File
Blob: samples/repl-server/worker.js
| 1 | // Copyright (c) 2017-2023 Cloudflare, Inc. |
| 2 | // Licensed under the Apache 2.0 license found in the LICENSE file or at: |
| 3 | // https://opensource.org/licenses/Apache-2.0 |
| 4 | |
| 5 | import { default as UnsafeEval } from "workerd:unsafe-eval"; |
| 6 | import { default as util } from "node:util"; |
| 7 | |
| 8 | // https://stackoverflow.com/questions/67322922/context-preserving-eval |
| 9 | var __EVAL = s => UnsafeEval.eval(`void (__EVAL = ${__EVAL.toString()}); ${s}`); |
| 10 | |
| 11 | async function evaluate(expr) { |
| 12 | try { |
| 13 | const result = await __EVAL(expr); |
| 14 | return result; |
| 15 | } catch (err) { |
| 16 | return err; |
| 17 | } |
| 18 | } |
| 19 | |
| 20 | globalThis.consoleLogBuf = ""; |
| 21 | |
| 22 | export default { |
| 23 | async fetch(req, env) { |
| 24 | const {cmd} = await req.json(); |
| 25 | |
| 26 | globalThis.env = env; |
| 27 | |
| 28 | globalThis.console.log = (...args) => { |
| 29 | const line = args.map(a => util.inspect(a, {colors: true})).join(" "); |
| 30 | consoleLogBuf += line + "\n"; |
| 31 | }; |
| 32 | |
| 33 | const res = await evaluate(cmd); |
| 34 | |
| 35 | const response = consoleLogBuf + util.inspect(res, {colors: true}); |
| 36 | |
| 37 | globalThis.consoleLogBuf = ""; |
| 38 | |
| 39 | return new Response(response); |
| 40 | } |
| 41 | }; |