tsconfig.json

{
  "compilerOptions": {
    "allowJs": true,
    "downlevelIteration": true,
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true,
    "jsx": "react",
    "lib": ["DOM", "DOM.iterable"],
    "moduleResolution": "node",
    "noImplicitAny": false, // TODO: Enable once all existing code is typed
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "strictNullChecks": true,
    "strictPropertyInitialization": true, // Requires `--strictNullChecks` be enabled in order to take effect
    "target": "ES2021" // Since lowest browser support is for Safari 14
  },
  "files": [
    "client/src/index.ts",
    "client/src/custom.d.ts",
    "client/storybook/stories.d.ts"
  ],
  "include": ["src", "wagtail"],
  "exclude": [
    "node_modules",
    "static",
    // Files with template syntax.
    "wagtail/contrib/search_promotions/templates/wagtailsearchpromotions/includes/searchpromotions_formset.js"
  ]
}