My TypeScript FP Utility Functions

index.ts

const noop = (): void => {}

const identity = <T>(param: T): T => param

const pipe = (...fns: Function[]): Function => (param: any) => fns.reduce((result, fn) => fn(result), param)

const compose = (...fns: Function[]): Function => (param: any) => fns.reduceRight((acc, current) => current(acc), param)

const curry = (f: Function): Function => (...a: any[]) => (...b: any[]) => f(...a, ...b)

const curryRight = (f: Function): Function => (...a: any[]) => (...b: any[]) => f(...b, ...a)

const range = (start: number, end: number): number[] => Array.from({ length: (end - start) }, (v, k) => k + start)

//includes end number - useful if you actually want the numbers in the range instead of just the index range
const rangeIncEnd = (start: number, end: number): number[] => Array.from({ length: ((end - start) + 1) }, (v, k) => k + start) 

export{
  noop,
  identity,
  pipe,
  compose,
  curry,
  curryRight,
  range,
  rangeIncEnd,
}

// Also check out https://github.com/ritesh404/kudojs