, value: V, key: K, collection: this) => boolean, thisArg: This): K | undefined;\n\tpublic findKey(fn: (value: V, key: K, collection: this) => boolean, thisArg?: unknown): K | undefined {\n\t\tif (typeof thisArg !== 'undefined') fn = fn.bind(thisArg);\n\t\tfor (const [key, val] of this) {\n\t\t\tif (fn(val, key, this)) return key;\n\t\t}\n\t\treturn undefined;\n\t}\n\n\t/**\n\t * Removes items that satisfy the provided filter function.\n\t * @param {Function} fn Function used to test (should return a boolean)\n\t * @param {*} [thisArg] Value to use as `this` when executing function\n\t * @returns {number} The number of removed entries\n\t */\n\tpublic sweep(fn: (value: V, key: K, collection: this) => boolean): number;\n\tpublic sweep<T>(fn: (this: T, value: V, key: K, collection: this) => boolean, thisArg: T): number;\n\tpublic sweep(fn: (value: V, key: K, collection: this) => boolean, thisArg?: unknown): number {\n\t\tif (typeof thisArg !== 'undefined') fn = fn.bind(thisArg);\n\t\tconst previousSize = this.size;\n\t\tfor (const [key, val] of this) {\n\t\t\tif (fn(val, key, this)) this.delete(key);\n\t\t}\n\t\treturn previousSize - this.size;\n\t}\n\n\t/**\n\t * Identical to\n\t * [Array.filter()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter),\n\t * but returns a Collection instead of an Array.\n\t * @param {Function} fn The function to test with (should return boolean)\n\t * @param {*} [thisArg] Value to use as `this` when executing function\n\t * @returns {Collection}\n\t * @example collection.filter(user => user.username === 'Bob');\n\t */\n\tpublic filter<K2 extends K>(fn: (value: V, key: K, collection: this) => key is K2): Collection<K2, V>;\n\tpublic filter<V2 extends V>(fn: (value: V, key: K, collection: this) => value is V2): Collection<K, V2>;\n\tpublic filter(fn: (value: V, key: K, collection: this) => boolean): Collection<K, V>;\n\tpublic filter<This, K2 extends K>(\n\t\tfn: (this: This, value: V, key: K, collection: this) => key is K2,\n\t\tthisArg: This,\n\t): Collection<K2, V>;\n\tpublic filter<This, V2 extends V>(\n\t\tfn: (this: This, value: V, key: K, collection: this) => value is V2,\n\t\tthisArg: This,\n\t): Collection<K, V2>;\n\tpublic filter<This>(fn: (this: This, value: V, key: K, collection: this) => boolean, thisArg: This): Collection<K, V>;\n\tpublic filter(fn: (value: V, key: K, collection: this) => boolean, thisArg?: unknown): Collection<K, V> {\n\t\tif (typeof thisArg !== 'undefined') fn = fn.bind(thisArg);\n\t\tconst results = new this.constructor[Symbol.species]<K, V>();\n\t\tfor (const [key, val] of this) {\n\t\t\tif (fn(val, key, this)) results.set(key, val);\n\t\t}\n\t\treturn results;\n\t}\n\n\t/**\n\t * Partitions the collection into two collections where the first collection\n\t * contains the items that passed and the second contains the items that failed.\n\t * @param {Function} fn Function used to test (should return a boolean)\n\t * @param {*} [thisArg] Value to use as `this` when executing function\n\t * @returns {Collection[]}\n\t * @example const [big, small] = collection.partition(guild => guild.memberCount > 250);\n\t */\n\tpublic partition<K2 extends K>(\n\t\tfn: (value: V, key: K, collection: this) => key is K2,\n\t): [Collection<K2, V>, Collection<Exclude<K, K2>, V>];\n\tpublic partition<V2 extends V>(\n\t\tfn: (value: V, key: K, collection: this) => value is V2,\n\t): [Collection<K, V2>, Collection<K, Exclude<V, V2>>];\n\tpublic partition(fn: (value: V, key: K, collection: