xstream
Version:
An extremely intuitive, small, and fast functional reactive stream library for JavaScript
104 lines • 7.97 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var index_1 = require("../index");
var DebounceOperator = /** @class */ (function () {
function DebounceOperator(dt, ins) {
this.dt = dt;
this.ins = ins;
this.type = 'debounce';
this.out = null;
this.id = null;
this.t = index_1.NO;
}
DebounceOperator.prototype._start = function (out) {
this.out = out;
this.ins._add(this);
};
DebounceOperator.prototype._stop = function () {
this.ins._remove(this);
this.out = null;
this.clearInterval();
};
DebounceOperator.prototype.clearInterval = function () {
var id = this.id;
if (id !== null) {
clearInterval(id);
}
this.id = null;
};
DebounceOperator.prototype._n = function (t) {
var _this = this;
var u = this.out;
if (!u)
return;
this.clearInterval();
this.t = t;
this.id = setInterval(function () {
_this.clearInterval();
u._n(t);
_this.t = index_1.NO;
}, this.dt);
};
DebounceOperator.prototype._e = function (err) {
var u = this.out;
if (!u)
return;
this.clearInterval();
u._e(err);
};
DebounceOperator.prototype._c = function () {
var u = this.out;
if (!u)
return;
this.clearInterval();
if (this.t != index_1.NO)
u._n(this.t);
this.t = index_1.NO;
u._c();
};
return DebounceOperator;
}());
/**
* Delays events until a certain amount of silence has passed. If that timespan
* of silence is not met the event is dropped.
*
* Marble diagram:
*
* ```text
* --1----2--3--4----5|
* debounce(60)
* -----1----------4--|
* ```
*
* Example:
*
* ```js
* import fromDiagram from 'xstream/extra/fromDiagram'
* import debounce from 'xstream/extra/debounce'
*
* const stream = fromDiagram('--1----2--3--4----5|')
* .compose(debounce(60))
*
* stream.addListener({
* next: i => console.log(i),
* error: err => console.error(err),
* complete: () => console.log('completed')
* })
* ```
*
* ```text
* > 1
* > 4
* > completed
* ```
*
* @param {number} period The amount of silence required in milliseconds.
* @return {Stream}
*/
function debounce(period) {
return function debounceOperator(ins) {
return new index_1.Stream(new DebounceOperator(period, ins));
};
}
exports.default = debounce;
//# sourceMappingURL=data:application/json;base64,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