tsconfig.json

{
  "compilerOptions": {
    "target": "ES2017",
    "typeRoots": ["./node_modules/@types", "./types"],
    "lib": ["dom", "dom.iterable", "esnext"],
    "allowJs": true,
    "skipLibCheck": true,
    "noEmit": true,
    "esModuleInterop": true,
    "module": "esnext",
    "moduleResolution": "bundler",
    "resolveJsonModule": true,
    "isolatedModules": true,
    "jsx": "preserve",
    "incremental": true,

    /* the following are implied by "strict" */
    "strict":                             true,
    "alwaysStrict":                       true,
    "noImplicitAny":                      true,
    "noImplicitThis":                     true,
    "strictBindCallApply":                true,
    "strictFunctionTypes":                true,
    "strictNullChecks":                   true,
    "strictPropertyInitialization":       true,
    "useUnknownInCatchVariables":         true,
    "allowUnreachableCode":               false,
    "allowUnusedLabels":                  false,
    //  TODO  let's fix this
    // "exactOptionalPropertyTypes":         true,
    "noFallthroughCasesInSwitch":         true,
    "noImplicitOverride":                 true,
    "noImplicitReturns":                  true,
    "noPropertyAccessFromIndexSignature": true,
    "noUncheckedIndexedAccess":           true,
    "noUnusedLocals":                     true,
    "noUnusedParameters":                 true,

    "plugins": [ { "name": "next" } ],
    "paths": { "@/*": ["./*"] }
  },
  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx",
              ".next/types/**/*.ts", "./types/**/*.d.ts"],
  "exclude": ["node_modules"]
}