this) => boolean): [Collection<K, V>, Collection<K, V>];\n\tpublic partition<This, K2 extends K>(\n\t\tfn: (this: This, value: V, key: K, collection: this) => key is K2,\n\t\tthisArg: This,\n\t): [Collection<K2, V>, Collection<Exclude<K, K2>, V>];\n\tpublic partition<This, V2 extends V>(\n\t\tfn: (this: This, value: V, key: K, collection: this) => value is V2,\n\t\tthisArg: This,\n\t): [Collection<K, V2>, Collection<K, Exclude<V, V2>>];\n\tpublic partition<This>(\n\t\tfn: (this: This, value: V, key: K, collection: this) => boolean,\n\t\tthisArg: This,\n\t): [Collection<K, V>, Collection<K, V>];\n\tpublic partition(\n\t\tfn: (value: V, key: K, collection: this) => boolean,\n\t\tthisArg?: unknown,\n\t): [Collection<K, V>, Collection<K, V>] {\n\t\tif (typeof thisArg !== 'undefined') fn = fn.bind(thisArg);\n\t\tconst results: [Collection<K, V>, Collection<K, V>] = [\n\t\t\tnew this.constructor[Symbol.species]<K, V>(),\n\t\t\tnew this.constructor[Symbol.species]<K, V>(),\n\t\t];\n\t\tfor (const [key, val] of this) {\n\t\t\tif (fn(val, key, this)) {\n\t\t\t\tresults[0].set(key, val);\n\t\t\t} else {\n\t\t\t\tresults[1].set(key, val);\n\t\t\t}\n\t\t}\n\t\treturn results;\n\t}\n\n\t/**\n\t * Maps each item into a Collection, then joins the results into a single Collection. Identical in behavior to\n\t * [Array.flatMap()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flatMap).\n\t * @param {Function} fn Function that produces a new Collection\n\t * @param {*} [thisArg] Value to use as `this` when executing function\n\t * @returns {Collection}\n\t * @example collection.flatMap(guild => guild.members.cache);\n\t */\n\tpublic flatMap<T>(fn: (value: V, key: K, collection: this) => Collection<K, T>): Collection<K, T>;\n\tpublic flatMap<T, This>(\n\t\tfn: (this: This, value: V, key: K, collection: this) => Collection<K, T>,\n\t\tthisArg: This,\n\t): Collection<K, T>;\n\tpublic flatMap<T>(fn: (value: V, key: K, collection: this) => Collection<K, T>, thisArg?: unknown): Collection<K, T> {\n\t\tconst collections = this.map(fn, thisArg);\n\t\treturn new this.constructor[Symbol.species]<K, T>().concat(...collections);\n\t}\n\n\t/**\n\t * Maps each item to another value into an array. Identical in behavior to\n\t * [Array.map()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map).\n\t * @param {Function} fn Function that produces an element of the new array, taking three arguments\n\t * @param {*} [thisArg] Value to use as `this` when executing function\n\t * @returns {Array}\n\t * @example collection.map(user => user.tag);\n\t */\n\tpublic map<T>(fn: (value: V, key: K, collection: this) => T): T[];\n\tpublic map<This, T>(fn: (this: This, value: V, key: K, collection: this) => T, thisArg: This): T[];\n\tpublic map<T>(fn: (value: V, key: K, collection: this) => T, thisArg?: unknown): T[] {\n\t\tif (typeof thisArg !== 'undefined') fn = fn.bind(thisArg);\n\t\tconst iter = this.entries();\n\t\treturn Array.from({ length: this.size }, (): T => {\n\t\t\tconst [key, value] = iter.next().value;\n\t\t\treturn fn(value, key, this);\n\t\t});\n\t}\n\n\t/**\n\t * Maps each item to another value into a collection. Identical in behavior to\n\t * [Array.map()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map).