wasm-pack cannot be launched

[fdietze]

When including the plugin like this:

module.exports.plugins.push(new WasmPackPlugin({
      crateDirectory: Path.resolve(__dirname, "crate"),
    }));

It always fails with:

wasm-pack error: Error: spawn wasm-pack ENOENT

Even though I have wasm-pack in $PATH and can launch it from the command line.
I can even launch it right before adding the plugin like this:

childProcess.spawn("wasm-pack", {stdio: [process.stdin, process.stdout, process.stderr]});

what could be wrong?

[xtuc]

The plugin depends on wasm-pack, did you install it? see https://rustwasm.github.io/wasm-pack/installer/.

It's not explicit in our README, would you mind doing a PR?

[fdietze]

Thanks for the response. As I said, wasm-pack is installed and I can run it. I can even run it from the webpack-config. But the plugin does not find it.

[xtuc]

Indeed, sorry.

The plugin also uses spawn https://github.com/wasm-tool/wasm-pack-plugin/blob/master/plugin.js#L117, I'm wondering if we add

  env: process.env

in the options here https://github.com/wasm-tool/wasm-pack-plugin/blob/master/plugin.js#L108 if it would work, could you please try that?

[fdietze]

Actually my cwd didn't exist.

The problem was a misleading error message: nodejs/node#11520

So a better error message in this plugin would be helpful here.