@rxreact/context/dist/lib/utils/reducer.js

Dependency-inject an RxJS signal graph into your React components

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var rxjs_1 = require("rxjs");
var operators_1 = require("rxjs/operators");
function reducer(pairs, startWith) {
    var xs = pairs.map(function (_a, index) {
        var observable = _a[0], _mapper = _a[1];
        return observable.pipe(operators_1.map(function (value) { return ({ index: index, payload: value }); }));
    });
    return rxjs_1.merge.apply(void 0, xs).pipe(operators_1.scan(function (state, _a) {
        var index = _a.index, payload = _a.payload;
        var _b = pairs[index], f = _b[1];
        return f(state, payload);
    }, startWith), operators_1.shareReplay(1));
}
exports.reducer = reducer;
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