Module function/composeP

composeP

• composeP(...chain: ((...args: any[]) => Promise<any>)[]): any

• Performs right-to-left composition of Promise-returning functions. The rightmost function may have any arity; the remaining functions must be unary.

  Note: ALL of the chained functions must return a Promise.

  Note: The result of compose is not automatically curried.

  example

   var res = x => Promise.resolve(x);
   var f = composeP(x => res(-x), (x, y) => res(Math.pow(x, y)));
   f(3, 4).then(console.log); // -(3^4)
  

  Parameters

  • Rest ...chain: ((...args: any[]) => Promise<any>)[]

  Returns any