tsconfig.json

{
  "exclude": ["./cypress"],
  "include": ["remix.env.d.ts", "**/*.ts", "**/*.tsx"],
  "compilerOptions": {
    "lib": ["DOM", "DOM.Iterable", "ES2019"],
    "isolatedModules": true,
    "esModuleInterop": true,
    "jsx": "react-jsx",
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "target": "ES2019",
    "strict": true,
    "baseUrl": ".",
    "paths": {
      "~/*": ["./app/*"]
    },
    "skipLibCheck": true,
    // Remix takes care of building everything in `remix build`.
    "noEmit": true,
    "forceConsistentCasingInFileNames": true,
    "allowJs": true,
  },
  // Used by Cypress.config.ts
  "ts-node": {
    // It is faster to skip typechecking.
    // Remove if you want ts-node to do typechecking.
    "transpileOnly": true,
    "compilerOptions": {
      // compilerOptions specified here will override those declared below,
      // but *only* in ts-node.  Useful if you want ts-node and tsc to use
      // different options with a single tsconfig.json.
      "module": "ES2015", // <==== added this, so it will compile to ES modules, not CommonJS
    }
  }
}