tsconfig.json

{
  "$schema": "http://json.schemastore.org/tsconfig",
  "include": ["src/**/*"],
  "compilerOptions": {
    // During development for Node v10.8 support
    "target": "es2018",
    "module": "ESNext",
    "lib": ["esnext", "dom", "dom.iterable"],
    // ensure that nobody can accidentally use this config for a build
    "noEmit": true,
    "declaration": true,
    "declarationMap": true,
    "noEmitOnError": true,
    "noErrorTruncation": true,
    // Enforce using `import type` instead of `import` for Types
    "importsNotUsedAsValues": "error",
    "allowJs": true,
    // Generate inline sourcemaps
    "sourceMap": false,
    "inlineSourceMap": true,
    "inlineSources": true,
    // Search under node_modules for non-relative imports.
    "moduleResolution": "node",
    // Enable strictest settings like strictNullChecks & noImplicitAny.
    "strict": true,
    // Disallow features that require cross-file information for emit.
    "isolatedModules": true,
    "allowSyntheticDefaultImports": true,
    // Import non-ES modules as default imports.
    "esModuleInterop": true,
    // Allow to import json files
    "resolveJsonModule": true,
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true,
    "jsx": "react-jsx",
    "jsxImportSource": "preact",
    "plugins": [
      {
        "name": "@tw-in-js/typescript-plugin"
      }
    ]
  }
}