\n\t * @param {Function} fn Function that produces an element of the new collection, taking three arguments\n\t * @param {*} [thisArg] Value to use as `this` when executing function\n\t * @returns {Collection}\n\t * @example collection.mapValues(user => user.tag);\n\t */\n\tpublic mapValues<T>(fn: (value: V, key: K, collection: this) => T): Collection<K, T>;\n\tpublic mapValues<This, T>(fn: (this: This, value: V, key: K, collection: this) => T, thisArg: This): Collection<K, T>;\n\tpublic mapValues<T>(fn: (value: V, key: K, collection: this) => T, thisArg?: unknown): Collection<K, T> {\n\t\tif (typeof thisArg !== 'undefined') fn = fn.bind(thisArg);\n\t\tconst coll = new this.constructor[Symbol.species]<K, T>();\n\t\tfor (const [key, val] of this) coll.set(key, fn(val, key, this));\n\t\treturn coll;\n\t}\n\n\t/**\n\t * Checks if there exists an item that passes a test. Identical in behavior to\n\t * [Array.some()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some).\n\t * @param {Function} fn Function used to test (should return a boolean)\n\t * @param {*} [thisArg] Value to use as `this` when executing function\n\t * @returns {boolean}\n\t * @example collection.some(user => user.discriminator === '0000');\n\t */\n\tpublic some(fn: (value: V, key: K, collection: this) => boolean): boolean;\n\tpublic some<T>(fn: (this: T, value: V, key: K, collection: this) => boolean, thisArg: T): boolean;\n\tpublic some(fn: (value: V, key: K, collection: this) => boolean, thisArg?: unknown): boolean {\n\t\tif (typeof thisArg !== 'undefined') fn = fn.bind(thisArg);\n\t\tfor (const [key, val] of this) {\n\t\t\tif (fn(val, key, this)) return true;\n\t\t}\n\t\treturn false;\n\t}\n\n\t/**\n\t * Checks if all items passes a test. Identical in behavior to\n\t * [Array.every()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every).\n\t * @param {Function} fn Function used to test (should return a boolean)\n\t * @param {*} [thisArg] Value to use as `this` when executing function\n\t * @returns {boolean}\n\t * @example collection.every(user => !user.bot);\n\t */\n\tpublic every<K2 extends K>(fn: (value: V, key: K, collection: this) => key is K2): this is Collection<K2, V>;\n\tpublic every<V2 extends V>(fn: (value: V, key: K, collection: this) => value is V2): this is Collection<K, V2>;\n\tpublic every(fn: (value: V, key: K, collection: this) => boolean): boolean;\n\tpublic every<This, K2 extends K>(\n\t\tfn: (this: This, value: V, key: K, collection: this) => key is K2,\n\t\tthisArg: This,\n\t): this is Collection<K2, V>;\n\tpublic every<This, V2 extends V>(\n\t\tfn: (this: This, value: V, key: K, collection: this) => value is V2,\n\t\tthisArg: This,\n\t): this is Collection<K, V2>;\n\tpublic every<This>(fn: (this: This, value: V, key: K, collection: this) => boolean, thisArg: This): boolean;\n\tpublic every(fn: (value: V, key: K, collection: this) => boolean, thisArg?: unknown): boolean {\n\t\tif (typeof thisArg !== 'undefined') fn = fn.bind(thisArg);\n\t\tfor (const [key, val] of this) {\n\t\t\tif (!fn(val, key, this)) return false;\n\t\t}\n\t\treturn true;\n\t}\n\n\t/**\n\t * Applies a function to produce a single value. Identical in behavior to\n\t * [Array.reduce()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce).\n\t * @param {Function} fn Function used to reduce, taking four arguments; `accumulator`, `currentValue`, `currentKey`,\n\t * and `collection`\n\t * @param {*} [initialValue] Starting value for the accumulator\n\t * @returns {*}\n\t * @example collection.reduce((acc, guild) => acc + guild.memberCount, 0);\n\t */\n\tpublic reduce<T>(fn: (accumulator: T, value: V, key: K, collection: this) => T, initialValue?: T): T {\n\t\tlet accumulator!: T;\n\n\t\tif (typeof initialValue !