@agilgur5/tsconfig/src/tsconfig.library.json

My tsconfig base files, extending @tsconfig/strictest

{
  // small library-specific additions on top of the base
  "extends": "./tsconfig.json",
  // see https://www.typescriptlang.org/tsconfig to better understand tsconfigs
  "compilerOptions": {
    // output .d.ts declaration files for consumers
    "declaration": true,
    // output .d.ts.map declaration map files for consumers
    "declarationMap": true,
  },
  // read this file as a tsconfig even though it's named slightly differently
  "$schema": "https://json.schemastore.org/tsconfig",
}