tsconfig.json

// =============================== IMPORTANT =================================
//
// This file is only used for Wasp IDE support. You can change it to configure
// your IDE checks, but none of these options will affect the TypeScript
// compiler. Proper TS compiler configuration in Wasp is coming soon :)
{
  "compilerOptions": {
    "module": "esnext",
    "target": "esnext",
    // We're bundling all code in the end so this is the most appropriate option,
    // it's also important for autocomplete to work properly.
    "moduleResolution": "bundler",
    // JSX support
    "jsx": "preserve",
    "strict": true,
    // Allow default imports.
    "esModuleInterop": true,
    "lib": [
      "dom",
      "dom.iterable",
      "esnext"
    ],
    "allowJs": true,
    "typeRoots": [
      // This is needed to properly support Vitest testing with jest-dom matchers.
      // Types for jest-dom are not recognized automatically and Typescript complains
      // about missing types e.g. when using `toBeInTheDocument` and other matchers.
      "node_modules/@testing-library",
      // Specifying type roots overrides the default behavior of looking at the
      // node_modules/@types folder so we had to list it explicitly.
      // Source 1: https://www.typescriptlang.org/tsconfig#typeRoots 
      // Source 2: https://github.com/testing-library/jest-dom/issues/546#issuecomment-1889884843
      "node_modules/@types"
    ],
    // Since this TS config is used only for IDE support and not for
    // compilation, the following directory doesn't exist. We need to specify
    // it to prevent this error:
    // https://stackoverflow.com/questions/42609768/typescript-error-cannot-write-file-because-it-would-overwrite-input-file
    "outDir": ".wasp/phantom"
  }
}