1 | import _curry2 from "./internal/_curry2.js";
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2 | import _isFunction from "./internal/_isFunction.js";
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3 | import curryN from "./curryN.js";
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4 | import toString from "./toString.js";
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5 | /**
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6 | * Turns a named method with a specified arity into a function that can be
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7 | * called directly supplied with arguments and a target object.
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8 | *
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9 | * The returned function is curried and accepts `arity + 1` parameters where
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10 | * the final parameter is the target object.
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11 | *
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12 | * @func
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13 | * @memberOf R
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14 | * @since v0.1.0
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15 | * @category Function
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16 | * @sig Number -> String -> (a -> b -> ... -> n -> Object -> *)
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17 | * @param {Number} arity Number of arguments the returned function should take
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18 | * before the target object.
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19 | * @param {String} method Name of any of the target object's methods to call.
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20 | * @return {Function} A new curried function.
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21 | * @see R.construct
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22 | * @example
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23 | *
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24 | * const sliceFrom = R.invoker(1, 'slice');
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25 | * sliceFrom(6, 'abcdefghijklm'); //=> 'ghijklm'
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26 | * const sliceFrom6 = R.invoker(2, 'slice')(6);
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27 | * sliceFrom6(8, 'abcdefghijklm'); //=> 'gh'
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28 | *
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29 | * const dog = {
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30 | * speak: async () => 'Woof!'
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31 | * };
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32 | * const speak = R.invoker(0, 'speak');
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33 | * speak(dog).then(console.log) //~> 'Woof!'
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34 | *
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35 | * @symb R.invoker(0, 'method')(o) = o['method']()
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36 | * @symb R.invoker(1, 'method')(a, o) = o['method'](a)
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37 | * @symb R.invoker(2, 'method')(a, b, o) = o['method'](a, b)
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38 | */
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39 |
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40 | var invoker =
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41 | /*#__PURE__*/
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42 | _curry2(function invoker(arity, method) {
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43 | return curryN(arity + 1, function () {
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44 | var target = arguments[arity];
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45 |
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46 | if (target != null && _isFunction(target[method])) {
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47 | return target[method].apply(target, Array.prototype.slice.call(arguments, 0, arity));
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48 | }
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49 |
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50 | throw new TypeError(toString(target) + ' does not have a method named "' + method + '"');
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51 | });
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52 | });
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53 |
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54 | export default invoker; |
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