[BUG][TypeScript Angular] delete operation is broken

[whydoievenneedthis]

Description

The delete operations are broken. POST, PATCH and PUT supports a body as the second parameter of the call, with the options being at the third position. DELETE, however, requires the body to be put into the second option parameter.

See also:
https://angular.io/api/common/http/HttpClient

openapi-generator version

5.3.1

Generated typescript code

        return this.httpClient.delete<any>(`${this.configuration.basePath}/thingy`,
          null,
            {
                context: localVarHttpContext,
                responseType: <any>responseType_,
                withCredentials: this.configuration.withCredentials,
                headers: localVarHeaders,
                observe: observe,
                reportProgress: reportProgress
            }
        );

Expected typescript code

        return this.httpClient.delete<any>(`${this.configuration.basePath}/thingy`,
            {
                context: localVarHttpContext,
                responseType: <any>responseType_,
                withCredentials: this.configuration.withCredentials,
                headers: localVarHeaders,
                observe: observe,
                reportProgress: reportProgress,
                body: null
            }
        );

[PeterOeClausen]

Same as: #10864

[sverbach-zuehlke]

Ran into the same issues. Out of the blue I couldn't generate code for DELETE endpoints anymore. Updating to the latest @openapitools/openapi-generator-cli also did not help.

Solved it by setting the 'ngVersion' additional-property to '12.0.0' (although the project is on v14) in the command:

openapi-generator-cli generate -i http://localhost:XXXX/.../swagger.json -g typescript-angular -o src/generated/api --additional-properties=withInterfaces=true --additional-properties=ngVersion=12.0.0

setting it to any major version above "12.0.0" will break the code generation.