tsconfig.json

{
  "compilerOptions": {
    "allowUnreachableCode": false,
    "baseUrl": ".",
    "declaration": true,
    "declarationMap": false,
    "downlevelIteration": true,
    "experimentalDecorators": true,
    "importHelpers": true,
    "module": "es2015",
    "moduleResolution": "node",
    "noFallthroughCasesInSwitch": true,
    "noImplicitAny": true,
    "noImplicitOverride": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noPropertyAccessFromIndexSignature": true,
    "noUnusedLocals": true,
    "paths": {
      "@material/web/*": ["./*"]
    },
    "sourceMap": true,
    "inlineSources": true,
    "strict": true,
    "strictNullChecks": false,
    "target": "es2021",
    "types": ["lit", "jasmine"]
  },
  "exclude": [
    "catalog",
    "**/demo",
    "scripts/"
  ]
}