extra-generator

Install

npm install --save extra-generator
# or
yarn add extra-generator

API

handleYieldedValues

function handleYieldedValues<T, Return, Next>(
  generator: Generator<T, Return, Next>
, fn: (value: T, index: number) => Next
): Return

handleYieldedValuesAsync

function handleYieldedValuesAsync<T, Return, Next>(
  generator: Generator<T, Return, Next>
, fn: (value: T, index: number) => PromiseLike<Next>
): Promise<Return>
function handleYieldedValuesAsync<T, Return, Next>(
  generator: AsyncGenerator<T, Return, Next>
, fn: (value: T, index: number) => Awaitable<Next>
): Promise<Return>

of

function of<T>(val: T): IterableIterator<T>

of(1) // [1]

repeat

function repeat<T>(val: T, times: number = Infinity): IterableIterator<T>

repeat(1) // [1, 1, 1, ...]
repeat(1, 3) // [1, 1, 1]
repeat(1, 0) // []

spawn

function spawn<T>(create: (num: number) => T, times: number = Infinity): IterableIterator<T>

spawn(x => x * 2) // [2, 4, 6, ...]
spawn(x => x * 2, 3) // [2, 4, 6]
spawn(x => x * 2, 0) // []

countdown

function countdown(begin: number, end: number): IterableIterator<number>

countdown(2, -2) // [2, 1, 0, -1, -2]
countdown(1, 1) // [1]
countdown(0, 1) // []

countup

function countup(begin: number, end: number): IterableIterator<number>

countup(-2, 2) // [-2, -1, 0, 1, 2]
countup(1, 1) // [1]
countup(1, 0) // []

range

function range(
  start: number
, end: number
, step: number = 1 // step > 0
, inclusive: boolean = false
): IterableIterator<number>

range(1, 1) // []
range(-2, 2) // [-2, -1, 0, 1]
range(2, -2) // [2, 1, 0, -1]
range(1, -1, 0.5) // [1, 0.5, 0, -0.5]
range(2, -2, 0) // throw Error
range(2, -2, -0.5) // throw Error

stringifyJSONStream

function stringifyJSONStream<T>(iterable: Iterable<T>): Iterable<string>

stringifyJSONStreamAsync

function stringifyNDJSONStreamAsync<T>(iterable: AsyncIterable<T>): AsyncIterable<string>

stringifyNDJSONStream

function stringifyNDJSONStream<T>(iterable: Iterable<T>): Iterable<string>

stringifyNDJSONStreamAsync

function stringifyNDJSONStreamAsync<T>(iterable: AsyncIterable<T>): AsyncIterable<string>

timestampBasedId

function timestampBasedId(): Iterator<[timestamp: number, num: number]>

ReusableIterable

interface IReusableIterable<T> extends Iterable<T> {
  close(): void
}

class ReusableIterable<T> implements IReusableIterable<T> {
  get done(): boolean | undefined

  constructor(iterable: Iterable<T>)

  close(): void
}

ReusableAsyncIterable

interface IReusableAsyncIterable<T> extends AsyncIterable<T> {
  close(): Promise<void>
}

class ReusableAsyncIterable<T> implements IReusableAsyncIterable<T> {
  get done(): boolean | undefined

  constructor(iterable: AsyncIterable<T>)

  close(): Promise<void>
}

ngrams

function ngrams(text: string, n: number): IterableIterator<string>

allNgrams

function allNgrams(text: string): IterableIterator<string>

allCombinations

function allCombinations<T>(arr: T[], k: number): IterableIterator<T[]>

allIndexCombinations

function allIndexCombinations(
  arr: unknown[]
, k: number
): IterableIterator<number[]>

positiveFactors

function positiveFactors(value: number): IterableIterator<number>

positiveFactors(0) // []
positiveFactors(10) // [10, 5, 2, 1]
positiveFactors(-10) // [10, 5, 2, 1]

positiveCommonDivisors

function positiveCommonDivisors(a: number, b: number): IterableIterator<number>

positiveCommonDivisors(0, 0) // []
positiveCommonDivisors(12, 8) // [4, 2, 1]
positiveCommonDivisors(-12, 8) // [4, 2, 1]

reverse

function reverse<T>(arr: ArrayLike<T>): IterableIterator<T>