{
  "compilerOptions": {
    "module": "commonjs",
    "target": "es6",
    "outDir": "out",
    "noImplicitReturns": true,
    "noUnusedLocals": false,
    "noUnusedParameters": false,
    "suppressImplicitAnyIndexErrors": true,
    "lib": [
      "es6"
    ],
    "sourceMap": true,
    "strictNullChecks": true,
    "experimentalDecorators": true,
    "alwaysStrict": true,
  },
  "exclude": [
    "node_modules",
    "!node_modules/@types"
  ]
}

{
  "compilerOptions": {
    "lib": [
      "ES2019"
    ],
    "module": "commonjs",
    "target": "ES2019",
    "outDir": "out",
    "noImplicitReturns": true,
    "noUnusedLocals": false,
    "noUnusedParameters": false,
    "suppressImplicitAnyIndexErrors": true,
    "sourceMap": true,
    "strictNullChecks": true,
    "experimentalDecorators": true,
    "alwaysStrict": true,
  },
  "exclude": [
    "node_modules",
    "!node_modules/@types"
  ]
}

Update typescript target/lib to ES2019
Update typescript target/lib to ES2019

This way we don't get async/await compiled to an ugly state machine, which means a slightly nicer debug experience.