Files
2025-11-30 11:04:41 +01:00

538 lines
26 KiB
TypeScript

/**
* @internal
*/
interface CollectionConstructor {
new (): Collection<unknown, unknown>;
new <Key, Value>(entries?: readonly (readonly [Key, Value])[] | null): Collection<Key, Value>;
new <Key, Value>(iterable: Iterable<readonly [Key, Value]>): Collection<Key, Value>;
readonly prototype: Collection<unknown, unknown>;
readonly [Symbol.species]: CollectionConstructor;
}
/**
* Represents an immutable version of a collection
*/
type ReadonlyCollection<Key, Value> = Omit<Collection<Key, Value>, 'clear' | 'delete' | 'ensure' | 'forEach' | 'get' | 'reverse' | 'set' | 'sort' | 'sweep'> & ReadonlyMap<Key, Value>;
/**
* Separate interface for the constructor so that emitted js does not have a constructor that overwrites itself
*
* @internal
*/
interface Collection<Key, Value> extends Map<Key, Value> {
constructor: CollectionConstructor;
}
/**
* 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.
*
* @typeParam Key - The key type this collection holds
* @typeParam Value - The value type this collection holds
*/
declare class Collection<Key, Value> extends Map<Key, Value> {
/**
* Obtains the value of the given key if it exists, otherwise sets and returns the value provided by the default value generator.
*
* @param key - The key to get if it exists, or set otherwise
* @param defaultValueGenerator - A function that generates the default value
* @example
* ```ts
* collection.ensure(guildId, () => defaultGuildConfig);
* ```
*/
ensure(key: Key, defaultValueGenerator: (key: Key, collection: this) => Value): Value;
/**
* Checks if all of the elements exist in the collection.
*
* @param keys - The keys of the elements to check for
* @returns `true` if all of the elements exist, `false` if at least one does not exist.
*/
hasAll(...keys: Key[]): boolean;
/**
* Checks if any of the elements exist in the collection.
*
* @param keys - The keys of the elements to check for
* @returns `true` if any of the elements exist, `false` if none exist.
*/
hasAny(...keys: Key[]): boolean;
/**
* Obtains the first value(s) in this collection.
*
* @param amount - Amount of values to obtain from the beginning
* @returns A single value if no amount is provided or an array of values, starting from the end if amount is negative
*/
first(): Value | undefined;
first(amount: number): Value[];
/**
* Obtains the first key(s) in this collection.
*
* @param amount - Amount of keys to obtain from the beginning
* @returns A single key if no amount is provided or an array of keys, starting from the end if
* amount is negative
*/
firstKey(): Key | undefined;
firstKey(amount: number): Key[];
/**
* Obtains the last value(s) in this collection.
*
* @param amount - Amount of values to obtain from the end
* @returns A single value if no amount is provided or an array of values, starting from the start if
* amount is negative
*/
last(): Value | undefined;
last(amount: number): Value[];
/**
* Obtains the last key(s) in this collection.
*
* @param amount - Amount of keys to obtain from the end
* @returns A single key if no amount is provided or an array of keys, starting from the start if
* amount is negative
*/
lastKey(): Key | undefined;
lastKey(amount: number): Key[];
/**
* Identical to {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/at | Array.at()}.
* Returns the item at a given index, allowing for positive and negative integers.
* Negative integers count back from the last item in the collection.
*
* @param index - The index of the element to obtain
*/
at(index: number): Value | undefined;
/**
* Identical to {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/at | Array.at()}.
* Returns the key at a given index, allowing for positive and negative integers.
* Negative integers count back from the last item in the collection.
*
* @param index - The index of the key to obtain
*/
keyAt(index: number): Key | undefined;
/**
* Obtains unique random value(s) from this collection.
*
* @param amount - Amount of values to obtain randomly
* @returns A single value if no amount is provided or an array of values
*/
random(): Value | undefined;
random(amount: number): Value[];
/**
* Obtains unique random key(s) from this collection.
*
* @param amount - Amount of keys to obtain randomly
* @returns A single key if no amount is provided or an array
*/
randomKey(): Key | undefined;
randomKey(amount: number): Key[];
/**
* Identical to {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reverse | Array.reverse()}
* but returns a Collection instead of an Array.
*/
reverse(): this;
/**
* Searches for a single item where the given function returns a truthy value. This behaves like
* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find | Array.find()}.
* All collections used in Discord.js are mapped using their `id` property, and if you want to find by id you
* should use the `get` method. See
* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/get | MDN} for details.
