26 lines
927 B
JavaScript
26 lines
927 B
JavaScript
|
/**
|
||
|
|
* The base implementation of `_.find`, `_.findLast`, `_.findKey`, and `_.findLastKey`,
|
||
|
|
* without support for callback shorthands and `this` binding, which iterates
|
||
|
|
* over `collection` using the provided `eachFunc`.
|
||
|
|
*
|
||
|
|
* @private
|
||
|
|
* @param {Array|Object|string} collection The collection to search.
|
||
|
|
* @param {Function} predicate The function invoked per iteration.
|
||
|
|
* @param {Function} eachFunc The function to iterate over `collection`.
|
||
|
|
* @param {boolean} [retKey] Specify returning the key of the found element
|
||
|
|
* instead of the element itself.
|
||
|
|
* @returns {*} Returns the found element or its key, else `undefined`.
|
||
|
|
*/
|
||
|
|
function baseFind(collection, predicate, eachFunc, retKey) {
|
||
|
|
var result;
|
||
|
|
eachFunc(collection, function(value, key, collection) {
|
||
|
|
if (predicate(value, key, collection)) {
|
||
|
|
result = retKey ? key : value;
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = baseFind;
|