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Optimize _.isArguments and cleanup _.isArray and _.isRegExp.

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Former-commit-id: 2ce67cedca1e2b21e206c4822126b86304c8dd5f
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John-David Dalton
2013-07-06 13:47:11 -07:00
parent 2c833b5028
commit bcb5eda7d8
1 changed files with 4 additions and 4 deletions
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8
lodash.js
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@@ -1227,12 +1227,12 @@
* // => false * // => false
*/ */
function isArguments(value) { function isArguments(value) {
return toString.call(value) == argsClass; return (value && typeof value == 'object') ? toString.call(value) == argsClass : false;
} }
// fallback for browsers that can't detect `arguments` objects by [[Class]] // fallback for browsers that can't detect `arguments` objects by [[Class]]
if (!support.argsClass) { if (!support.argsClass) {
isArguments = function(value) { isArguments = function(value) {
return value ? hasOwnProperty.call(value, 'callee') : false; return (value && typeof value == 'object') ? hasOwnProperty.call(value, 'callee') : false;
}; };
} }
@@ -1253,7 +1253,7 @@
* // => true * // => true
*/ */
var isArray = nativeIsArray || function(value) { var isArray = nativeIsArray || function(value) {
return value ? (typeof value == 'object' && toString.call(value) == arrayClass) : false; return (value && typeof value == 'object') ? toString.call(value) == arrayClass : false;
}; };
/** /**
@@ -2222,7 +2222,7 @@
* // => true * // => true
*/ */
function isRegExp(value) { function isRegExp(value) {
return !!(value && objectTypes[typeof value]) && toString.call(value) == regexpClass; return (value && objectTypes[typeof value]) ? toString.call(value) == regexpClass : false;
} }
/** /**