Cannot export a default abstract class inline

[danfma]

The compiler does not allow me to export a default abstract class from a file.

Example:

export default abstract class MyClass {
}

but I can do export when separating the definition from the export.

tsconfig.json

{
  "compilerOptions": {
    "module": "amd",
    "target": "es5",
    "lib": [
      "es5", "es2015"
    ],
    "jsx": "react",
    "noEmitHelpers": true,
    "noImplicitAny": false,
    "noEmitOnError": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "allowSyntheticDefaultImports": true,
    "forceConsistentCasingInFileNames": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "sourceMap": true,
    "moduleResolution": "node",
    "rootDir": "src"
  },
  "exclude": [
    "node_modules",
    "jspm_packages",
    "lib"
  ]
}

[mhegazy]

Duplicate of #3792