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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Try Flow: Learn and share JavaScript snippets using type annotations</title>
<link rel='shortcut icon' href='favicon.png'>
<meta name="description" content="Learn Flow by examples, write and share your own code snippets with a static type checker in JavaScript." />
<meta name="twitter:card" value="Learn Flow by examples, write and share your own code snippets with a static type checker in JavaScript.">
<meta property="og:title" content="Try Flow" />
<meta property="og:type" content="article" />
<meta property="og:url" content="https://tryflow.org/" />
<meta property="og:description" content="Learn Flow by examples, write and share your own code snippets with a static type checker in JavaScript." />
<style type="text/css" media="screen">
#editor {
position: absolute;
top: 80px;
right: 30%;
bottom: 30px;
padding-bottom: 30px;
left: 0;
margin:0;
height: 100%;
font-size: 15px;
font-family: 'Menlo', 'Ubuntu Mono', 'Consolas', 'source-code-pro', monospace;
}
.navigation {
position: absolute;
background: #fff;
border-left: solid 8px #bde2b1;
font-family: 'Menlo', 'Ubuntu Mono', 'Consolas', 'source-code-pro', monospace;
font-size: 13px;
top: 0;
left: 70%;
height: 100%;
width: 30%;
}
.pure-tree {
text-align: left;
display: block;
}
.pure-tree.main-tree {
display: inline-block;
padding-left: 1.5em;
}
.pure-tree:not(.main-tree) {
padding-left: 1.2em;
/*margin-top: 1em;*/
}
.pure-tree:not(.main-tree) li {
overflow: hidden;
height: 0;
display: block;
}
.pure-tree label {
display: block;
cursor: pointer;
color: #717780;
}
.pure-tree label:before {
width: 1em;
height: 1em;
line-height: 2em;
display: inline-block;
font-family: 'Ionicons', sans-serif;
content: "\f434";
padding-right: 0.25em;
}
.pure-tree .pure-tree_link a:before{
width: 1em;
height: 1em;
line-height: 2em;
display: inline-block;
font-family: 'Ionicons', sans-serif;
content: "\f391";
padding-right: 0.2em;
}
.pure-tree .pure-tree_link a.active {
color: black;
font-weight: 700;
}
.pure-tree label:hover {
color: black;
border-bottom-color: black;
}
.pure-tree .pure-tree_link a {
padding: 0.25em 1.125em 0.25em 0;
display: block;
border-radius: .2em;
color: #3D4653;
text-decoration: none;
}
.pure-tree .pure-tree_link a:hover {
color: black;
}
.pure-tree.nested {
padding-left: 1em;
}
.pure-tree [type="checkbox"] {
display: none;
}
.pure-tree [type="checkbox"]:checked + label {
color: black;
border-bottom-color: black;
}
.pure-tree [type="checkbox"]:checked ~ ul > li {
height: auto;
}
.navigation li {
list-style-type: none;
}
.marker-highlight-error {
position: absolute;
border-bottom: dashed 1px red;
z-index: 1000;
}
.overlay {
background: #333;
opacity: 0.8;
border-top: 1px solid #444;
padding: 6px 12px;
font-family: 'Menlo', 'Ubuntu Mono', 'Consolas', 'source-code-pro', monospace;;
position: fixed;
bottom: 0;
left: 0;
z-index: 1000;
width: 100%;
color: #ccc;
font-size: 12px;
display: flex;
flex-direction: row;
justify-content: space-between;
}
.overlay .info {
font-size: 12px;
font-style: italic;
color: white;
}
.overlay .right {
margin-right: 20px;
}
.overlay a {
color: white
}
</style>
<link rel="stylesheet" type="text/css" media="screen" href="https://code.ionicframework.com/ionicons/2.0.1/css/ionicons.min.css" />
</head>
<body>
<div style="
top: 0;
z-index: 1000;
background: white;
padding: 10px;
width: 70%;
height: 80px;
"><h1 style="
color: #666;
font-family: Arial;
font-size: 1.2em;
text-align: center;
">Please, consider an officially maintained <a href="https://flowtype.org/try">flowtype.org/try</a></h1></div>
<div id="editor">
</div>
<div class="navigation">
<ul id="compositions-list" class="pure-tree main-tree">
<li>
<input type="checkbox" id="trigger-views" checked="checked">
<label for="trigger-views">Basics</label>
<ul class="pure-tree">
<li class="pure-tree_link"><a href="/#1">01-Untyped.js</a></li>
<li class="pure-tree_link"><a href="/#2">02-Untyped-constants.js</a></li>
<li class="pure-tree_link"><a href="/#3">03-Basic-typed.js</a></li>
<li class="pure-tree_link"><a href="/#4">04-Dynamic-object-keys.js</a></li>
<li class="pure-tree_link"><a href="/#5">05-Function-types.js</a></li>
<li class="pure-tree_link"><a href="/#6">06-Recap.js</a></li>
