amos-tool/lib/utils.js

amos ui tool

var isString = function(r) {
    return "[object String]" === Object.prototype.toString.call(r)
  },
  isArray = Array.isArray || function(r) {
    return "[object Array]" === Object.prototype.toString.call(r)
  },
  property = function(r) {
    return function(t) {
      return null == t ? void 0 : t[r]
    }
  },
  MAX_ARRAY_INDEX = Math.pow(2, 53) - 1,
  getLength = property("length"),
  isArrayLike = function(r) {
    var t = getLength(r);
    return "number" == typeof t && t >= 0 && t <= MAX_ARRAY_INDEX
  },
  isArguments = function(r) {
    return "[object Arguments]" === Object.prototype.toString.call(r)
  },
  isObject = function(r) {
    var t = typeof r;
    return "function" === t || "object" === t && !!r
  },
  has = function(r, t) {
    if (!isArray(t)) return null != r && Object.prototype.hasOwnProperty.call(r, t);
    for (var e = t.length, n = 0; n < e; n++) {
      var i = t[n];
      if (null == r || !Object.prototype.hasOwnProperty.call(r, i)) return !1;
      r = r[i]
    }
    return !!e
  },
  keys = function(r) {
    if (!isObject(r)) return [];
    if (Object.keys) return Object.keys(r);
    var t = [];
    for (var e in r) has(r, e) && t.push(e);
    return t
  },
  isEmpty = function(r) {
    return null == r || (isArrayLike(r) && (isArray(r) || isString(r) || isArguments(r)) ? 0 === r.length : 0 === keys(r).length)
  },
  some = function(r, t) {
    if (void 0 === r || null === r) throw new TypeError;
    var e = Object(r),
      n = e.length >>> 0;
    if ("function" != typeof t) throw new TypeError;
    for (var i = arguments.length >= 3 ? arguments[2] : void 0, o = 0; o < n; o++)
      if (o in e && t.call(i, e[o], o, e)) return !0;
    return !1
  };
module.exports = {
  isString: isString,
  isArray: isArray,
  isObject: isObject,
  isEmpty: isEmpty,
  some: some
};