imported could not be resolved

[z543]

// Install with npm
npm i classcat

// foo.tsx
import classcat from 'classcat'

bundle with rollup(transpile with typescript)

show warning: 'classcat' is imported by src\js\foo.tsx, but could not be resolved – treating it as an external dependency

no problem with other import

[jorgebucaran]

@z543 I have no idea. This is probably an error in your rollup configuration. Do you have a sample project I can clone and check myself?

[z543]

it seems my mistake, I change code to

import classcat from 'classcat/src/index.js'

not warning

[jorgebucaran]

@z543 That sounds like an issue in how tsc is resolving the baseUrl. Can you show me your tsconfig.json?

[z543]

sorry, it still my fault.

according to treating-module-as-external-dependency

I add plugin 'rollup-plugin-node-resolve', and there is no problem

[jorgebucaran]

@z543 So, is it solved?

[z543]

yes

[jorgebucaran]

🎉🎉