Doc comment missing when generating declarations for const methods from js files

[karfau]

TypeScript Version: 3.8.0-dev.20191228

Search Terms: declarations js missing jsdoc

Code

index.js(!):

/**
 * const doc comment
 */
const x = (a) => {
    return '';
};

/**
 * function doc comment
 */
function b() {
    return 0;
}

module.exports = {x, b}

tsconfig.json:

{
  "compilerOptions": {
    "target": "ES2015",
    "module": "none",
    "allowJs": true,
    "checkJs": true,
    "declaration": true,
    "outDir": "./",
    "strict": true,
    "noImplicitAny": false
  }
}

Expected behavior:
index.d.ts

/**
 * const doc comment
 */
export function x(a: any): string;
/**
 * second doc comment
 */
export function b(): number;

Actual behavior:
index.d.ts

export function x(a: any): string;
/**
 * second doc comment
 */
export function b(): number;

Playground Link: http://www.typescriptlang.org/play/?target=2&module=0&ts=3.8.0-dev.20191228&useJavaScript=true#code/PQKhCgAIUhbBPSATA9gY0mltYFMB2ALlCMOFvgM6GQAekAvJABQCGAlIwHyQDeUkQQCdchAK5D8kAOTSA3OAC+C8KAjRIlXBSTJ0mbHiIkyAMzH40hAJYopAI2ad+g4aIlSADAsXhwsFCQxABtcADpcWgAHFCFCSkY+WgAaSHtFIA

Related Issues: #22037 #5550

Current workaround:
Converting those methods to the function syntax, solves the issue for now.

[jeanp413]

This is also fixed by #30253

[karfau]

Confirmed that it works in the nightly:
http://www.typescriptlang.org/play/?ts=Nightly#code/PQKhCgAIUhbBPSATA9gY0mltYFMB2ALlCMOFvgM6GQAekAvJABQCGAlIwHyQDeUkQQCdchAK5D8kAOTSA3OAC+C8KAjRIlXBSTJ0mbHiIkyAMzH40hAJYopAI2ad+g4aIlSADAsXhwsFCQxABtcADpcWgAHFCFCSkY+WgAaSHtFIA

@DanielRosenwasser
Should this ticket be moved to the 3.8.0 milestone now?
Should this ticket be closed now?