tsconfig.json

{
  "include": [
    "core/**/*",  // N.B.: also pulls in closure/goog/goog.js if needed.
    "closure/**/*",  // Just for ouptut directory structure.
  ],
  "exclude": [
    "core/blockly.js"
  ],
  "compilerOptions": {
    // Tells TypeScript to read JS files, as
    // normally they are ignored as source files
    "allowJs": true,

    // Generate d.ts files and sourcemaps.
    "declaration": true,
    // Generate declaration maps used for api-extractor
    "declarationMap": true,
    "sourceMap": true,

    "module": "ES2015",
    "moduleResolution": "node",
    "target": "ES2020",
    "strict": true,

    // This does not understand enums only used to define other enums, so we
    // cannot leave it enabled.
    // See: https://github.com/microsoft/TypeScript/issues/49974
    // "importsNotUsedAsValues": "error"
  }
}