setup-php/node_modules/urlgrey/util.js
2019-09-20 21:54:46 +05:30

62 lines
1.6 KiB
JavaScript

var isObject = function (o){
return (typeof o === "object") &&
(o !== null) &&
(Object.prototype.toString.call(o) === '[object Object]');
};
exports.isObject = isObject;
exports.isString = function(o){
return Object.prototype.toString.call(o) === '[object String]';
};
exports.isArray = function(o){
return Object.prototype.toString.call(o) === "[object Array]";
};
exports.isBoolean = function(o) {
return typeof o === 'boolean';
};
exports.isNumber = function(o) {
return typeof o === 'number' && isFinite(o);
};
exports.isNull = function(o) {
return o === null;
};
exports.keys = function (object) {
if (!isObject(object)) {
throw new TypeError("Object.keys called on a non-object");
}
var result = [];
for (var name in object) {
if (hasOwnProperty.call(object, name)) {
result.push(name);
}
}
return result;
};
// String.prototype.substr - negative index don't work in IE8
if ('ab'.substr(-1) !== 'b') {
exports.substr = function (str, start, length) {
// did we get a negative start, calculate how much it is from the beginning of the string
if (start < 0) { start = str.length + start; }
// call the original function
return str.substr(start, length);
};
} else {
exports.substr = function (str, start, length) {
return str.substr(start, length);
};
}
// Array.prototype.map is supported in IE9
exports.map = function map(xs, fn) {
if (xs.map) { return xs.map(fn); }
var out = new Array(xs.length);
for (var i = 0; i < xs.length; i++) {
out[i] = fn(xs[i], i, xs);
}
return out;
};