react app

react-app/node_modules/core-js/modules/$.array-methods.js

@@ -0,0 +1,43 @@
+// 0 -> Array#forEach
+// 1 -> Array#map
+// 2 -> Array#filter
+// 3 -> Array#some
+// 4 -> Array#every
+// 5 -> Array#find
+// 6 -> Array#findIndex
+var ctx      = require('./$.ctx')
+  , IObject  = require('./$.iobject')
+  , toObject = require('./$.to-object')
+  , toLength = require('./$.to-length')
+  , asc      = require('./$.array-species-create');
+module.exports = function(TYPE){
+  var IS_MAP        = TYPE == 1
+    , IS_FILTER     = TYPE == 2
+    , IS_SOME       = TYPE == 3
+    , IS_EVERY      = TYPE == 4
+    , IS_FIND_INDEX = TYPE == 6
+    , NO_HOLES      = TYPE == 5 || IS_FIND_INDEX;
+  return function($this, callbackfn, that){
+    var O      = toObject($this)
+      , self   = IObject(O)
+      , f      = ctx(callbackfn, that, 3)
+      , length = toLength(self.length)
+      , index  = 0
+      , result = IS_MAP ? asc($this, length) : IS_FILTER ? asc($this, 0) : undefined
+      , val, res;
+    for(;length > index; index++)if(NO_HOLES || index in self){
+      val = self[index];
+      res = f(val, index, O);
+      if(TYPE){
+        if(IS_MAP)result[index] = res;            // map
+        else if(res)switch(TYPE){
+          case 3: return true;                    // some
+          case 5: return val;                     // find
+          case 6: return index;                   // findIndex
+          case 2: result.push(val);               // filter
+        } else if(IS_EVERY)return false;          // every
+      }
+    }
+    return IS_FIND_INDEX ? -1 : IS_SOME || IS_EVERY ? IS_EVERY : result;
+  };
+};