[typescript/angular2]JSON.NET's $type property generated with upper-case

Description

With an ASP.NET/ASP.NET Core Api Schema generated from C# models and using JSON.NET, the property "$type" is added to the swagger definition (so far so good, and working as intended).

But when the TypeScript/Angular2 Client is generated from this swagger definition, a model/interface with an uppercase T is created ($Type instead of $type). When sending such a model back to the REST service, the serialization fails on inherited classes, since $Type is not recognized. Manually renaming the property in the model to $type and it works again

Swagger-codegen version

Version: 2.2.2

Swagger declaration file content or url

  "definitions": {
    "ProcessingConfigViewModel": {
      "required": [
        "$type"
      ],
      "type": "object",
      "properties": {
        "id": {
          "format": "int32",
          "type": "integer"
        },
        "type": {
          "enum": [
            "Unknown",
            "Xslt",
            "Module"
          ],
          "type": "string"
        },
        "kind": {
          "enum": [
            "Pre",
            "Post",
            "PostMonitor"
          ],
          "type": "string"
        },
        "executionOrder": {
          "format": "int32",
          "type": "integer"
        },
        "$type": {
          "type": "string"
        }
      },
      "discriminator": "$type"
    },
    ...
}

export interface ProcessingConfigViewModel {
    id?: number;

    type?: ProcessingConfigViewModel.TypeEnum;

    kind?: ProcessingConfigViewModel.KindEnum;

    executionOrder?: number;

    $Type: string; // << Error. Should be $type

}

Command line used for generation

set JAVA_OPTS=%JAVA_OPTS% -Xmx1024M
java %JAVA_OPTS% -jar .\swagger-codegen-cli.jar generate -i standardwf\standardwf.json -l typescript-angular2 -o standardwf\output\rest-client

Suggest a Fix

Keep the same casing defined in the swagger definition.

Start with the typescript-angular2 generation command and the generated ProcessingConfigViewModel interface, comparing its property names with the Swagger definition's $type property and discriminator. Reproduce the output using the supplied JSON declaration and verify that the generated model preserves the original casing so serialization recognizes $type.