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February 19, 2021 09:32
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import { GENERATED_CSS_PREFIX } from "./constants"; | |
import * as uniroll from "uniroll"; | |
import ts from "typescript"; | |
import { svelte } from "./index"; | |
import fetch from "isomorphic-unfetch"; | |
import vm from "vm"; | |
import fs from "fs"; | |
global.fetch = fetch; | |
const App = ` | |
<script lang="ts"> | |
export let foo: string; | |
import { onMount } from 'svelte'; | |
let n = 0; | |
const onClick = () => { | |
n = n + 1 | |
} | |
let mounted = false; | |
onMount(() => { | |
mounted = true; | |
}); | |
</script> | |
{#if mounted}hydrated{/if} | |
<button on:click={onClick}>{foo}{n}</button> | |
<style> | |
button { | |
color: red; | |
} | |
</style> | |
`; | |
const resolveIdFallback = (id: string) => { | |
if (id.startsWith(GENERATED_CSS_PREFIX)) { | |
return; | |
} | |
if (id.startsWith("https://")) { | |
return id; | |
} | |
if (id === "svelte") { | |
return "https://cdn.skypack.dev/svelte"; | |
} | |
if (id === "svelte/internal") { | |
return "https://cdn.skypack.dev/svelte/internal"; | |
} | |
if (id.startsWith(".")) return; | |
}; | |
async function main() { | |
const bundled = await uniroll.bundle({ | |
input: "/index.ts", | |
resolveIdFallback, | |
extraPlugins: [ | |
svelte({ | |
emitCss: true, | |
target: ts.ScriptTarget.ES5, | |
resolveIdFallback, | |
svelteOptions: { | |
hydratable: true, | |
generate: "ssr", | |
css: false, | |
}, | |
}), | |
{ | |
name: "transform-cdn", | |
transform(code: string, id: string) { | |
if (id.startsWith("https://")) { | |
const out = ts.transpileModule(code, { | |
compilerOptions: { | |
module: ts.ModuleKind.ESNext, | |
target: ts.ScriptTarget.ES5, | |
}, | |
}); | |
return { | |
code: out.outputText, | |
map: out.sourceMapText, | |
}; | |
} | |
}, | |
} as any, | |
], | |
files: { | |
"/App.svelte": App, | |
"/index.ts": ` | |
import App from './App.svelte'; | |
// out.constructor.prototype.x = 1; | |
// Object.prototaype.x = 1; | |
out = App.render({foo: 'hello'}); | |
`, | |
}, | |
}); | |
const out = await bundled.generate({ format: "es" }); | |
const code = out.output[0].code; | |
const sandbox: any = { out: Object.create(null) }; | |
vm.runInNewContext(code, sandbox); | |
const html: string = sandbox.out.html; | |
let css = ``; | |
for (const output of out.output) { | |
if ( | |
output.type === "asset" && | |
output.fileName.startsWith("uniroll-svelte") | |
) { | |
css += output.source; | |
} | |
} | |
const bundled2 = await uniroll.bundle({ | |
input: "/index.ts", | |
extraPlugins: [ | |
svelte({ | |
emitCss: true, | |
target: ts.ScriptTarget.Latest, | |
resolveIdFallback, | |
svelteOptions: { | |
hydratable: true, | |
generate: "dom", | |
}, | |
}), | |
], | |
files: { | |
"/App.svelte": App, | |
"/index.ts": ` | |
import App from './App.svelte'; | |
new App({ | |
target: document.querySelector("main"), | |
hydrate: true, | |
props: { foo: "hello" } | |
}); | |
`, | |
}, | |
}); | |
const out2 = await bundled2.generate({ format: "iife" }); | |
const code2 = out2.output[0].code; | |
fs.writeFileSync( | |
"test.html", | |
`<html> | |
<head> | |
<style>${css}</style> | |
</head> | |
<body> | |
<button onclick="hydrate()">hydrate</button> | |
<main>${html}</main> | |
<script> | |
function hydrate() { | |
/*<!--*/ | |
${code2} | |
/*-->*/ | |
} | |
</script> | |
</body> | |
</html>` | |
); | |
// out.output[0].code | |
} | |
main().catch(console.error); |
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