fromit:Linq for js Iterables 源码

从中 使用生成器的Linq样式(如c#) npm install fromit import { from } from "fromit" const list = new Set ( [ 1 , 2 , 3 ] ) ; expect ( from ( list ) . filter ( x => x > 2 ) . first ( ) ) . toBe ( 3 ) ; const a = [ 1 , 2 , 3 ] ; const b = [ 3 , 4 , 5 ] ; let r = from ( a ) . intersect ( b ) ; expect ( r . count (