== 'undefined') {\n\t\t\taccumulator = initialValue;\n\t\t\tfor (const [key, val] of this) accumulator = fn(accumulator, val, key, this);\n\t\t\treturn accumulator;\n\t\t}\n\t\tlet first = true;\n\t\tfor (const [key, val] of this) {\n\t\t\tif (first) {\n\t\t\t\taccumulator = val as unknown as T;\n\t\t\t\tfirst = false;\n\t\t\t\tcontinue;\n\t\t\t}\n\t\t\taccumulator = fn(accumulator, val, key, this);\n\t\t}\n\n\t\t// No items iterated.\n\t\tif (first) {\n\t\t\tthrow new TypeError('Reduce of empty collection with no initial value');\n\t\t}\n\n\t\treturn accumulator;\n\t}\n\n\t/**\n\t * Identical to\n\t * [Map.forEach()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/forEach),\n\t * but returns the collection instead of undefined.\n\t * @param {Function} fn Function to execute for each element\n\t * @param {*} [thisArg] Value to use as `this` when executing function\n\t * @returns {Collection}\n\t * @example\n\t * collection\n\t *  .each(user => console.log(user.username))\n\t *  .filter(user => user.bot)\n\t *  .each(user => console.log(user.username));\n\t */\n\tpublic each(fn: (value: V, key: K, collection: this) => void): this;\n\tpublic each<T>(fn: (this: T, value: V, key: K, collection: this) => void, thisArg: T): this;\n\tpublic each(fn: (value: V, key: K, collection: this) => void, thisArg?: unknown): this {\n\t\tthis.forEach(fn as (value: V, key: K, map: Map<K, V>) => void, thisArg);\n\t\treturn this;\n\t}\n\n\t/**\n\t * Runs a function on the collection and returns the collection.\n\t * @param {Function} fn Function to execute\n\t * @param {*} [thisArg] Value to use as `this` when executing function\n\t * @returns {Collection}\n\t * @example\n\t * collection\n\t *  .tap(coll => console.log(coll.size))\n\t *  .filter(user => user.bot)\n\t *  .tap(coll => console.log(coll.size))\n\t */\n\tpublic tap(fn: (collection: this) => void): this;\n\tpublic tap<T>(fn: (this: T, collection: this) => void, thisArg: T): this;\n\tpublic tap(fn: (collection: this) => void, thisArg?: unknown): this {\n\t\tif (typeof thisArg !== 'undefined') fn = fn.bind(thisArg);\n\t\tfn(this);\n\t\treturn this;\n\t}\n\n\t/**\n\t * Creates an identical shallow copy of this collection.\n\t * @returns {Collection}\n\t * @example const newColl = someColl.clone();\n\t */\n\tpublic clone(): Collection<K, V> {\n\t\treturn new this.constructor[Symbol.species](this);\n\t}\n\n\t/**\n\t * Combines this collection with others into a new collection. None of the source collections are modified.\n\t * @param {...Collection} collections Collections to merge\n\t * @returns {Collection}\n\t * @example const newColl = someColl.concat(someOtherColl, anotherColl, ohBoyAColl);\n\t */\n\tpublic concat(...collections: Collection<K, V>[]): Collection<K, V> {\n\t\tconst newColl = this.clone();\n\t\tfor (const coll of collections) {\n\t\t\tfor (const [key, val] of coll) newColl.set(key, val);\n\t\t}\n\t\treturn newColl;\n\t}\n\n\t/**\n\t * Checks if this collection shares identical items with another.\n\t * This is different to checking for equality using equal-signs, because\n\t * the collections may be different objects, but contain the same data.\n\t * @param {Collection} collection Collection to compare with\n\t * @returns {boolean} Whether the collections have identical contents\n\t */\n\tpublic equals(collection: Collection<K, V>): boolean {\n\t\t// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition\n\t\tif (!collection) return false; // runtime check\n\t\tif (this === collection) return true;\n\t\tif (this.size !