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import baseSlice from './_baseSlice.js'; | |
/** | |
* The base implementation of methods like `_.dropWhile` and `_.takeWhile` | |
* without support for iteratee shorthands. | |
* | |
* @private | |
* @param {Array} array The array to query. | |
* @param {Function} predicate The function invoked per iteration. | |
* @param {boolean} [isDrop] Specify dropping elements instead of taking them. | |
* @param {boolean} [fromRight] Specify iterating from right to left. | |
* @returns {Array} Returns the slice of `array`. | |
*/ | |
function baseWhile(array, predicate, isDrop, fromRight) { | |
var length = array.length, | |
index = fromRight ? length : -1; | |
while ((fromRight ? index-- : ++index < length) && | |
predicate(array[index], index, array)) {} | |
return isDrop | |
? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length)) | |
: baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index)); | |
} | |
export default baseWhile; | |