/package1/index.ts(2,16): error TS2343: This syntax requires an imported helper named '__awaiter' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.


==== /tsconfig.json (0 errors) ====
    {
        "compilerOptions": {
            "strict": true,
            "target": "ES2016",
            "importHelpers": true,
            "module": "commonjs",
        }
    }
    
==== /package1/index.ts (1 errors) ====
    export {};
    async function foo(): Promise<void> {}
                   ~~~
!!! error TS2343: This syntax requires an imported helper named '__awaiter' which does not exist in 'tslib'. Consider upgrading your version of 'tslib'.
    async function bar(): Promise<void> {}
    
==== /package2/index.ts (0 errors) ====
    export {};
    async function foo(): Promise<void> {}
    
==== /node_modules/tslib/package.json (0 errors) ====
    {
        "name": "tslib",
        "main": "tslib.js",
        "typings": "tslib.d.ts"
    }
    
==== /node_modules/tslib/tslib.d.ts (0 errors) ====
    export const notAHelper: any;
    
==== /node_modules/tslib/tslib.js (0 errors) ====
    module.exports.notAHelper = 3;