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

提供された tsconfig と TypeScript の例を使い、TypeScript 3.1.3 または typescript@next で問題を再現することから始めます。生成された宣言ファイルとトランスパイルされたファイルを比較します。宣言出力でブロックコメントとともにインラインコメントが保持されれば完了です。