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Optimize lodash function to avoid slow path for arrays.

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Former-commit-id: 24e2c4ac2525ae38e214fdb0ea8e3ab664d784b7
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John-David Dalton
2013-03-09 18:24:29 -08:00
parent 31e4e631f9
commit ee4542a699
8 changed files with 164 additions and 159 deletions
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19
lodash.js
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@@ -212,14 +212,15 @@
* implicitly or explicitly included in the build.
*
* The chainable wrapper functions are:
* `after`, `assign`, `bind`, `bindAll`, `bindKey`, `chain`, `compact`, `compose`,
* `concat`, `countBy`, `debounce`, `defaults`, `defer`, `delay`, `difference`,
* `filter`, `flatten`, `forEach`, `forIn`, `forOwn`, `functions`, `groupBy`,
* `initial`, `intersection`, `invert`, `invoke`, `keys`, `map`, `max`, `memoize`,
* `merge`, `min`, `object`, `omit`, `once`, `pairs`, `partial`, `partialRight`,
* `pick`, `pluck`, `push`, `range`, `reject`, `rest`, `reverse`, `shuffle`,
* `slice`, `sort`, `sortBy`, `splice`, `tap`, `throttle`, `times`, `toArray`,
* `union`, `uniq`, `unshift`, `values`, `where`, `without`, `wrap`, and `zip`
* `after`, `assign`, `bind`, `bindAll`, `bindKey`, `chain`, `compact`,
* `compose`, `concat`, `countBy`, `createCallback`, `debounce`, `defaults`,
* `defer`, `delay`, `difference`, `filter`, `flatten`, `forEach`, `forIn`,
* `forOwn`, `functions`, `groupBy`, `initial`, `intersection`, `invert`,
* `invoke`, `keys`, `map`, `max`, `memoize`, `merge`, `min`, `object`, `omit`,
* `once`, `pairs`, `partial`, `partialRight`, `pick`, `pluck`, `push`, `range`,
* `reject`, `rest`, `reverse`, `shuffle`, `slice`, `sort`, `sortBy`, `splice`,
* `tap`, `throttle`, `times`, `toArray`, `union`, `uniq`, `unshift`, `values`,
* `where`, `without`, `wrap`, and `zip`
*
* The non-chainable wrapper functions are:
* `clone`, `cloneDeep`, `contains`, `escape`, `every`, `find`, `has`,
@@ -241,7 +242,7 @@
*/
function lodash(value) {
// don't wrap if already wrapped, even if wrapped by a different `lodash` constructor
return (value && typeof value == 'object' && hasOwnProperty.call(value, '__wrapped__'))
return (value && typeof value == 'object' && !isArray(value) && hasOwnProperty.call(value, '__wrapped__'))
? value
: new lodashWrapper(value);
}