*
* @param fn - The function to test with (should return a boolean)
* @param thisArg - Value to use as `this` when executing the function
* @example
* ```ts
* collection.find(user => user.username === 'Bob');
* ```
*/
find<NewValue extends Value>(fn: (value: Value, key: Key, collection: this) => value is NewValue): NewValue | undefined;
find(fn: (value: Value, key: Key, collection: this) => unknown): Value | undefined;
find<This, NewValue extends Value>(fn: (this: This, value: Value, key: Key, collection: this) => value is NewValue, thisArg: This): NewValue | undefined;
find<This>(fn: (this: This, value: Value, key: Key, collection: this) => unknown, thisArg: This): Value | undefined;
/**
* Searches for the key of a single item where the given function returns a truthy value. This behaves like
* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex | Array.findIndex()},
* but returns the key rather than the positional index.
*
* @param fn - The function to test with (should return a boolean)
* @param thisArg - Value to use as `this` when executing the function
* @example
* ```ts
* collection.findKey(user => user.username === 'Bob');
* ```
*/
findKey<NewKey extends Key>(fn: (value: Value, key: Key, collection: this) => key is NewKey): NewKey | undefined;
findKey(fn: (value: Value, key: Key, collection: this) => unknown): Key | undefined;
findKey<This, NewKey extends Key>(fn: (this: This, value: Value, key: Key, collection: this) => key is NewKey, thisArg: This): NewKey | undefined;
findKey<This>(fn: (this: This, value: Value, key: Key, collection: this) => unknown, thisArg: This): Key | undefined;
/**
* Searches for a last item where the given function returns a truthy value. This behaves like
* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findLast | Array.findLast()}.
*
* @param fn - The function to test with (should return a boolean)
* @param thisArg - Value to use as `this` when executing the function
*/
findLast<NewValue extends Value>(fn: (value: Value, key: Key, collection: this) => value is NewValue): NewValue | undefined;
findLast(fn: (value: Value, key: Key, collection: this) => unknown): Value | undefined;
findLast<This, NewValue extends Value>(fn: (this: This, value: Value, key: Key, collection: this) => value is NewValue, thisArg: This): NewValue | undefined;
findLast<This>(fn: (this: This, value: Value, key: Key, collection: this) => unknown, thisArg: This): Value | undefined;
/**
* Searches for the key of a last item where the given function returns a truthy value. This behaves like
* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findLastIndex | Array.findLastIndex()},
* but returns the key rather than the positional index.
*
* @param fn - The function to test with (should return a boolean)
* @param thisArg - Value to use as `this` when executing the function
*/
findLastKey<NewKey extends Key>(fn: (value: Value, key: Key, collection: this) => key is NewKey): NewKey | undefined;
findLastKey(fn: (value: Value, key: Key, collection: this) => unknown): Key | undefined;
findLastKey<This, NewKey extends Key>(fn: (this: This, value: Value, key: Key, collection: this) => key is NewKey, thisArg: This): NewKey | undefined;
findLastKey<This>(fn: (this: This, value: Value, key: Key, collection: this) => unknown, thisArg: This): Key | undefined;
/**
* Removes items that satisfy the provided filter function.
*
* @param fn - Function used to test (should return a boolean)
* @param thisArg - Value to use as `this` when executing the function
* @returns The number of removed entries
*/
sweep(fn: (value: Value, key: Key, collection: this) => unknown): number;
sweep<This>(fn: (this: This, value: Value, key: Key, collection: this) => unknown, thisArg: This): number;
/**
* Identical to
* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter | Array.filter()},
* but returns a Collection instead of an Array.
*
* @param fn - The function to test with (should return a boolean)
* @param thisArg - Value to use as `this` when executing the function
* @example
* ```ts
* collection.filter(user => user.username === 'Bob');
* ```
*/
filter<NewKey extends Key>(fn: (value: Value, key: Key, collection: this) => key is NewKey): Collection<NewKey, Value>;
filter<NewValue extends Value>(fn: (value: Value, key: Key, collection: this) => value is NewValue): Collection<Key, NewValue>;
filter(fn: (value: Value, key: Key, collection: this) => unknown): Collection<Key, Value>;
filter<This, NewKey extends Key>(fn: (this: This, value: Value, key: Key, collection: this) => key is NewKey, thisArg: This): Collection<NewKey, Value>;
filter<This, NewValue extends Value>(fn: (this: This, value: Value, key: Key, collection: this) => value is NewValue, thisArg: This): Collection<Key, NewValue>;
filter<This>(fn: (this: This, value: Value, key: Key, collection: this) => unknown, thisArg: This): Collection<Key, Value>;
/**
* Partitions the collection into two collections where the first collection
* contains the items that passed and the second contains the items that failed.
