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November 18, 2016 20:15
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esnextbin sketch
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| <!doctype html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>ESNextbin Sketch</title> | |
| <!-- put additional styles and scripts here --> | |
| </head> | |
| <body> | |
| <div id=app></div> | |
| <!-- put markup and other contents here --> | |
| </body> | |
| </html> |
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| // write ES2015 code and import modules from npm | |
| // and then press "Execute" to run your program | |
| import { run } from '@cycle/xstream-run'; | |
| import { makeDOMDriver, div, button } from '@cycle/dom'; | |
| import xs from 'xstream'; | |
| import isolate from '@cycle/isolate'; | |
| function Component(sources) { | |
| // expected: one console.log per component | |
| // actual: more and more for every click | |
| return { | |
| DOM : sources.shared$ | |
| .debug(x => console.log(x)) | |
| .map(() => div('Component')) | |
| } | |
| } | |
| function main(sources) { | |
| // just a state stream used to create two components | |
| const shared$ = sources.DOM | |
| .select('button') | |
| .events('click') | |
| .map(_ => [1]) | |
| .startWith([1]); | |
| // mapping over xs.of([1,2]) fixes the problem but I need to map over shared$ and would like to know | |
| // why I get this behaviour | |
| const sinks$ = shared$ | |
| .map(array => array.map(key => Component({ shared$, ...sources }))) | |
| const childDOM$ = sinks$ | |
| .map(array => array.map(sink => sink.DOM)) | |
| .map(array => xs.combine(...array)) | |
| .flatten(); | |
| const vdom$ = sinks$.map(childDOM => div([ | |
| div(childDOM[0].DOM), | |
| button('Change Shared Data'), | |
| div('PROBLEM: Why do I get more and more console.logs for every click on the button?') | |
| ])) | |
| return { | |
| DOM : vdom$ | |
| } | |
| } | |
| run(main, { | |
| DOM : makeDOMDriver('#app'), | |
| }); |
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| { | |
| "name": "esnextbin-sketch", | |
| "version": "0.0.0", | |
| "dependencies": { | |
| "@cycle/xstream-run": "3.1.0", | |
| "@cycle/dom": "14.1.0", | |
| "xstream": "8.0.0", | |
| "@cycle/isolate": "1.4.0", | |
| "babel-runtime": "6.18.0" | |
| } | |
| } |
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| 'use strict'; | |
| var _toConsumableArray2 = require('babel-runtime/helpers/toConsumableArray'); | |
| var _toConsumableArray3 = _interopRequireDefault(_toConsumableArray2); | |
| var _extends2 = require('babel-runtime/helpers/extends'); | |
| var _extends3 = _interopRequireDefault(_extends2); | |
| var _xstreamRun = require('@cycle/xstream-run'); | |
| var _dom = require('@cycle/dom'); | |
| var _xstream = require('xstream'); | |
| var _xstream2 = _interopRequireDefault(_xstream); | |
| var _isolate = require('@cycle/isolate'); | |
| var _isolate2 = _interopRequireDefault(_isolate); | |
| function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } | |
| // write ES2015 code and import modules from npm | |
| // and then press "Execute" to run your program | |
| function Component(sources) { | |
| // expected: one console.log per component | |
| // actual: more and more for every click | |
| return { | |
| DOM: sources.shared$.debug(function (x) { | |
| return console.log(x); | |
| }).map(function () { | |
| return (0, _dom.div)('Component'); | |
| }) | |
| }; | |
| } | |
| function main(sources) { | |
| // just a state stream used to create two components | |
| var shared$ = sources.DOM.select('button').events('click').map(function (_) { | |
| return [1]; | |
| }).startWith([1]); | |
| // mapping over xs.of([1,2]) fixes the problem but I need to map over shared$ and would like to know | |
| // why I get this behaviour | |
| var sinks$ = shared$.map(function (array) { | |
| return array.map(function (key) { | |
| return Component((0, _extends3.default)({ shared$: shared$ }, sources)); | |
| }); | |
| }); | |
| var childDOM$ = sinks$.map(function (array) { | |
| return array.map(function (sink) { | |
| return sink.DOM; | |
| }); | |
| }).map(function (array) { | |
| return _xstream2.default.combine.apply(_xstream2.default, (0, _toConsumableArray3.default)(array)); | |
| }).flatten(); | |
| var vdom$ = sinks$.map(function (childDOM) { | |
| return (0, _dom.div)([(0, _dom.div)(childDOM[0].DOM), (0, _dom.button)('Change Shared Data'), (0, _dom.div)('PROBLEM: Why do I get more and more console.logs for every click on the button?')]); | |
| }); | |
| return { | |
| DOM: vdom$ | |
| }; | |
| } | |
| (0, _xstreamRun.run)(main, { | |
| DOM: (0, _dom.makeDOMDriver)('#app') | |
| }); |
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