| 1 | "use strict";
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| 2 |
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| 3 | exports.__esModule = true;
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| 4 | exports["default"] = void 0;
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| 5 | var _ramda = require("ramda");
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| 6 | var _isNotNil = _interopRequireDefault(require("./isNotNil"));
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| 7 | var _isNonEmptyArray = _interopRequireDefault(require("./isNonEmptyArray"));
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| 8 | var _stubUndefined = _interopRequireDefault(require("./stubUndefined"));
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| 9 | function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
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| 10 | function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }
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| 11 | function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
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| 12 | function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
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| 13 | function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && iter[Symbol.iterator] != null || iter["@@iterator"] != null) return Array.from(iter); }
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| 14 | function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }
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| 15 | function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; } /**
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| 16 | * Can be used as a way to compose multiple invokers together to form polymorphic functions,
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| 17 | * or functions that exhibit different behaviors based on their argument(s).
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| 18 | * Consumes dispatching functions and keep trying to invoke each in turn, until a non-nil value is returned.
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| 19 | *
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| 20 | * Accepts a list of dispatching functions and returns a new function.
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| 21 | * When invoked, this new function is applied to some arguments,
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| 22 | * each dispatching function is applied to those same arguments until one of the
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| 23 | * dispatching functions returns a non-nil value.
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| 24 | *
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| 25 | * @func dispatch
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| 26 | * @memberOf RA
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| 27 | * @since {@link https://char0n.github.io/ramda-adjunct/2.6.0|v2.6.0}
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| 28 | * @category Function
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| 29 | * @sig [((a, b, ...) -> x1), ((a, b, ...) -> x2), ...] -> x1 | x2 | ...
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| 30 | * @param {!Array} functions A list of functions
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| 31 | * @return {*|undefined} Returns the first not-nil value, or undefined if either an empty list is provided or none of the dispatching functions returns a non-nil value
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| 32 | * @see {@link RA.isNotNil}
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| 33 | * @example
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| 34 | *
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| 35 | * // returns first non-nil value
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| 36 | * const stubNil = () => null;
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| 37 | * const stubUndefined = () => undefined;
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| 38 | * const addOne = v => v + 1;
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| 39 | * const addTwo = v => v + 2;
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| 40 | *
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| 41 | * RA.dispatch([stubNil, stubUndefined, addOne, addTwo])(1); //=> 2
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| 42 | *
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| 43 | * // acts as a switch
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| 44 | * const fnSwitch = RA.dispatch([
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| 45 | * R.ifElse(RA.isString, s => `${s}-join`, RA.stubUndefined),
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| 46 | * R.ifElse(RA.isNumber, n => n + 1, RA.stubUndefined),
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| 47 | * R.ifElse(RA.isDate, R.T, RA.stubUndefined),
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| 48 | * ]);
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| 49 | * fnSwitch(1); //=> 2
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| 50 | */
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| 51 | var byArity = (0, _ramda.comparator)(function (a, b) {
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| 52 | return a.length > b.length;
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| 53 | });
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| 54 | var getMaxArity = (0, _ramda.pipe)((0, _ramda.sort)(byArity), _ramda.head, (0, _ramda.prop)('length'));
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| 55 | var iteratorFn = (0, _ramda.curry)(function (args, accumulator, fn) {
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| 56 | var result = fn.apply(void 0, _toConsumableArray(args));
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| 57 | return (0, _isNotNil["default"])(result) ? (0, _ramda.reduced)(result) : accumulator;
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| 58 | });
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| 59 | var dispatchImpl = function dispatchImpl(functions) {
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| 60 | var arity = getMaxArity(functions);
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| 61 | return (0, _ramda.curryN)(arity, function () {
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| 62 | for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
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| 63 | args[_key] = arguments[_key];
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| 64 | }
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| 65 | return (0, _ramda.reduce)(iteratorFn(args), undefined, functions);
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| 66 | });
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| 67 | };
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| 68 | var dispatch = (0, _ramda.ifElse)(_isNonEmptyArray["default"], dispatchImpl, _stubUndefined["default"]);
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| 69 | var _default = dispatch;
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| 70 | exports["default"] = _default; |
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