*
* @param fn - Function used to test (should return a boolean)
* @param thisArg - Value to use as `this` when executing the function
* @example
* ```ts
* const [big, small] = collection.partition(guild => guild.memberCount > 250);
* ```
*/
partition<NewKey extends Key>(fn: (value: Value, key: Key, collection: this) => key is NewKey): [Collection<NewKey, Value>, Collection<Exclude<Key, NewKey>, Value>];
partition<NewValue extends Value>(fn: (value: Value, key: Key, collection: this) => value is NewValue): [Collection<Key, NewValue>, Collection<Key, Exclude<Value, NewValue>>];
partition(fn: (value: Value, key: Key, collection: this) => unknown): [Collection<Key, Value>, Collection<Key, Value>];
partition<This, NewKey extends Key>(fn: (this: This, value: Value, key: Key, collection: this) => key is NewKey, thisArg: This): [Collection<NewKey, Value>, Collection<Exclude<Key, NewKey>, Value>];
partition<This, NewValue extends Value>(fn: (this: This, value: Value, key: Key, collection: this) => value is NewValue, thisArg: This): [Collection<Key, NewValue>, Collection<Key, Exclude<Value, NewValue>>];
partition<This>(fn: (this: This, value: Value, key: Key, collection: this) => unknown, thisArg: This): [Collection<Key, Value>, Collection<Key, Value>];
/**
* Maps each item into a Collection, then joins the results into a single Collection. Identical in behavior to
* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flatMap | Array.flatMap()}.
*
* @param fn - Function that produces a new Collection
* @param thisArg - Value to use as `this` when executing the function
* @example
* ```ts
* collection.flatMap(guild => guild.members.cache);
* ```
*/
flatMap<NewValue>(fn: (value: Value, key: Key, collection: this) => Collection<Key, NewValue>): Collection<Key, NewValue>;
flatMap<NewValue, This>(fn: (this: This, value: Value, key: Key, collection: this) => Collection<Key, NewValue>, thisArg: This): Collection<Key, NewValue>;
/**
* Maps each item to another value into an array. Identical in behavior to
* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map | Array.map()}.
*
* @param fn - Function that produces an element of the new array, taking three arguments
* @param thisArg - Value to use as `this` when executing the function
* @example
* ```ts
* collection.map(user => user.tag);
* ```
*/
map<NewValue>(fn: (value: Value, key: Key, collection: this) => NewValue): NewValue[];
map<This, NewValue>(fn: (this: This, value: Value, key: Key, collection: this) => NewValue, thisArg: This): NewValue[];
/**
* Maps each item to another value into a collection. Identical in behavior to
* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map | Array.map()}.
*
* @param fn - Function that produces an element of the new collection, taking three arguments
* @param thisArg - Value to use as `this` when executing the function
* @example
* ```ts
* collection.mapValues(user => user.tag);
* ```
*/
mapValues<NewValue>(fn: (value: Value, key: Key, collection: this) => NewValue): Collection<Key, NewValue>;
mapValues<This, NewValue>(fn: (this: This, value: Value, key: Key, collection: this) => NewValue, thisArg: This): Collection<Key, NewValue>;
/**
* Checks if there exists an item that passes a test. Identical in behavior to
* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some | Array.some()}.
*
* @param fn - Function used to test (should return a boolean)
* @param thisArg - Value to use as `this` when executing the function
* @example
* ```ts
* collection.some(user => user.discriminator === '0000');
* ```
*/
some(fn: (value: Value, key: Key, collection: this) => unknown): boolean;
some<This>(fn: (this: This, value: Value, key: Key, collection: this) => unknown, thisArg: This): boolean;
/**
* Checks if all items passes a test. Identical in behavior to
* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/every | Array.every()}.
