tsconfig resolution mechanism

[steabert]

I had a question regarding how esbuild resolves the tsconfig file assiciated with an imported file. I ran into an issue with another tool privatenumber/tsx#96, discovering that esbuild properly handles multiple TypeScript projects.

We wondered how esbuild does this. Does it look for a new tsconfig.json when a new file is imported that is not part of the files already included by the current tsconfig.json file, and then cache that?

[evanw]

For a given file, esbuild looks for the closest tsconfig.json file in a parent directories of that file. This behavior is similar to how npm locates the relevant package.json file.

[evanw]

I'm closing this issue because this question was answered.