66 lines
1.8 KiB
JavaScript
66 lines
1.8 KiB
JavaScript
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var _curry2 =
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/*#__PURE__*/
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require("./internal/_curry2");
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var _isFunction =
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/*#__PURE__*/
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require("./internal/_isFunction");
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var curryN =
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/*#__PURE__*/
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require("./curryN");
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var toString =
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/*#__PURE__*/
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require("./toString");
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/**
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* Turns a named method with a specified arity into a function that can be
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* called directly supplied with arguments and a target object.
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*
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* The returned function is curried and accepts `arity + 1` parameters where
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* the final parameter is the target object.
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*
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* @func
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* @memberOf R
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* @since v0.1.0
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* @category Function
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* @sig Number -> String -> (a -> b -> ... -> n -> Object -> *)
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* @param {Number} arity Number of arguments the returned function should take
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* before the target object.
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* @param {String} method Name of any of the target object's methods to call.
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* @return {Function} A new curried function.
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* @see R.construct
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* @example
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*
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* const sliceFrom = R.invoker(1, 'slice');
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* sliceFrom(6, 'abcdefghijklm'); //=> 'ghijklm'
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* const sliceFrom6 = R.invoker(2, 'slice')(6);
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* sliceFrom6(8, 'abcdefghijklm'); //=> 'gh'
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*
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* const dog = {
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* speak: async () => 'Woof!'
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* };
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* const speak = R.invoker(0, 'speak');
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* speak(dog).then(console.log) //~> 'Woof!'
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*
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* @symb R.invoker(0, 'method')(o) = o['method']()
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* @symb R.invoker(1, 'method')(a, o) = o['method'](a)
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* @symb R.invoker(2, 'method')(a, b, o) = o['method'](a, b)
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*/
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var invoker =
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/*#__PURE__*/
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_curry2(function invoker(arity, method) {
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return curryN(arity + 1, function () {
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var target = arguments[arity];
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if (target != null && _isFunction(target[method])) {
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return target[method].apply(target, Array.prototype.slice.call(arguments, 0, arity));
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}
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throw new TypeError(toString(target) + ' does not have a method named "' + method + '"');
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});
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});
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module.exports = invoker;
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