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61 lines
1.6 KiB
61 lines
1.6 KiB
var apply = require('./_apply'), |
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arrayMap = require('./_arrayMap'), |
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baseFlatten = require('./_baseFlatten'), |
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baseIteratee = require('./_baseIteratee'), |
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baseRest = require('./_baseRest'), |
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baseUnary = require('./_baseUnary'), |
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castRest = require('./_castRest'), |
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isArray = require('./isArray'); |
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/* Built-in method references for those with the same name as other `lodash` methods. */ |
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var nativeMin = Math.min; |
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/** |
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* Creates a function that invokes `func` with its arguments transformed. |
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* |
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* @static |
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* @since 4.0.0 |
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* @memberOf _ |
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* @category Function |
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* @param {Function} func The function to wrap. |
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* @param {...(Function|Function[])} [transforms=[_.identity]] |
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* The argument transforms. |
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* @returns {Function} Returns the new function. |
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* @example |
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* |
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* function doubled(n) { |
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* return n * 2; |
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* } |
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* |
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* function square(n) { |
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* return n * n; |
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* } |
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* |
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* var func = _.overArgs(function(x, y) { |
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* return [x, y]; |
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* }, [square, doubled]); |
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* |
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* func(9, 3); |
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* // => [81, 6] |
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* |
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* func(10, 5); |
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* // => [100, 10] |
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*/ |
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var overArgs = castRest(function(func, transforms) { |
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transforms = (transforms.length == 1 && isArray(transforms[0])) |
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? arrayMap(transforms[0], baseUnary(baseIteratee)) |
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: arrayMap(baseFlatten(transforms, 1), baseUnary(baseIteratee)); |
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var funcsLength = transforms.length; |
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return baseRest(function(args) { |
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var index = -1, |
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length = nativeMin(args.length, funcsLength); |
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while (++index < length) { |
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args[index] = transforms[index].call(this, args[index]); |
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} |
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return apply(func, this, args); |
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}); |
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}); |
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module.exports = overArgs;
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