// optional / simple context binding | |
var aFunction = require('./_a-function'); | |
module.exports = function (fn, that, length) { | |
aFunction(fn); | |
if (that === undefined) return fn; | |
switch (length) { | |
case 1: return function (a) { | |
return fn.call(that, a); | |
}; | |
case 2: return function (a, b) { | |
return fn.call(that, a, b); | |
}; | |
case 3: return function (a, b, c) { | |
return fn.call(that, a, b, c); | |
}; | |
} | |
return function (/* ...args */) { | |
return fn.apply(that, arguments); | |
}; | |
}; |