asyncplify/src/value.js

FRP (functional reactive programming) library for Javascript

Asyncplify.value = function (value) {
    return new Asyncplify(Value, value);
};

function Value(value, sink) {
    this.sink = sink;
    this.sink.source = this;
    this.sink.emit(value);
    this.sink.end(null);
}

Value.prototype.setState = function (state) {
    if (state === Asyncplify.states.CLOSED)
        this.sink = NoopSink.instance;
};