tsconfig.json

{
  // see https://www.typescriptlang.org/tsconfig to better understand tsconfigs
  "include": ["src", "types"],
  "exclude": ["test", "node_modules"],
  "compilerOptions": {
    "target": "ESNext",
    "module": "ESNext",
    "lib": ["dom", "esnext"],
    "baseUrl": "src",
    "paths": {
      "modules/*": ["modules/*"],
      "types/*": ["types/*"],
    },
    "importHelpers": true,
    // output .d.ts declaration files for consumers
    "declaration": true,
    // output .js.map sourcemap files for consumers
    "sourceMap": true,
    "outDir": "./dist",
    // match output dir to input dir. e.g. dist/index instead of dist/src/index
    "rootDir": "./src",
    // stricter type-checking for stronger correctness. Recommended by TS
    "strict": true,
    // linter checks for common issues
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    // noUnused* overlap with @typescript-eslint/no-unused-vars, can disable if duplicative
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    // use Node's module resolution algorithm, instead of the legacy TS one
    "moduleResolution": "node",
    // transpile JSX to React.createElement
    "jsx": "react",
    // interop between ESM and CJS modules. Recommended by TS
    "esModuleInterop": true,
    // significant perf increase by skipping checking .d.ts files, particularly those in node_modules. Recommended by TS
    "skipLibCheck": true,
    // error out if import and file system have a casing mismatch. Recommended by TS
    "forceConsistentCasingInFileNames": true,
    // Note: In order to transform *both* js and d.ts files, you need to add both of the below lines to plugins
    "plugins": [
      // Transform paths in output .js files
      { "transform": "typescript-transform-paths" },

      // Transform paths in output .d.ts files (Include this line if you output declarations files)
      { "transform": "typescript-transform-paths", "afterDeclarations": true }
    ]
  }
}