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Diffstat (limited to 'tools/eslint/node_modules/lodash/rest.js')
-rw-r--r-- | tools/eslint/node_modules/lodash/rest.js | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/tools/eslint/node_modules/lodash/rest.js b/tools/eslint/node_modules/lodash/rest.js new file mode 100644 index 0000000000..40856aeee9 --- /dev/null +++ b/tools/eslint/node_modules/lodash/rest.js @@ -0,0 +1,61 @@ +var apply = require('./_apply'), + toInteger = require('./toInteger'); + +/** Used as the `TypeError` message for "Functions" methods. */ +var FUNC_ERROR_TEXT = 'Expected a function'; + +/* Built-in method references for those with the same name as other `lodash` methods. */ +var nativeMax = Math.max; + +/** + * Creates a function that invokes `func` with the `this` binding of the + * created function and arguments from `start` and beyond provided as an array. + * + * **Note:** This method is based on the [rest parameter](https://mdn.io/rest_parameters). + * + * @static + * @memberOf _ + * @category Function + * @param {Function} func The function to apply a rest parameter to. + * @param {number} [start=func.length-1] The start position of the rest parameter. + * @returns {Function} Returns the new function. + * @example + * + * var say = _.rest(function(what, names) { + * return what + ' ' + _.initial(names).join(', ') + + * (_.size(names) > 1 ? ', & ' : '') + _.last(names); + * }); + * + * say('hello', 'fred', 'barney', 'pebbles'); + * // => 'hello fred, barney, & pebbles' + */ +function rest(func, start) { + if (typeof func != 'function') { + throw new TypeError(FUNC_ERROR_TEXT); + } + start = nativeMax(start === undefined ? (func.length - 1) : toInteger(start), 0); + return function() { + var args = arguments, + index = -1, + length = nativeMax(args.length - start, 0), + array = Array(length); + + while (++index < length) { + array[index] = args[start + index]; + } + switch (start) { + case 0: return func.call(this, array); + case 1: return func.call(this, args[0], array); + case 2: return func.call(this, args[0], args[1], array); + } + var otherArgs = Array(start + 1); + index = -1; + while (++index < start) { + otherArgs[index] = args[index]; + } + otherArgs[start] = array; + return apply(func, this, otherArgs); + }; +} + +module.exports = rest; |