mirror of
https://github.com/zhigang1992/esbuild.git
synced 2026-01-12 22:46:54 +08:00
284 lines
6.7 KiB
HTML
284 lines
6.7 KiB
HTML
<!-- This is a simple playground to try out esbuild in your browser -->
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<html>
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<head>
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<meta charset="utf8">
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<title>Try esbuild live</title>
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<style>
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body {
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font: 15px/120% sans-serif;
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overflow: hidden;
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}
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h2,
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p {
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cursor: default;
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user-select: none;
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}
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textarea {
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resize: none;
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width: 100%;
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height: 100%;
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}
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textarea,
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#output .outer {
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box-sizing: border-box;
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padding: 4px;
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color: inherit;
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font-size: 13px;
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line-height: 110%;
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font-family: monospace;
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cursor: text;
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}
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#output .outer {
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white-space: pre-wrap;
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overflow-y: auto;
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}
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textarea:focus {
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outline: none;
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border: 1px solid #999;
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}
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hr {
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border: 1px solid #999;
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margin: 1em 0;
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}
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section {
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position: absolute;
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top: 0;
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bottom: 0;
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padding: 0 20px;
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box-sizing: border-box;
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}
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#input {
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left: 0;
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width: 50%;
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}
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#output {
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right: 0;
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width: 50%;
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}
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.outer {
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position: absolute;
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left: 20px;
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top: 100px;
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right: 20px;
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bottom: 20px;
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}
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#input .outer {
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right: 10px;
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}
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#output .outer {
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left: 10px;
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}
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label {
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margin-right: 20px;
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white-space: nowrap;
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}
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.terminal-error {
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font-weight: bold;
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color: #D00;
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}
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.terminal-underline {
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font-weight: bold;
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color: #0D0;
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}
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.terminal-warning {
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font-weight: bold;
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color: #D0D;
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}
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body {
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background: #EEE;
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color: #333;
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}
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textarea,
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#output .outer {
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background: #FFF;
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border: 1px solid #CCC;
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}
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.terminal-subtle {
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color: #777;
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}
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.terminal-bold {
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font-weight: bold;
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color: #000;
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}
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@media (prefers-color-scheme: dark) {
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body {
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background: #333;
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color: #DDD;
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}
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textarea,
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#output .outer {
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background: #111;
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border: 1px solid #555;
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}
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.terminal-subtle {
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color: #999;
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}
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.terminal-bold {
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color: #FFF;
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}
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}
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</style>
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</head>
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<body>
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<section id="input">
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<h2>Input</h2>
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<p>
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<label for="target">
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Target: <select id="target">
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<option>ES2015</option>
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<option>ES2016</option>
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<option>ES2017</option>
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<option>ES2018</option>
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<option>ES2019</option>
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<option>ES2020</option>
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<option selected>ESNext</option>
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</select>
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</label>
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<label for="loader">
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Loader: <select id="loader">
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<option selected>JS</option>
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<option>JSX</option>
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<option>TS</option>
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<option>TSX</option>
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</select>
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</label>
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<label for="minify">
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<input id="minify" type="checkbox">
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Minify
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</label>
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<label for="strict">
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<input id="strict" type="checkbox">
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Strict
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</label>
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</p>
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<div class="outer"><textarea autofocus spellcheck="false"></textarea></div>
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</section>
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<section id="output">
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<h2>Output</h2>
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<div class="outer"></div>
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</section>
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<script src="../npm/esbuild-wasm/lib/browser.js"></script>
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<script>
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esbuild.startService({
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wasmURL: '../npm/esbuild-wasm/esbuild.wasm',
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}).then(service => {
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const input = document.querySelector('#input textarea')
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const output = document.querySelector('#output .outer')
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const target = document.querySelector('#target')
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const loader = document.querySelector('#loader')
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const minify = document.querySelector('#minify')
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const strict = document.querySelector('#strict')
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let debounceTimeout = 0
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let isRunning = false
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let needsRun = false
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target.onchange = runIfIdle
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loader.onchange = runIfIdle
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minify.onchange = runIfIdle
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strict.onchange = runIfIdle
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input.oninput = () => {
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clearTimeout(debounceTimeout)
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debounceTimeout = setTimeout(runIfIdle, 50)
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}
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function runIfIdle() {
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clearTimeout(debounceTimeout)
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if (isRunning) {
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needsRun = true
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return
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}
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isRunning = true
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needsRun = false
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service.transform(input.value, {
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target: target.value.toLowerCase(),
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loader: loader.value.toLowerCase(),
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minify: minify.checked,
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strict: strict.checked,
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}).then(({ js, warnings }) => {
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let html = messagesToHTML(addKindToMessages(warnings, 'warning'))
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output.innerHTML = (html && html + '<hr>') + textToHTML(js);
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}, ({ errors, warnings }) => {
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output.innerHTML = messagesToHTML(addKindToMessages(errors, 'error').concat(addKindToMessages(warnings, 'warning')));
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}).then(() => {
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isRunning = false
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if (needsRun) runIfIdle()
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})
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}
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function textToHTML(text) {
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return text.replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>')
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}
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function renderTabs(text) {
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let result = ''
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for (let c of text) {
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if (c === '\t') result += ' '.repeat(8 - result.length % 8)
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else result += c
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}
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return result
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}
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function addKindToMessages(messages, kind) {
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return messages.map(({ text, location }) => ({ text, location, kind }))
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}
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function messagesToHTML(messages) {
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return messages.sort((a, b) => {
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let al = a.location, bl = b.location
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return al && bl && (al.line - bl.line || al.column - bl.column) || (a.text < b.text) - (a.text > b.text)
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}).map(({ text, location, kind }) => {
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let html = ''
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if (location) {
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html = `<span class="terminal-bold">${textToHTML(location.file)}:${location.line}:${location.column}: </span>`
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}
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html += `<span class="terminal-${kind}">${kind}: </span>`
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html += `<span class="terminal-bold">${textToHTML(text)}</span><br>`
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if (location) {
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let indent = renderTabs(location.lineText.slice(0, location.column)).length
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let underline = location.length > 1 ? '~'.repeat(location.length) : '^'
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let line = renderTabs(location.lineText)
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html += `<span class="terminal-subtle">${textToHTML(line.slice(0, indent))}</span>`
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html += `<span class="terminal-underline">${line.slice(indent, indent + location.length)}</span>`
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html += `<span class="terminal-subtle">${textToHTML(line.slice(indent + location.length))}</span>`
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html += `<br><span class="terminal-underline">${' '.repeat(indent)}${underline}</span><br>`
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}
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return html
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}).join('');
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}
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})
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</script>
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</body>
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</html>
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