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- import _curry2 from "./internal/_curry2.js";
- import _isFunction from "./internal/_isFunction.js";
- import curryN from "./curryN.js";
- import toString from "./toString.js";
- /**
- * Given an `arity` (Number) and a `name` (String) the `invoker` function
- * returns a curried function that takes `arity` arguments and a `context`
- * object. It will "invoke" the `name`'d function (a method) on the `context`
- * object.
- *
- * @func
- * @memberOf R
- * @since v0.1.0
- * @category Function
- * @sig Number -> String -> (a -> b -> ... -> n -> Object -> *)
- * @param {Number} arity Number of arguments the returned function should take
- * before the target object.
- * @param {String} method Name of any of the target object's methods to call.
- * @return {Function} A new curried function.
- * @see R.construct
- * @example
- * // A function with no arguments
- * const asJson = invoker(0, "json")
- * // Just like calling .then((response) => response.json())
- * fetch("http://example.com/index.json").then(asJson)
- *
- * // A function with one argument
- * const sliceFrom = invoker(1, 'slice');
- * sliceFrom(6, 'abcdefghijklm'); //=> 'ghijklm'
- *
- * // A function with two arguments
- * const sliceFrom6 = invoker(2, 'slice')(6);
- * sliceFrom6(8, 'abcdefghijklm'); //=> 'gh'
- *
- * // NOTE: You can't simply pass some of the arguments to the initial invoker function.
- * const firstCreditCardSection = invoker(2, "slice", 0, 4)
- * firstCreditCardSection("4242 4242 4242 4242") // => Function<...>
- *
- * // Since invoker returns a curried function, you may partially apply it to create the function you need.
- * const firstCreditCardSection = invoker(2, "slice")(0, 4)
- * firstCreditCardSection("4242 4242 4242 4242") // => "4242"
- *
- * @symb R.invoker(0, 'method')(o) = o['method']()
- * @symb R.invoker(1, 'method')(a, o) = o['method'](a)
- * @symb R.invoker(2, 'method')(a, b, o) = o['method'](a, b)
- */
- var invoker =
- /*#__PURE__*/
- _curry2(function invoker(arity, method) {
- return curryN(arity + 1, function () {
- var target = arguments[arity];
- if (target != null && _isFunction(target[method])) {
- return target[method].apply(target, Array.prototype.slice.call(arguments, 0, arity));
- }
- throw new TypeError(toString(target) + ' does not have a method named "' + method + '"');
- });
- });
- export default invoker;
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