when header 'Content-Type: application/json'and returnType=string => still use angular json parse (unwrapping quote and un-escaping)

Author: Arnaud-Nauwynck

modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java

@@ -2312,7 +2312,9 @@ public CodegenOperation fromOperation(String path,
                 if (Boolean.TRUE.equals(r.isFile) && Boolean.TRUE.equals(r.isDefault)){
                     op.isResponseFile = Boolean.TRUE;
                 }
-                if (Boolean.TRUE.equals(r.isString) && Boolean.TRUE.equals(r.isDefault)){
+                if (Boolean.TRUE.equals(r.isString)
+                        && operation.getProduces().contains("plain/text") // otherwise if "application/json" => wrap text with "..", and escape
+                        && Boolean.TRUE.equals(r.isDefault)){
                     op.isResponseText = Boolean.TRUE;
                 }
             }

modules/swagger-codegen/src/main/resources/typescript-angular/api.service.mustache

@@ -314,7 +314,7 @@ export class {{classname}} {
 
 {{/hasFormParams}}
 {{#useHttpClient}}
-        return this.httpClient.{{httpMethod}}{{^isResponseFile}}<{{#returnType}}{{{returnType}}}{{#isResponseTypeFile}}|undefined{{/isResponseTypeFile}}{{/returnType}}{{^returnType}}any{{/returnType}}>{{/isResponseFile}}(`${this.basePath}{{{path}}}`,{{#isBodyAllowed}}
+        return this.httpClient.{{httpMethod}}{{#isResponseText}}/*{{/isResponseText}}{{^isResponseFile}}<{{#returnType}}{{{returnType}}}{{#isResponseTypeFile}}|undefined{{/isResponseTypeFile}}{{/returnType}}{{^returnType}}any{{/returnType}}>{{/isResponseFile}}{{#isResponseText}}*/{{/isResponseText}}(`${this.basePath}{{{path}}}`,{{#isBodyAllowed}}
             {{#bodyParam}}{{paramName}}{{/bodyParam}}{{^bodyParam}}{{#hasFormParams}}convertFormParamsToString ? formParams.toString() : formParams{{/hasFormParams}}{{^hasFormParams}}null{{/hasFormParams}}{{/bodyParam}},{{/isBodyAllowed}}
             {
 {{#hasQueryParams}}
@@ -324,7 +324,7 @@ export class {{classname}} {
                 responseType: "blob",
 {{/isResponseFile}}
 {{#isResponseText}}
-                responseType: "text",
+                responseType: 'text',
 {{/isResponseText}}
                 withCredentials: this.configuration.withCredentials,
                 headers: headers,