[typescript-nestjs-server] #22928 add optional type hints

Author: aryobenholzner

modules/openapi-generator/src/main/resources/typescript-nestjs-server/api.mustache

@@ -7,7 +7,7 @@ import { {{#tsImports}}{{classname}}, {{/tsImports}} } from '../{{modelPackage}}
 {{#operation}}
 export type {{#lambda.pascalcase}}{{operationId}}{{/lambda.pascalcase}}RequestParams = {
 {{#allParams}}
-    {{paramName}}: {{{dataType}}}
+    {{paramName}}: {{{dataType}}}{{#isNullable}} | null{{/isNullable}}{{^required}} | undefined{{/required}}
 {{/allParams}}
 }
 {{/operation}}
@@ -23,7 +23,7 @@ export abstract class {{classname}} {
 {{/useSingleRequestParameter}}
 
 {{^useSingleRequestParameter}}
-  abstract {{operationId}}({{#allParams}}{{paramName}}: {{{dataType}}}, {{/allParams}} request: Request): {{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}void{{/returnType}} | Promise<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}void{{/returnType}}> | Observable<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}void{{/returnType}}>;
+  abstract {{operationId}}({{#allParams}}{{paramName}}: {{{dataType}}}{{#isNullable}} | null{{/isNullable}}{{^required}} | undefined{{/required}}, {{/allParams}} request: Request): {{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}void{{/returnType}} | Promise<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}void{{/returnType}}> | Observable<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}void{{/returnType}}>;
 {{/useSingleRequestParameter}}
 
 {{/operation}}

modules/openapi-generator/src/main/resources/typescript-nestjs-server/controller.mustache

@@ -10,7 +10,7 @@ export class {{classname}}Controller {
 {{#operations}}
 {{#operation}}
   @{{#vendorExtensions.x-http-method}}{{.}}{{/vendorExtensions.x-http-method}}{{^vendorExtensions.x-http-method}}{{httpMethod}}{{/vendorExtensions.x-http-method}}('{{path}}')
-  {{operationId}}({{#allParams}}{{#isPathParam}}@Param('{{paramName}}') {{/isPathParam}}{{#isQueryParam}}@Query('{{paramName}}') {{/isQueryParam}}{{#isBodyParam}}@Body() {{/isBodyParam}}{{paramName}}: {{{dataType}}}, {{/allParams}}@Req() request: Request): {{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}void{{/returnType}} | Promise<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}void{{/returnType}}> | Observable<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}void{{/returnType}}> {
+  {{operationId}}({{#allParams}}{{#isPathParam}}@Param('{{paramName}}') {{/isPathParam}}{{#isQueryParam}}@Query('{{paramName}}') {{/isQueryParam}}{{#isBodyParam}}@Body() {{/isBodyParam}}{{paramName}}: {{{dataType}}}{{#isNullable}} | null{{/isNullable}}{{^required}} | undefined{{/required}}, {{/allParams}}@Req() request: Request): {{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}void{{/returnType}} | Promise<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}void{{/returnType}}> | Observable<{{#returnType}}{{{returnType}}}{{/returnType}}{{^returnType}}void{{/returnType}}> {
     return this.{{classVarName}}.{{operationId}}({{#useSingleRequestParameter}}{ {{/useSingleRequestParameter}}{{#allParams}}{{paramName}}, {{/allParams}}{{#useSingleRequestParameter}}}, {{/useSingleRequestParameter}}request);
   }