[typescript-nestjs-server] #22928 lowercase header access, check each import for unions

Author: aryobenholzner

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptNestjsServerCodegen.java

@@ -449,8 +449,10 @@ private Set<String> parseImports(CodegenModel cm) {
             for (String name : cm.imports) {
                 if (name.indexOf(" | ") >= 0) {
                     String[] parts = name.split(" \\| ");
-                    if (needToImport(parts[0])) {
-                        Collections.addAll(newImports, parts);
+                    for (String part : parts) {
+                        if (needToImport(part)) {
+                            newImports.add(part);
+                        }
                     }
                 } else {
                     newImports.add(name);

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

@@ -12,5 +12,5 @@ import { createParamDecorator, ExecutionContext } from '@nestjs/common';
 */
 export const Headers = createParamDecorator((data: string, ctx: ExecutionContext) => {
 const request = ctx.switchToHttp().getRequest();
-return data ? request.headers?.[data] : request.headers;
+return data ? request.headers?.[data.toLowerCase()] : request.headers;
 });

samples/server/petstore/typescript-nestjs-server/builds/default/decorators/headers-decorator.ts

@@ -12,5 +12,5 @@ import { createParamDecorator, ExecutionContext } from '@nestjs/common';
 */
 export const Headers = createParamDecorator((data: string, ctx: ExecutionContext) => {
 const request = ctx.switchToHttp().getRequest();
-return data ? request.headers?.[data] : request.headers;
+return data ? request.headers?.[data.toLowerCase()] : request.headers;
 });

samples/server/petstore/typescript-nestjs-server/builds/parameters/decorators/headers-decorator.ts

@@ -12,5 +12,5 @@ import { createParamDecorator, ExecutionContext } from '@nestjs/common';
 */
 export const Headers = createParamDecorator((data: string, ctx: ExecutionContext) => {
 const request = ctx.switchToHttp().getRequest();
-return data ? request.headers?.[data] : request.headers;
+return data ? request.headers?.[data.toLowerCase()] : request.headers;
 });