Using es modules in node with workspaces

[wdfinch]

Hi all! This is probably something super simple, but I can't figure this out after a few hours. Would really appreciate it if someone could point me in the right direction.

I have two workspaces. One exports a string constant. The other imports it and prints it. I'm using es modules to do this over common js. No matter what I try, I keep getting Error [ERR_MODULE_NOT_FOUND].

I've tried adding type: module to both package.jsons and adding the .mjs extension. I'm using yarn node to run the script. My node version is 15.14.0.

Can anyone please explain how I can use es modules with workspaces for node js scripts?

Note es modules work fine for non-workspace (relative) imports and common js does work for workspace imports.

I've attached my sample project below.

workspaces-es-modules-node.zip

[merceyz]

Yarn PnP doesn't support ESM yet (#638), I implemented it in #2161 but due to the state of loaders in Node I've left it alone in a draft state. Last time I tested it it did work so if you want to give it a try feel free to do so.

yarn set version from sources --branch 2161
yarn config set enableExperimentalESMLoader true
yarn

[wdfinch]

Gotcha. Thanks so much for the quick reply!