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var __defProp = Object.defineProperty;
var __name = (target, value) => __defProp(target, "name", { value, configurable: true });
// src/collection.ts
var Collection = class _Collection extends Map {
static {
__name(this, "Collection");
}
/**
* 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, defaultValueGenerator) {
if (this.has(key))
return this.get(key);
if (typeof defaultValueGenerator !== "function")
throw new TypeError(`${defaultValueGenerator} is not a function`);
const defaultValue = defaultValueGenerator(key, this);
this.set(key, defaultValue);
return defaultValue;
}
/**
* 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) {
return keys.every((key) => super.has(key));
}
/**
* 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) {
return keys.some((key) => super.has(key));
}
first(amount) {
if (amount === void 0)
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 (amount === void 0)
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 (amount === void 0)
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 (amount === void 0)
return arr[arr.length - 1];
if (amount < 0)
return this.firstKey(amount * -1);
if (!amount)
return [];
return arr.slice(-amount);
}
/**
* 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) {
index = Math.floor(index);
const arr = [...this.values()];
return arr.at(index);
}
/**
* 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) {
index = Math.floor(index);
const arr = [...this.keys()];
return arr.at(index);
}
random(amount) {
const arr = [...this.values()];
if (amount === void 0)
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 (amount === void 0)
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]
);
}
/**
* 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() {
const entries = [...this.entries()].reverse();
this.clear();
for (const [key, value] of entries)
this.set(key, value);
return this;
}
find(fn, thisArg) {
if (typeof fn !== "function")
throw new TypeError(`${fn} is not a function`);
if (thisArg !== void 0)
fn = fn.bind(thisArg);
for (const [key, val] of this) {
if (fn(val, key, this))
return val;
}
return void 0;
}
findKey(fn, thisArg) {
if (typeof fn !== "function")
throw new TypeError(`${fn} is not a function`);
if (thisArg !== void 0)
fn = fn.bind(thisArg);
for (const [key, val] of this) {
if (fn(val, key, this))
return key;
}
return void 0;
}
sweep(fn, thisArg) {
if (typeof fn !== "function")
throw new TypeError(`${fn} is not a function`);
if (thisArg !== void 0)
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 fn !== "function")
throw new TypeError(`${fn} is not a function`);
if (thisArg !== void 0)
fn = fn.bind(thisArg);
const results = new this.constructor[Symbol.species]();
for (const [key, val] of this) {
if (fn(val, key, this))
results.set(key, val);
}
return results;
}
partition(fn, thisArg) {
if (typeof fn !== "function")
throw new TypeError(`${fn} is not a function`);
if (thisArg !== void 0)
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 fn !== "function")
throw new TypeError(`${fn} is not a function`);
if (thisArg !== void 0)
fn = fn.bind(thisArg);
const iter = this.entries();
return Array.from({ length: this.size }, () => {
const [key, value] = iter.next().value;
return fn(value, key, this);
});
}
mapValues(fn, thisArg) {
if (typeof fn !== "function")
throw new TypeError(`${fn} is not a function`);
if (thisArg !== void 0)
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 fn !== "function")
throw new TypeError(`${fn} is not a function`);
if (thisArg !== void 0)
fn = fn.bind(thisArg);
for (const [key, val] of this) {
if (fn(val, key, this))
return true;
}
return false;
}
every(fn, thisArg) {
if (typeof fn !== "function")
throw new TypeError(`${fn} is not a function`);
if (thisArg !== void 0)
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
* {@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, initialValue) {
if (typeof fn !== "function")
throw new TypeError(`${fn} is not a function`);
let accumulator;
const iterator = this.entries();
if (initialValue === void 0) {
if (this.size === 0)
throw new TypeError("Reduce of empty collection with no initial value");
accumulator = iterator.next().value[1];
} else {
accumulator = initialValue;
}
for (const [key, value] of iterator) {
accumulator = fn(accumulator, value, key, this);
}
return accumulator;
}
each(fn, thisArg) {
if (typeof fn !== "function")
throw new TypeError(`${fn} is not a function`);
if (thisArg !== void 0)
fn = fn.bind(thisArg);
for (const [key, value] of this) {
fn(value, key, this);
}
return this;
}
tap(fn, thisArg) {
if (typeof fn !== "function")
throw new TypeError(`${fn} is not a function`);
if (thisArg !== void 0)
fn = fn.bind(thisArg);
fn(this);
return this;
}
/**
* Creates an identical shallow copy of this collection.
*
* @example
* ```ts
* 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 collections - Collections to merge
* @example
* ```ts
* 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 to compare with
* @returns Whether the collections have identical contents
*/
equals(collection) {
if (!collection)
return false;
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 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 = _Collection.defaultSort) {
const entries = [...this.entries()];
entries.sort((a, b) => compareFunction(a[1], b[1], a[0], b[0]));
super.clear();
for (const [key, value] of entries) {
super.set(key, value);
}
return this;
}
/**
* The intersect method returns a new structure containing items where the keys and values are present in both original structures.
*
* @param other - The other Collection to filter against
*/
intersect(other) {
const coll = new this.constructor[Symbol.species]();
for (const [key, value] of other) {
if (this.has(key) && Object.is(value, this.get(key))) {
coll.set(key, value);
}
}
return coll;
}
/**
* The subtract method returns a new structure containing items where the keys and values of the original structure are not present in the other.
*
* @param other - The other Collection to filter against
*/
subtract(other) {
const coll = new this.constructor[Symbol.species]();
for (const [key, value] of this) {
if (!other.has(key) || !Object.is(value, other.get(key))) {
coll.set(key, value);
}
}
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 other - The other Collection to filter against
*/
difference(other) {
const coll = new this.constructor[Symbol.species]();
for (const [key, value] of other) {
if (!this.has(key))
coll.set(key, value);
}
for (const [key, value] of this) {
if (!other.has(key))
coll.set(key, value);
}
return coll;
}
/**
* 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(other, whenInSelf, whenInOther, whenInBoth) {
const coll = new this.constructor[Symbol.species]();
const keys = /* @__PURE__ */ new Set([...this.keys(), ...other.keys()]);
for (const key of keys) {
const hasInSelf = this.has(key);
const hasInOther = other.has(key);
if (hasInSelf && hasInOther) {
const result = whenInBoth(this.get(key), other.get(key), key);
if (result.keep)
coll.set(key, result.value);
} else if (hasInSelf) {
const result = whenInSelf(this.get(key), key);
if (result.keep)
coll.set(key, result.value);
} else if (hasInOther) {
const result = whenInOther(other.get(key), key);
if (result.keep)
coll.set(key, result.value);
}
}
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 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);
* ```
*/
sorted(compareFunction = _Collection.defaultSort) {
return new this.constructor[Symbol.species](this).sort((av, bv, ak, bk) => compareFunction(av, bv, ak, bk));
}
toJSON() {
return [...this.values()];
}
static defaultSort(firstValue, secondValue) {
return Number(firstValue > secondValue) || Number(firstValue === secondValue) - 1;
}
/**
* 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(entries, combine) {
const coll = new _Collection();
for (const [key, value] of entries) {
if (coll.has(key)) {
coll.set(key, combine(coll.get(key), value, key));
} else {
coll.set(key, value);
}
}
return coll;
}
};
// src/index.ts
var version = "1.5.3";
export {
Collection,
version
};
//# sourceMappingURL=index.mjs.map
|