d2-ui
Version:
65 lines (58 loc) • 1.73 kB
JavaScript
var $isNaN = require('./helpers/isNaN');
var $isFinite = require('./helpers/isFinite');
var sign = require('./helpers/sign');
var mod = require('./helpers/mod');
var IsCallable = require('is-callable');
var toPrimitive = require('es-to-primitive/es5');
// https://es5.github.io/#x9
var ES5 = {
ToPrimitive: toPrimitive,
ToBoolean: function ToBoolean(value) {
return Boolean(value);
},
ToNumber: function ToNumber(value) {
return Number(value);
},
ToInteger: function ToInteger(value) {
var number = this.ToNumber(value);
if ($isNaN(number)) { return 0; }
if (number === 0 || !$isFinite(number)) { return number; }
return sign(number) * Math.floor(Math.abs(number));
},
ToInt32: function ToInt32(x) {
return this.ToNumber(x) >> 0;
},
ToUint32: function ToUint32(x) {
return this.ToNumber(x) >>> 0;
},
ToUint16: function ToUint16(value) {
var number = this.ToNumber(value);
if ($isNaN(number) || number === 0 || !$isFinite(number)) { return 0; }
var posInt = sign(number) * Math.floor(Math.abs(number));
return mod(posInt, 0x10000);
},
ToString: function ToString(value) {
return String(value);
},
ToObject: function ToObject(value) {
this.CheckObjectCoercible(value);
return Object(value);
},
CheckObjectCoercible: function CheckObjectCoercible(value, optMessage) {
/* jshint eqnull:true */
if (value == null) {
throw new TypeError(optMessage || 'Cannot call method on ' + value);
}
return value;
},
IsCallable: IsCallable,
SameValue: function SameValue(x, y) {
if (x === y) { // 0 === -0, but they are not identical.
if (x === 0) { return 1 / x === 1 / y; }
return true;
}
return $isNaN(x) && $isNaN(y);
}
};
module.exports = ES5;
;