| | import express from "express" |
| | import { python } from 'pythonia' |
| |
|
| | import { daisy } from "./daisy.mts" |
| | import { alpine } from "./alpine.mts" |
| |
|
| | |
| | const { AutoModelForCausalLM } = await python('ctransformers') |
| |
|
| | |
| | const css = [ |
| | "/css/daisyui@2.6.0.css", |
| | ].map(item => `<link href="${item}" rel="stylesheet" type="text/css"/>`) |
| | .join("") |
| |
|
| | const script = [ |
| | "/js/alpinejs@3.12.2.js", |
| | "/js/tailwindcss@3.3.2.js" |
| | ].map(item => `<script src="${item}"></script>`) |
| | .join("") |
| |
|
| | |
| | const llm = await AutoModelForCausalLM.from_pretrained$( |
| | "TheBloke/WizardCoder-15B-1.0-GGML", { |
| | model_file: "WizardCoder-15B-1.0.ggmlv3.q4_0.bin", |
| | model_type: "starcoder" |
| | }) |
| |
|
| | const app = express() |
| | const port = 7860 |
| |
|
| | const timeoutInSec = 60 * 60 |
| |
|
| | console.log("timeout set to 60 minutes") |
| |
|
| | app.use(express.static("public")) |
| | |
| | const maxParallelRequests = 1 |
| |
|
| | const pending: { |
| | total: number; |
| | queue: string[]; |
| | } = { |
| | total: 0, |
| | queue: [], |
| | } |
| | |
| | const endRequest = (id: string, reason: string) => { |
| | if (!id || !pending.queue.includes(id)) { |
| | return |
| | } |
| | |
| | pending.queue = pending.queue.filter(i => i !== id) |
| | console.log(`request ${id} ended (${reason})`) |
| | } |
| |
|
| | |
| | process.on('SIGINT', () => { |
| | try { |
| | (python as any).exit() |
| | } catch (err) { |
| | |
| | |
| | } |
| | process.exit(0) |
| | }) |
| |
|
| | app.get("/debug", (req, res) => { |
| | res.write(JSON.stringify({ |
| | nbTotal: pending.total, |
| | nbPending: pending.queue.length, |
| | queue: pending.queue, |
| | })) |
| | res.end() |
| | }) |
| |
|
| | app.get("/", async (req, res) => { |
| | |
| | if (pending.queue.length >= maxParallelRequests) { |
| | res.write("sorry, max nb of parallel requests reached") |
| | res.end() |
| | return |
| | } |
| | |
| | |
| | |
| | |
| |
|
| | const id = `${pending.total++}` |
| | console.log(`new request ${id}`) |
| |
|
| | pending.queue.push(id) |
| |
|
| | const prefix = `<html><head>${css}${script}` |
| | res.write(prefix) |
| |
|
| | req.on("close", function() { |
| | endRequest(id, "browser ended the connection") |
| | }) |
| |
|
| | |
| | setTimeout(() => { |
| | endRequest(id, `timed out after ${timeoutInSec}s`) |
| | }, timeoutInSec * 1000) |
| |
|
| |
|
| | const finalPrompt = `# Context |
| | Generate a webpage written in English about: ${req.query.prompt}. |
| | # Documentation |
| | ${daisy} |
| | # Guidelines |
| | - Do not write a tutorial or repeat the instruction, but directly write the final code within a script tag |
| | - Use a color scheme consistent with the brief and theme |
| | - You need to use Tailwind CSS and DaisyUI for the UI, pure vanilla JS and AlpineJS for the JS. |
| | - You vanilla JS code will be written directly inside the page, using <script type="text/javascript">...</script> |
| | - You MUST use English, not Latin! (I repeat: do NOT write lorem ipsum!) |
| | - No need to write code comments, and try to make the code compact (short function names etc) |
| | - Use a central layout by wrapping everything in a \`<div class="flex flex-col justify-center">\` |
| | # Result output |
| | ${prefix}` |
| |
|
| | |
| | try { |
| | |
| | const inputTokens = await llm.tokenize(finalPrompt) |
| | console.log("initializing the generator (may take 30s or more)") |
| | const generator = await llm.generate(inputTokens) |
| | console.log("generator initialized, beginning token streaming..") |
| | for await (const token of generator) { |
| | if (!pending.queue.includes(id)) { |
| | break |
| | } |
| | const tmp = await llm.detokenize(token) |
| | process.stdout.write(tmp) |
| | res.write(tmp) |
| | } |
| |
|
| | endRequest(id, `normal end of the LLM stream for request ${id}`) |
| | } catch (e) { |
| | endRequest(id, `premature end of the LLM stream for request ${id} (${e})`) |
| | } |
| |
|
| | try { |
| | res.end() |
| | } catch (err) { |
| | console.log(`couldn't end the HTTP stream for request ${id} (${err})`) |
| | } |
| | |
| | }) |
| |
|
| | app.listen(port, () => { console.log(`Open http://localhost:${port}/?prompt=a%20landing%20page%20for%20a%20company%20called%20Hugging%20Face`) }) |
| |
|
| |
|
