node_modules/rxjs/util/pipe.js - master - eb/Surf

"use strict";
var noop_1 = require('./noop');
/* tslint:enable:max-line-length */
function pipe() {
    var fns = [];
    for (var _i = 0; _i < arguments.length; _i++) {
        fns[_i - 0] = arguments[_i];
    }
    return pipeFromArray(fns);
}
exports.pipe = pipe;
/* @internal */
function pipeFromArray(fns) {
    if (!fns) {
        return noop_1.noop;
    }
    if (fns.length === 1) {
        return fns[0];
    }
    return function piped(input) {
        return fns.reduce(function (prev, fn) { return fn(prev); }, input);
    };
}
exports.pipeFromArray = pipeFromArray;
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