Function setArrayStatics

lib/web/polyfill.js:1956–1960

(keys, length)

// JavaScript 1.6 / Strawman array statics shim
!function(arrayStatics){
  function setArrayStatics(keys, length){
    forEach.call(array(keys), function(key){
      if(key in ArrayProto)arrayStatics[key] = ctx(call, ArrayProto[key], length);
    });
  }
  setArrayStatics('pop,reverse,shift,keys,values,entries', 1);
  setArrayStatics('indexOf,every,some,forEach,map,filter,find,findIndex,includes', 3);
  setArrayStatics('join,slice,concat,push,splice,unshift,sort,lastIndexOf,' +