wishthis/node_modules/es5-ext/object/first-key.js
2022-01-21 09:28:41 +01:00

13 lines
287 B
JavaScript

"use strict";
var value = require("./valid-value")
, objPropertyIsEnumerable = Object.prototype.propertyIsEnumerable;
module.exports = function (obj) {
var i;
value(obj);
for (i in obj) {
if (objPropertyIsEnumerable.call(obj, i)) return i;
}
return null;
};