tsconfig.json

{
  "compilerOptions": {
    "alwaysStrict": true,
    "declaration": true,
    "declarationMap": true,
    "downlevelIteration": true,
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true,
    "inlineSourceMap": false,
    "lib": ["DOM", "ES2019", "ES5", "ES6", "ES2020.Promise", "ESNext.AsyncIterable", "ES2019.Array"],
    "module": "CommonJS",
    "moduleResolution": "Node",
    "noEmitOnError": false,
    "noFallthroughCasesInSwitch": true,
    "noImplicitAny": false,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noUnusedLocals": false,
    "noUnusedParameters": false,
    "resolveJsonModule": true,
    "skipLibCheck": true,
    "strict": false, // FIXME: turn off temporarily after bumping up the TS version
    "strictBindCallApply": true,
    "strictFunctionTypes": false,
    "strictNullChecks": true,
    "strictPropertyInitialization": false,
    "target": "ES2018",
    "useDefineForClassFields": true,
    "outDir": "out",
    "rootDir": ".",
    "sourceMap": true
  },
  "exclude": ["node_modules", ".vscode-test", "out"]
}