The module imported with the path alias specified in paths in tsconfig.json is not being bundled

[mattp0123]

https://esbuild.github.io/try/#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

Expect the output to be:

var foo = 'foo'
console.log(foo) 

[hyrious]

I guess this is because --packages=external marks every path not starting with [./] as external before the bundle resolution works. repl link without that option

Note that baseUrl is prepended to the aliased path, so you should avoid duplicate segments between them.

[mattp0123]

@hyrious thank you for the reply, I trying to bundle my node app to esm syntax output (mjs), any suggestion?

[hyrious]

One possible way is to use --external:pkgname to manually exclude dependencies instead of using packages=external. In 99% of the cases, you only have to exclude the keys from your package.json/dependencies so:

let pkg = JSON.parse(fs.readFileSync('package.json', 'utf8'))
esbuild.build({ ...options, external: Object.keys(pkg.dependencies) })

[mattp0123]

@hyrious Thank you, I also add a banner option to avoid this issue

{
  ...options,
  banner: {
    js: "import { createRequire } from 'module';const require = createRequire(import.meta.url);",
  },
}