Better config handling #227
Description
Currently if your tsconfig.json is invalid the error thrown by tsup is a little cryptic.
I got this from a tailing comma in my tsconfig.json. Nothing pointed to it though.
➜ api git:(master) ✗ ./node_modules/.bin/tsup ./app/index.ts
SyntaxError: Unexpected token } in JSON at position 5855
at JSON.parse (<anonymous>)
at Object.load (/Users/xo/code/_/api/node_modules/tsup/dist/chunk.4YE4QPOH.js:13508:17)
```