--eval support

[impaler]

Feature request

Ability to use typescript in using the node --eval or -e feature from node:

• https://nodejs.org/api/cli.html#-e---eval-script.

eg api:

tsx  -e "const thing: string = 'hi'; console.log(thing);"

Currently this shows the loader is not applied with the error:

[eval]:1
const thing: string = hi; console.log(thing);
      ^^^^^

SyntaxError: Missing initializer in const declaration
    at new Script (node:vm:100:7)
    at createScript (node:vm:257:10)
    at Object.runInThisContext (node:vm:305:10)
    at node:internal/process/execution:81:19
    at [eval]-wrapper:6:22
    at evalScript (node:internal/process/execution:80:60)
    at node:internal/main/eval_string:27:3

Why?

This is a feature used commonly in the node ecosystem for example code and running code snippets.

It can be also be useful for running a script without having to create a file. Right now creating a file is the only way eg related question here about Programmatic usage.

Alternatives

No response

Additional context

Initial question here https://github.com/esbuild-kit/tsx/discussions/161 where @privatenumber suggests this should be possible.

[rayrw]

Hello! I'd like to try implementing this.

[privatenumber]

Go ahead, thanks for the heads up!