[typescript] migrate node-fetch to undici (#22408)

* migrate typescript generator to undici

* smaples

* missing comma

* upgrade types in encode test

* remove EOL node versions, add new LTS

* fix export issue in encode/decode

* d.js issue and commonjs module in tsconfig for esm dual support

* update samples merge master

* sync samples

* files samples

Author: davidgamero

.github/workflows/samples-typescript-encode-decode.yaml

@@ -16,9 +16,9 @@ jobs:
           # clients
           - samples/client/others/typescript/encode-decode/test
         node-version:
-          - 16
-          - 18
           - 20
+          - 22
+          - 24
     steps:
       - uses: actions/checkout@v5
 

modules/openapi-generator/src/main/resources/typescript/http/http.mustache

@@ -3,8 +3,7 @@
 // TODO: evaluate if we can easily get rid of this library
 import {{^supportsES6}}* as{{/supportsES6}} FormData from "form-data";
 import { URL, URLSearchParams } from 'url';
-import * as http from 'http';
-import * as https from 'https';
+import { type Dispatcher } from 'undici';
 {{/node}}
 {{/platforms}}
 import { Observable, from } from {{#useRxJS}}'rxjs'{{/useRxJS}}{{^useRxJS}}'../rxjsStub{{importFileExtension}}'{{/useRxJS}};
@@ -106,7 +105,7 @@ export class RequestContext {
     private signal: AbortSignal | undefined = undefined;
     {{#platforms}}
     {{#node}}
-    private agent: http.Agent | https.Agent | undefined = undefined;
+    private dispatcher: Dispatcher | undefined = undefined;
     {{/node}}
     {{/platforms}}
 
@@ -203,13 +202,12 @@ export class RequestContext {
 
     {{#platforms}}
     {{#node}}
-
-    public setAgent(agent: http.Agent | https.Agent) {
-        this.agent = agent;
+    public setDispatcher(dispatcher: Dispatcher): void {
+        this.dispatcher = dispatcher;
     }
 
-    public getAgent(): http.Agent | https.Agent | undefined {
-        return this.agent;
+    public getDispatcher(): Dispatcher | undefined {
+        return this.dispatcher;
     }
     {{/node}}
     {{/platforms}}

modules/openapi-generator/src/main/resources/typescript/http/isomorphic-fetch.mustache

@@ -2,7 +2,7 @@ import {HttpLibrary, RequestContext, ResponseContext} from './http{{importFileEx
 import { from, Observable } from {{#useRxJS}}'rxjs'{{/useRxJS}}{{^useRxJS}}'../rxjsStub{{importFileExtension}}'{{/useRxJS}};
 {{#platforms}}
 {{#node}}
-import fetch from "node-fetch";
+import { fetch } from 'undici';
 {{/node}}
 {{#browser}}
 import "whatwg-fetch";
@@ -22,7 +22,7 @@ export class IsomorphicFetchHttpLibrary implements HttpLibrary {
             signal: request.getSignal(),
             {{#platforms}}
             {{#node}}
-            agent: request.getAgent(),
+            dispatcher: request.getDispatcher(),
             {{/node}}
             {{#browser}}
             credentials: "same-origin"

modules/openapi-generator/src/main/resources/typescript/package.mustache

@@ -24,13 +24,11 @@
   {{/supportsES6}}
   "exports": {
     ".": {
-      {{#supportsES6}}
       "import": "./dist/index.js",
-      {{/supportsES6}}
       {{^supportsES6}}
       "require": "./dist/index.js",
       {{/supportsES6}}
-      "types": "./dist/index.d.js"
+      "types": "./dist/index.d.ts"
     }
   },
   "files": [
@@ -46,8 +44,7 @@
       {{#fetch-api}}
         {{#platforms}}
           {{#node}}
-    "node-fetch": "^2.7.0",
-    "@types/node-fetch": "^2.6.13",
+    "undici": "^7.16.0",
           {{/node}}
           {{#browser}}
     "whatwg-fetch": "^3.0.0",
@@ -61,7 +58,7 @@
     {{/frameworks}}
     {{#platforms}}
       {{#node}}
-    "@types/node": "^16.18.126",
+    "@types/node": "^20.17.10",
     "form-data": "^4.0.4",
       {{/node}}
     {{/platforms}}

modules/openapi-generator/src/main/resources/typescript/tsconfig.mustache

@@ -8,6 +8,7 @@
     {{/supportsES6}}
     {{^supportsES6}}
     "target": "es5",
+    "module": "commonjs",
     {{/supportsES6}}
     "moduleResolution": "node",
     "declaration": true,