tsconfig.json

{
  "compilerOptions": {
    "baseUrl": ".",
    "target": "esnext" /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */,
    "module": "commonjs" /* Specify what module code is generated. */,
    "allowJs": true /* Allow JavaScript files to be a part of your program. Use the `checkJS` option to get errors from these files. */,
    "strict": true /* Enable all strict type-checking options. */,
    "jsx": "react-jsx",
    "esModuleInterop": true /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables `allowSyntheticDefaultImports` for type compatibility. */,
    "forceConsistentCasingInFileNames": true /* Ensure that casing is correct in imports. */,
    "declaration": true /* Generate .d.ts files from TypeScript and JavaScript files in your project. */,
    "strictNullChecks": true /* When type checking, take into account `null` and `undefined`. */,
    "resolveJsonModule": true /* Enable importing .json files */,
    "sourceMap": true /* Create source map files for emitted JavaScript files. */,
    "skipLibCheck": true /* Skip type checking all .d.ts files. */,
    "outDir": "./dist"
  },
  "include": ["./src/**/*", "./data/**/*", "read-textile.ts"],
  "exclude": ["./dist/**/*"],
  "paths": {
    "@reach/router": ["../node_modules/@gatsbyjs/reach-router"]
  }
}