Follow-up on question to @ava/typescript maintainers

[cspotcode]

Reminder to myself to follow-up on avajs/typescript#29

[wycats]

I've been trying to use ava with ts-node. I managed to figure out that I needed tsnode/esm, but when I write .ts tests that use imports, I seem to unavoidably get:

Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: /home/wycats/Code/wyst/node_modules/.pnpm/[email protected][email protected]/node_modules/ts-node/esm.mjs

[cspotcode]

I'll need a more complete reproduction to point you in the right direction.

[cspotcode]

@wycats looks like you're hitting an ava limitation. Tools like mocha detect if node should treat a file as CommonJS or as ESM. ava needs this to be explicitly configured.

Here is an example of ava and ts-node using import syntax compiled to and executed as CommonJS:
https://github.com/TypeStrong/ts-node-repros/runs/1964972170

Here is an example of ava and ts-node using import syntax compiled to and executed as ESM:
https://github.com/TypeStrong/ts-node-repros/runs/1964966424

[mesqueeb]

@cspotcode I have an issue with ts-node executing Ava tests, as soon as I added "type": "module" to the package json, ts-node complains that Ava doesn't have a default export.

Here is my thread on Ava, they think it's related to ts-node: avajs/ava#2698 (reply in thread)

Should I open a new issue for this?

[cspotcode]

@mesqueeb I've created an ava discussion thread. Please post your question over there. #1247

I've explained the difference between discussion threads and issues here: #1174

In short, proven * bugs and feature requests can be posted as issues, but questions should be posted in Discussions. If you're unsure if it's a bug or not, it's probably not a bug, so starting the conversation in Discussions is appropriate.

*We get a lot of issues which are posed as bugs, but are actually not. Best to start in Discussions and, where appropriate, create an issue requesting improved documentation once we you have a solution.