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40 lines
758 B
JavaScript

'use strict'
var toString = ({}).toString
var hasOwnProp = ({}).hasOwnProperty
var utils = {
noop: function noop() {},
isString: function isString(str) {
return typeof str === 'string'
},
forEach: function forEach(obj, fn) {
for (var key in obj) {
if (hasOwnProp.call(obj, key)) {
fn(key, obj[key])
}
}
},
assign: function assign (dest, methods) {
utils.forEach(methods, function (key, val) {
dest[key] = val
})
}
}
function checkType(type) {
return function _checkType(val) {
return toString.call(val) === '[object ' + type + ']'
}
}
// add isRegExp, isArray
['RegExp', 'Array'].forEach(function addIsChecks(type) {
utils['is' + type] = checkType(type)
})
module.exports = utils