Variable and Constant declarations (block/global) should be declared on common js/umd/amd/System exports same as functions

[igorzg]

TypeScript Version: 4.x, 3.x, 2.x

Search Terms:
variable / constant declarations on exports ignored using commonjs, amd, umd, System module on ES2015, ES2016, ES2017, ES2018, ES2019, ES2020
Expected behavior:
Variable and Constant declarations (block/global) should be declared on exports (it should behave same as function declarations)

let Injectable = () => console.log(Injectable.name);
exports.Injectable = Injectable;

var Injectable = () => console.log(Injectable.name);
exports.Injectable = Injectable;

const Injectable = () => console.log(Injectable.name);
exports.Injectable = Injectable;

Actual behavior:

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Injectable = void 0;
exports.Injectable = () => console.log(exports.Injectable.name);

Related Issues:
No

Code

export let Injectable = () => console.log(Injectable.name);
export const Injectable = () => console.log(Injectable.name);
export var Injectable = () => console.log(Injectable.name);

typescript ignores var, let, const declarations on export which should not be the case.

Output

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Injectable = void 0;
exports.Injectable = () => console.log(exports.Injectable.name);

Compiler Options

{
  "compilerOptions": {
    "noImplicitAny": true,
    "strictNullChecks": true,
    "strictFunctionTypes": true,
    "strictPropertyInitialization": true,
    "strictBindCallApply": true,
    "noImplicitThis": true,
    "noImplicitReturns": true,
    "alwaysStrict": true,
    "esModuleInterop": true,
    "declaration": true,
    "experimentalDecorators": true,
    "emitDecoratorMetadata": true,
    "moduleResolution": 2,
    "target": "ES2015",
    "jsx": "React",
    "module": "commonjs"
  }
}

Playground Link: Provided

[MartinJohns]

Duplicate of #39819.

[typescript-bot]

This issue has been marked as a 'Duplicate' and has seen no recent activity. It has been automatically closed for house-keeping purposes.