*
* @param fn - Function used to test (should return a boolean)
* @param thisArg - Value to use as `this` when executing the function
* @example
* ```ts
* collection.every(user => !user.bot);
* ```
*/
every<NewKey extends Key>(fn: (value: Value, key: Key, collection: this) => key is NewKey): this is Collection<NewKey, Value>;
every<NewValue extends Value>(fn: (value: Value, key: Key, collection: this) => value is NewValue): this is Collection<Key, NewValue>;
every(fn: (value: Value, key: Key, collection: this) => unknown): boolean;
every<This, NewKey extends Key>(fn: (this: This, value: Value, key: Key, collection: this) => key is NewKey, thisArg: This): this is Collection<NewKey, Value>;
every<This, NewValue extends Value>(fn: (this: This, value: Value, key: Key, collection: this) => value is NewValue, thisArg: This): this is Collection<Key, NewValue>;
every<This>(fn: (this: This, value: Value, key: Key, collection: this) => unknown, thisArg: This): boolean;
/**
* Applies a function to produce a single value. Identical in behavior to
* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce | Array.reduce()}.
*
* @param fn - Function used to reduce, taking four arguments; `accumulator`, `currentValue`, `currentKey`,
* and `collection`
* @param initialValue - Starting value for the accumulator
* @example
* ```ts
* collection.reduce((acc, guild) => acc + guild.memberCount, 0);
* ```
*/
reduce(fn: (accumulator: Value, value: Value, key: Key, collection: this) => Value, initialValue?: Value): Value;
reduce<InitialValue>(fn: (accumulator: InitialValue, value: Value, key: Key, collection: this) => InitialValue, initialValue: InitialValue): InitialValue;
/**
* Applies a function to produce a single value. Identical in behavior to
* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/reduceRight | Array.reduceRight()}.
*
* @param fn - Function used to reduce, taking four arguments; `accumulator`, `value`, `key`, and `collection`
* @param initialValue - Starting value for the accumulator
*/
reduceRight(fn: (accumulator: Value, value: Value, key: Key, collection: this) => Value, initialValue?: Value): Value;
reduceRight<InitialValue>(fn: (accumulator: InitialValue, value: Value, key: Key, collection: this) => InitialValue, initialValue: InitialValue): InitialValue;
/**
* Identical to
* {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map/forEach | Map.forEach()},
* but returns the collection instead of undefined.
*
* @param fn - Function to execute for each element
* @param thisArg - Value to use as `this` when executing the function
* @example
* ```ts
* collection
* .each(user => console.log(user.username))
* .filter(user => user.bot)
* .each(user => console.log(user.username));
* ```
*/
each(fn: (value: Value, key: Key, collection: this) => void): this;
each<This>(fn: (this: This, value: Value, key: Key, collection: this) => void, thisArg: This): this;
/**
* Runs a function on the collection and returns the collection.
*
* @param fn - Function to execute
* @param thisArg - Value to use as `this` when executing the function
* @example
* ```ts
* collection
* .tap(coll => console.log(coll.size))
* .filter(user => user.bot)
* .tap(coll => console.log(coll.size))
* ```
*/
tap(fn: (collection: this) => void): this;
tap<This>(fn: (this: This, collection: this) => void, thisArg: This): this;
/**
* Creates an identical shallow copy of this collection.
*
* @example
* ```ts
* const newColl = someColl.clone();
* ```
*/
clone(): Collection<Key, Value>;
/**
* Combines this collection with others into a new collection. None of the source collections are modified.
*
* @param collections - Collections to merge
* @example
* ```ts
* const newColl = someColl.concat(someOtherColl, anotherColl, ohBoyAColl);
* ```
*/
concat(...collections: ReadonlyCollection<Key, Value>[]): Collection<Key, Value>;
/**
* 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 to compare with
* @returns Whether the collections have identical contents
*/
equals(collection: ReadonlyCollection<Key, Value>): boolean;
/**
* 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 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.
* @example
* ```ts
* collection.sort((userA, userB) => userA.createdTimestamp - userB.createdTimestamp);
* ```
*/
sort(compareFunction?: Comparator<Key, Value>): this;
/**
* The intersection method returns a new collection containing the items where the key is present in both collections.
*
* @param other - The other Collection to filter against
* @example
* ```ts
* const col1 = new Collection([['a', 1], ['b', 2]]);
* const col2 = new Collection([['a', 1], ['c', 3]]);
* const intersection = col1.intersection(col2);
* console.log(col1.intersection(col2));
* // => Collection { 'a' => 1 }
* ```
*/
intersection(other: ReadonlyCollection<Key, any>): Collection<Key, Value>;
/**
* Returns a new collection containing the items where the key is present in either of the collections.
*
* @remarks
*
* If the collections have any items with the same key, the value from the first collection will be used.
