@basic-streams/ap/index.js

ap operator for basic-streams

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
function ap(streamF, streamV) {
    return function (cb) {
        var latestF = null;
        var latestV = null;
        var push = function () {
            if (latestF && latestV) {
                var fn = latestF.value;
                cb(fn(latestV.value));
            }
        };
        var disposef = streamF(function (f) {
            latestF = { value: f };
            push();
        });
        var disposev = streamV(function (v) {
            latestV = { value: v };
            push();
        });
        return function () {
            disposef();
            disposev();
        };
    };
}
exports.default = ap;