operator sumBy.ts

100% Statements 5/5

100% Branches 0/0

100% Functions 3/3

100% Lines 1/1

Press n or j to go to the next uncovered block, b, p or k for the previous block.


1
2
3
4  
 
8x
  import {NumberProjection} from 'fnxt/fnxt-types';
 
export const sumBy = <E>(fn: NumberProjection<E>) => (array: E[]): number => array.reduce((a, b) => a + fn(b), 0);