tsconfig.json

{
    "compilerOptions": {
      "outDir": "build/dist",
      "module": "ESNext",
      "target": "ES6",
      "lib": ["ES6", "ES7", "DOM"],
      "sourceMap": true,
      "allowJs": true,
      "jsx": "preserve",
      "moduleResolution": "node",
      "forceConsistentCasingInFileNames": true,
      "noImplicitReturns": true,
      "strict": true,
      "strictFunctionTypes": true,
      "suppressImplicitAnyIndexErrors": true,
      "noUnusedLocals": true,
      "pretty": true,
      "allowSyntheticDefaultImports": true,
      "esModuleInterop": true,
      "downlevelIteration": true,
      "resolveJsonModule": true,
      "plugins": [
        {
          "name": "typescript-plugin-css-modules",
          "options": {
            "namedExports": false,
            "classnameTransform": "camelCaseOnly"
          }
        }
      ]
    },
    "include": [
      "**/*.{ts,tsx,mdx}",
      "gatsby-node.ts",
      "gatsby-config.ts",
      "vitest.config.ts",
      "vitest-setup.ts"
    ]
  }