== collection.size) return false;\n\t\tfor (const [key, value] of this) {\n\t\t\tif (!collection.has(key) || value !== collection.get(key)) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\t\treturn true;\n\t}\n\n\t/**\n\t * The sort method sorts the items of a collection in place and returns it.\n\t * The sort is not necessarily stable in Node 10 or older.\n\t * The default sort order is according to string Unicode code points.\n\t * @param {Function} [compareFunction] Specifies a function that defines the sort order.\n\t * If omitted, the collection is sorted according to each character's Unicode code point value,\n\t * according to the string conversion of each element.\n\t * @returns {Collection}\n\t * @example collection.sort((userA, userB) => userA.createdTimestamp - userB.createdTimestamp);\n\t */\n\tpublic sort(compareFunction: Comparator<K, V> = Collection.defaultSort): this {\n\t\tconst entries = [...this.entries()];\n\t\tentries.sort((a, b): number => compareFunction(a[1], b[1], a[0], b[0]));\n\n\t\t// Perform clean-up\n\t\tsuper.clear();\n\n\t\t// Set the new entries\n\t\tfor (const [k, v] of entries) {\n\t\t\tsuper.set(k, v);\n\t\t}\n\t\treturn this;\n\t}\n\n\t/**\n\t * The intersect method returns a new structure containing items where the keys are present in both original structures.\n\t * @param {Collection} other The other Collection to filter against\n\t * @returns {Collection}\n\t */\n\tpublic intersect(other: Collection<K, V>): Collection<K, V> {\n\t\tconst coll = new this.constructor[Symbol.species]<K, V>();\n\t\tfor (const [k, v] of other) {\n\t\t\tif (this.has(k)) coll.set(k, v);\n\t\t}\n\t\treturn coll;\n\t}\n\n\t/**\n\t * The difference method returns a new structure containing items where the key is present in one of the original structures but not the other.\n\t * @param {Collection} other The other Collection to filter against\n\t * @returns {Collection}\n\t */\n\tpublic difference(other: Collection<K, V>): Collection<K, V> {\n\t\tconst coll = new this.constructor[Symbol.species]<K, V>();\n\t\tfor (const [k, v] of other) {\n\t\t\tif (!this.has(k)) coll.set(k, v);\n\t\t}\n\t\tfor (const [k, v] of this) {\n\t\t\tif (!other.has(k)) coll.set(k, v);\n\t\t}\n\t\treturn coll;\n\t}\n\n\t/**\n\t * The sorted method sorts the items of a collection and returns it.\n\t * The sort is not necessarily stable in Node 10 or older.\n\t * The default sort order is according to string Unicode code points.\n\t * @param {Function} [compareFunction] Specifies a function that defines the sort order.\n\t * If omitted, the collection is sorted according to each character's Unicode code point value,\n\t * according to the string conversion of each element.\n\t * @returns {Collection}\n\t * @example collection.sorted((userA, userB) => userA.createdTimestamp - userB.createdTimestamp);\n\t */\n\tpublic sorted(compareFunction: Comparator<K, V> = Collection.defaultSort): Collection<K, V> {\n\t\treturn new this.constructor[Symbol.species](this).sort((av, bv, ak, bk) => compareFunction(av, bv, ak, bk));\n\t}\n\n\tpublic toJSON() {\n\t\t// toJSON is called recursively by JSON.stringify.\n\t\treturn [...this.values()];\n\t}\n\n\tprivate static defaultSort<V>(firstValue: V, secondValue: V): number {\n\t\treturn Number(firstValue > secondValue) || Number(firstValue === secondValue) - 1;\n\t}\n}\n\nexport type Comparator<K, V> = (firstValue: V, secondValue: V, firstKey: K, secondKey: K) => number;\n\nexport default Collection;\n"]}