mirror of
https://github.com/denoland/deno.git
synced 2024-11-24 15:19:26 -05:00
86 lines
3.1 KiB
TypeScript
86 lines
3.1 KiB
TypeScript
|
/*! *****************************************************************************
|
||
|
|
Copyright (c) Microsoft Corporation. All rights reserved.
|
||
|
|
Licensed under the Apache License, Version 2.0 (the "License"); you may not use
|
||
|
|
this file except in compliance with the License. You may obtain a copy of the
|
||
|
|
License at http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
|
||
|
|
THIS CODE IS PROVIDED ON AN *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
||
|
|
KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
|
||
|
|
WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
|
||
|
|
MERCHANTABLITY OR NON-INFRINGEMENT.
|
||
|
|
|
||
|
|
See the Apache Version 2.0 License for specific language governing permissions
|
||
|
|
and limitations under the License.
|
||
|
|
***************************************************************************** */
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/// <reference no-default-lib="true"/>
|
||
|
|
|
||
|
|
|
||
|
|
type FlatArray<Arr, Depth extends number> = {
|
||
|
|
"done": Arr,
|
||
|
|
"recur": Arr extends ReadonlyArray<infer InnerArr>
|
||
|
|
? FlatArray<InnerArr, [-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20][Depth]>
|
||
|
|
: Arr
|
||
|
|
}[Depth extends -1 ? "done" : "recur"];
|
||
|
|
|
||
|
|
interface ReadonlyArray<T> {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Calls a defined callback function on each element of an array. Then, flattens the result into
|
||
|
|
* a new array.
|
||
|
|
* This is identical to a map followed by flat with depth 1.
|
||
|
|
*
|
||
|
|
* @param callback A function that accepts up to three arguments. The flatMap method calls the
|
||
|
|
* callback function one time for each element in the array.
|
||
|
|
* @param thisArg An object to which the this keyword can refer in the callback function. If
|
||
|
|
* thisArg is omitted, undefined is used as the this value.
|
||
|
|
*/
|
||
|
|
flatMap<U, This = undefined> (
|
||
|
|
callback: (this: This, value: T, index: number, array: T[]) => U | ReadonlyArray<U>,
|
||
|
|
thisArg?: This
|
||
|
|
): U[]
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns a new array with all sub-array elements concatenated into it recursively up to the
|
||
|
|
* specified depth.
|
||
|
|
*
|
||
|
|
* @param depth The maximum recursion depth
|
||
|
|
*/
|
||
|
|
flat<A, D extends number = 1>(
|
||
|
|
this: A,
|
||
|
|
depth?: D
|
||
|
|
): FlatArray<A, D>[]
|
||
|
|
}
|
||
|
|
|
||
|
|
interface Array<T> {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Calls a defined callback function on each element of an array. Then, flattens the result into
|
||
|
|
* a new array.
|
||
|
|
* This is identical to a map followed by flat with depth 1.
|
||
|
|
*
|
||
|
|
* @param callback A function that accepts up to three arguments. The flatMap method calls the
|
||
|
|
* callback function one time for each element in the array.
|
||
|
|
* @param thisArg An object to which the this keyword can refer in the callback function. If
|
||
|
|
* thisArg is omitted, undefined is used as the this value.
|
||
|
|
*/
|
||
|
|
flatMap<U, This = undefined> (
|
||
|
|
callback: (this: This, value: T, index: number, array: T[]) => U | ReadonlyArray<U>,
|
||
|
|
thisArg?: This
|
||
|
|
): U[]
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns a new array with all sub-array elements concatenated into it recursively up to the
|
||
|
|
* specified depth.
|
||
|
|
*
|
||
|
|
* @param depth The maximum recursion depth
|
||
|
|
*/
|
||
|
|
flat<A, D extends number = 1>(
|
||
|
|
this: A,
|
||
|
|
depth?: D
|
||
|
|
): FlatArray<A, D>[]
|
||
|
|
}
|