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schangxiang@126.com

2025-09-19 18966e02fb573c7e2bb0c6426ed792b38b910940

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"use strict";
 
var uniq                = require("../array/#/uniq")
  , value               = require("./valid-value")
  , push                = Array.prototype.push
  , getOwnPropertyNames = Object.getOwnPropertyNames
  , getPrototypeOf      = Object.getPrototypeOf;
 
module.exports = function (obj) {
    var keys;
    obj = Object(value(obj));
    keys = getOwnPropertyNames(obj);
    while ((obj = getPrototypeOf(obj))) {
        push.apply(keys, getOwnPropertyNames(obj));
    }
    return uniq.call(keys);
};