<li class="pure-tree_link"><a href="/#7">07-Maybe-and-optionals.js</a></li>
</ul>
</li>
<li>
<input type="checkbox" id="trigger-node" checked="checked">
<label for="trigger-node">Node.js</label>
<ul class="pure-tree">
<li class="pure-tree_link"><a href="/#1">(Coming soon)</a></li>
</ul>
</li>
<li>
<input type="checkbox" id="trigger-react" checked="checked">
<label for="trigger-react">React</label>
<ul class="pure-tree">
<li class="pure-tree_link"><a href="/#1">(Coming soon)</a></li>
</ul>
</li>
</ul>
</div>
<div class="overlay">
<span class="status">Loading core libs...</span>
<span class="info"></span>
<span class="right">
© <span class="version">Flow</span> <a id="footer-link" href="https://tryflow.org/">tryflow.org</a>
</span>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/ace/1.2.3/ace.js" type="text/javascript" charset="utf-8"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/ace/1.2.3/mode-typescript.js" type="text/javascript" charset="utf-8"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/ace/1.2.3/ext-language_tools.js" type="text/javascript" charset="utf-8"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/fetch/1.0.0/fetch.min.js" type="text/javascript" charset="utf-8"></script>
<script>
var isEmbedded = false;
var flowReady = false;
var flowWorker = new Worker("js/worker.js");
function onReady(fn) {
if (document.readyState != 'loading'){
fn();
} else {
document.addEventListener('DOMContentLoaded', fn);
}
}
function init() {
function flowCheckContents(annotations) {
try {
var session = editor.getSession();
Object.keys(session.$backMarkers).forEach(function(r) { session.removeMarker(r) })
session.setAnnotations(annotations);
var Range = ace.require("ace/range").Range
annotations.forEach(function(error) {
session.addMarker(
new Range(error.row, error.column, error.row, error.columnEnd + 1), 'marker-highlight-error', 'background'
);
})
} catch (e) {
console.log(e)
}
}
var editor = ace.edit("editor");
editor.setTheme("ace/theme/tomorrow_night");
editor.getSession().setMode("ace/mode/typescript");
function runFlowCheck(e) {
flowWorker.postMessage({
flowCheck: true,
text: editor.getValue()
})
var linkEnding = '/?code=' + btoa(editor.getValue());
if (!isEmbedded) {
history.pushState({}, "Tryflow", linkEnding);
}
document.querySelector('#footer-link').href = 'https://tryflow.org' + linkEnding;
}
function locationHashChanged() {
var number = location.hash ? parseInt(location.hash.replace('#',''), 10) : 1;
[].forEach.call(document.querySelectorAll('.active'), function(div) {
div.className = '';
});
fetch('/examples/' + number + '.js')
.then(function(r) { return r.text()})
.then(function(r) {
editor.setValue(r);
editor.scrollToLine(0, true, false, function() {})
editor.selection.moveCursorToPosition({row: 0, column: 0});
})
if (!isEmbedded) {
document.querySelectorAll('a[href="/#' + number + '"]')[0].className = 'active'
}
}
function parseQuery() {
if (document.location.href.indexOf('?iframe=') > -1) {
document.querySelector('.navigation').remove();
document.querySelector('#editor').style.right = 0;
isEmbedded = true;
}
if (document.location.href.indexOf('code=') > -1) {
var code = atob(decodeURIComponent(document.location.href.split('code=')[1]))
code + '\n\n\n'
editor.setValue(code);
editor.scrollToLine(0, true, false, function() {})
editor.selection.moveCursorToPosition({row: 0, column: 0});
} else {
locationHashChanged()
}
}
editor.selection.on("changeCursor", function() {
if (flowReady) {
var cursor = editor.getCursorPosition()
flowWorker.postMessage({
inferTypeAt: cursor,
text: editor.getValue(),
})
}
})
editor.$blockScrolling = Infinity;
parseQuery();
window.addEventListener("hashchange", locationHashChanged, false);
flowWorker.onmessage = function(e) {
if (e.data.flowVersion) {
document.querySelector('.version').innerHTML = 'Flow v' + e.data.flowVersion;
}
if (e.data.flowReady) {
flowReady = true;
runFlowCheck();
document.querySelector('.status').innerHTML = 'Ready!';
editor.getSession().on('change', runFlowCheck);
}
if (e.data.inferredType) {
var cursor = editor.getCursorPosition()
var type = e.data.inferredType;
document.querySelector('.info').innerHTML = type;
}
if (e.data.flowCheck) {
flowCheckContents(e.data.flowResults);
}
}
}
onReady(init)
</script>
</body>
</html>