CRA does not check for presence of emitDeclarationOnly in tsconfig

[squidsoup]

Describe the bug

I maintain a react component library, written in TypeScript. Our components use sass, and consequently we build the library using babel rather than tsc, and use tsc for generating type declarations with emitDeclarationOnly: true.

We do want to continue using CRA, however every time we touch react-scripts it adds noEmit: true to our .tsconfig which is incompatible with emitDeclarationOnly. Please note that these two keywords are incompatible with each other, settings noEmit: false is not a solution, and this is overwritten by react-scripts to true at any rate.

This makes CRA largely unusable for maintaining a TypeScript component library unfortunately.

Originally posted as a discussion.

Did you try recovering your dependencies?

n/a

Which terms did you search for in User Guide?

n/a

Environment

n/a

Steps to reproduce

1. Set emitDeclarationOnly: true in .tsconfig.
2. Run a yarn script that uses react-scripts e.g. yarn test

Expected behavior

noEmit should not be added if emitDeclarationOnly is present.

Actual behavior

noEmit: true is added to .tsconfig, breaking the build.

Reproducible demo

n/a

[stale]

This issue has been automatically marked as stale because it has not had any recent activity. It will be closed in 5 days if no further activity occurs.

[stale]

This issue has been automatically closed because it has not had any recent activity. If you have a question or comment, please open a new issue.