How to configure "tsconfig.json" to create files in "project / src" and write the output to "project / lib"?

Question

I tried using the following in the tsconfig.json file:

...

"declaration": true,
"rootDir": "./src/",
"outDir": "./lib/",

...

The first time I execute tsc, it works fine; but the second time that I execute tsc, I get an error message when I tsccomplain that it cannot write the output because it overwrites the input file.

It seems tscto be trying to include TypeScript declaration files that are written to my lib directory.

Answer 1

Just exclude the files in the folder lib:

{
  "compilerOptions": {
      "declaration": true,
      "rootDir": "./src/",
      "outDir": "./lib/",
   }
},
"exclude": [
    "node_modules",
    "lib"
    ]
}