* @param other - The other Collection to filter against
* @example
* ```ts
* const col1 = new Collection([['a', 1], ['b', 2]]);
* const col2 = new Collection([['a', 1], ['b', 3], ['c', 3]]);
* const union = col1.union(col2);
* console.log(union);
* // => Collection { 'a' => 1, 'b' => 2, 'c' => 3 }
* ```
*/
union<OtherValue>(other: ReadonlyCollection<Key, OtherValue>): Collection<Key, OtherValue | Value>;
/**
* Returns a new collection containing the items where the key is present in this collection but not the other.
*
* @param other - The other Collection to filter against
* @example
* ```ts
* const col1 = new Collection([['a', 1], ['b', 2]]);
* const col2 = new Collection([['a', 1], ['c', 3]]);
* console.log(col1.difference(col2));
* // => Collection { 'b' => 2 }
* console.log(col2.difference(col1));
* // => Collection { 'c' => 3 }
* ```
*/
difference(other: ReadonlyCollection<Key, any>): Collection<Key, Value>;
/**
* Returns a new collection containing only the items where the keys are present in either collection, but not both.
*
* @param other - The other Collection to filter against
* @example
* ```ts
* const col1 = new Collection([['a', 1], ['b', 2]]);
* const col2 = new Collection([['a', 1], ['c', 3]]);
* const symmetricDifference = col1.symmetricDifference(col2);
* console.log(col1.symmetricDifference(col2));
* // => Collection { 'b' => 2, 'c' => 3 }
* ```
*/
symmetricDifference<OtherValue>(other: ReadonlyCollection<Key, OtherValue>): Collection<Key, OtherValue | Value>;
/**
* Merges two Collections together into a new Collection.
*
* @param other - The other Collection to merge with
* @param whenInSelf - Function getting the result if the entry only exists in this Collection
* @param whenInOther - Function getting the result if the entry only exists in the other Collection
* @param whenInBoth - Function getting the result if the entry exists in both Collections
* @example
* ```ts
* // Sums up the entries in two collections.
* coll.merge(
* other,
* x => ({ keep: true, value: x }),
* y => ({ keep: true, value: y }),
* (x, y) => ({ keep: true, value: x + y }),
* );
* ```
* @example
* ```ts
* // Intersects two collections in a left-biased manner.
* coll.merge(
* other,
* x => ({ keep: false }),
* y => ({ keep: false }),
* (x, _) => ({ keep: true, value: x }),
* );
* ```
*/
merge<OtherValue, ResultValue>(other: ReadonlyCollection<Key, OtherValue>, whenInSelf: (value: Value, key: Key) => Keep<ResultValue>, whenInOther: (valueOther: OtherValue, key: Key) => Keep<ResultValue>, whenInBoth: (value: Value, valueOther: OtherValue, key: Key) => Keep<ResultValue>): Collection<Key, ResultValue>;
/**
* Identical to {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/toReversed | Array.toReversed()}
* but returns a Collection instead of an Array.
*/
toReversed(): Collection<Key, Value>;
/**
* 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 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.
* @example
* ```ts
* collection.sorted((userA, userB) => userA.createdTimestamp - userB.createdTimestamp);
* ```
*/
toSorted(compareFunction?: Comparator<Key, Value>): Collection<Key, Value>;
toJSON(): [Key, Value][];
private static defaultSort;
/**
* Creates a Collection from a list of entries.
*
* @param entries - The list of entries
* @param combine - Function to combine an existing entry with a new one
* @example
* ```ts
* Collection.combineEntries([["a", 1], ["b", 2], ["a", 2]], (x, y) => x + y);
* // returns Collection { "a" => 3, "b" => 2 }
* ```
*/
static combineEntries<Key, Value>(entries: Iterable<[Key, Value]>, combine: (firstValue: Value, secondValue: Value, key: Key) => Value): Collection<Key, Value>;
}
/**
* @internal
*/
type Keep<Value> = {
keep: false;
} | {
keep: true;
value: Value;
};
/**
* @internal
*/
type Comparator<Key, Value> = (firstValue: Value, secondValue: Value, firstKey: Key, secondKey: Key) => number;
/**
* The {@link https://github.com/discordjs/discord.js/blob/main/packages/collection#readme | @discordjs/collection} version
* that you are currently using.
*/
declare const version: string;
export { Collection, type CollectionConstructor, type Comparator, type Keep, type ReadonlyCollection, version };