inline comments are striped in emitted declaration files

TypeScript Version: 3.1.3

Search Terms: inline comments striped

tsconfig

{
  "compilerOptions": {
    "moduleResolution": "node",
    "module": "esnext",
    "target": "es5",
    "lib": [
      "dom",
      "es2018"
    ],
    "strict": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "suppressImplicitAnyIndexErrors": true,
    "forceConsistentCasingInFileNames": true,
    "jsx": "react",
    "sourceMap": true,
    "outDir": "dist/esm5",
    "declaration": true,
    "declarationDir": "dist/types",
    "declarationMap": true,
    "stripInternal": true,
    "resolveJsonModule": true,
    "importHelpers": true
  },
  "include": [
    "./src"
  ],
  "compileOnSave": false,
  "buildOnSave": false
}

Code:

// I'll be missing after tsc 😭

/**
 * I'll be here after tsc 😎
 */

export const api = () => { /* some code ... */ } 

Expected behavior:

Keeping both block and inline comments in declaration files in both transpiled files and declaration files

Actual behavior:

Inline comments are removed in declaration files

And correctly kept within transpiled files

Start by reproducing the issue with the provided tsconfig and TypeScript example, using TypeScript 3.1.3 or typescript@next. Compare the emitted declaration files with the transpiled files; done means inline comments are retained in declaration output alongside block comments.