44 lines
995 B
JavaScript
44 lines
995 B
JavaScript
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'use strict';
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Object.defineProperty(exports, '__esModule', {
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value: true
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});
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exports['default'] = compose;
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// istanbul ignore next
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
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var _arityN = require('arity-n');
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var _arityN2 = _interopRequireDefault(_arityN);
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var compose2 = function compose2(f, g) {
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return function () {
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return f(g.apply(undefined, arguments));
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};
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};
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function compose() {
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for (var _len = arguments.length, functions = Array(_len), _key = 0; _key < _len; _key++) {
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functions[_key] = arguments[_key];
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}
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var funcs = functions.filter(function (fn) {
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return typeof fn === 'function';
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});
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var lastIdx = funcs.length - 1;
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var arity = 0;
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if (funcs.length <= 0) {
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throw new Error('No funcs passed');
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}
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if (lastIdx >= 0 && funcs[lastIdx]) {
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arity = funcs[lastIdx].length;
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}
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return (0, _arityN2['default'])(funcs.reduce(compose2), arity);
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}
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module.exports = exports['default'];
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