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Diffstat (limited to 'tools/eslint/node_modules/lodash/lastIndexOf.js')
-rw-r--r-- | tools/eslint/node_modules/lodash/lastIndexOf.js | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/tools/eslint/node_modules/lodash/lastIndexOf.js b/tools/eslint/node_modules/lodash/lastIndexOf.js new file mode 100644 index 0000000000..1eb2f2836f --- /dev/null +++ b/tools/eslint/node_modules/lodash/lastIndexOf.js @@ -0,0 +1,49 @@ +var indexOfNaN = require('./_indexOfNaN'), + toInteger = require('./toInteger'); + +/* Built-in method references for those with the same name as other `lodash` methods. */ +var nativeMax = Math.max, + nativeMin = Math.min; + +/** + * This method is like `_.indexOf` except that it iterates over elements of + * `array` from right to left. + * + * @static + * @memberOf _ + * @category Array + * @param {Array} array The array to search. + * @param {*} value The value to search for. + * @param {number} [fromIndex=array.length-1] The index to search from. + * @returns {number} Returns the index of the matched value, else `-1`. + * @example + * + * _.lastIndexOf([1, 2, 1, 2], 2); + * // => 3 + * + * // Search from the `fromIndex`. + * _.lastIndexOf([1, 2, 1, 2], 2, 2); + * // => 1 + */ +function lastIndexOf(array, value, fromIndex) { + var length = array ? array.length : 0; + if (!length) { + return -1; + } + var index = length; + if (fromIndex !== undefined) { + index = toInteger(fromIndex); + index = (index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1)) + 1; + } + if (value !== value) { + return indexOfNaN(array, index, true); + } + while (index--) { + if (array[index] === value) { + return index; + } + } + return -1; +} + +module.exports = lastIndexOf; |