[engSys] Bump min-version of node to 20 (Azure#34773)

This pull request updates the Node.js version requirement across
multiple files and tools in the repository. The changes ensure
compatibility with Node.js version 20 and its corresponding type
definitions, replacing the previous requirement for Node.js version 18.

### Node.js version updates:

*
[`.github/workflows/copilot-setup-steps.yml`](diffhunk://#diff-98dad98422cf59793a353f9b6bfe6a129977e92af3d5b4e38f98ae45bcb7560dL24-R24):
Updated the Node.js setup step to install version 20 instead of 18.
*
[`common/tools/dev-tool/package.json`](diffhunk://#diff-166913d39463525ab279e0a64fe3aa2c38d6283139f024b36f7da7ffed51f466L72-R72):
Changed the `@types/node` dependency to version 20.0.0.
*
[`common/tools/dev-tool/src/checks/packageJson.ts`](diffhunk://#diff-d41378520d18f30157b1619d5e5e2d8e80bf01d5fa46437b91c6c8fe940c46f4L13-R13):
Updated the `LTS_ENGINES` constant to require Node.js version
`>=20.0.0`.
*
[`common/tools/dev-tool/src/util/samples/configuration.ts`](diffhunk://#diff-e040a7476b6483b67f04ceecc9114851e313509103c7be1e4dbdb84afa924dddL11-R11):
Updated the `MIN_SUPPORTED_NODE_VERSION` constant to `20.0.0`.

### Updates to sample expectations:

* Multiple `package.json` files for JavaScript and TypeScript samples
across various directories were updated to specify `"node": ">=20.0.0"`
in the `engines` field and to use `@types/node` version `^20.0.0`.
[[1]](diffhunk://#diff-f0ad0f2ab1c38b32bb83ab42a9f91d911766352fe5ef6f9d0d2a2213a3459883L7-R7)
[[2]](diffhunk://#diff-e0c6ce163891c33d7a73c69ec934b159d2aa22c6b0351b51ecf7188f18b735d0L7-R7)
[[3]](diffhunk://#diff-e0c6ce163891c33d7a73c69ec934b159d2aa22c6b0351b51ecf7188f18b735d0L34-R34)
[[4]](diffhunk://#diff-1f432be2a8ceba6f2c09c0d2cf931556e4470afaff7168fc32edd5b081edd7ebL7-R7)
[[5]](diffhunk://#diff-567c632dfaf389684bb26a2b6258da8e9437037c2894e12851148a2fccea0945L7-R7)
[[6]](diffhunk://#diff-567c632dfaf389684bb26a2b6258da8e9437037c2894e12851148a2fccea0945L32-R32)
[[7]](diffhunk://#diff-fefd46248c1837c12e71967cfd2dee060fc6879c8cf5fcae908d0aad748d3081L7-R7)
[[8]](diffhunk://#diff-c61074406618dd0888e4ff3958c39f18b7f82f6aa9d2bdac3c6feed366a9e343L7-R7)
[[9]](diffhunk://#diff-c61074406618dd0888e4ff3958c39f18b7f82f6aa9d2bdac3c6feed366a9e343L32-R32)
[[10]](diffhunk://#diff-2fe86509406b9ddba8c13b082731ddc7ad654a3e9fc5a8c1f95804b5753b3122L7-R7)
[[11]](diffhunk://#diff-bb58485baa5844d5523a219a53618f5be41232ae9cbcede8a0b0e05a3e38ebb9L7-R7)
[[12]](diffhunk://#diff-bb58485baa5844d5523a219a53618f5be41232ae9cbcede8a0b0e05a3e38ebb9L32-R32)
[[13]](diffhunk://#diff-bb7dd1e1bb67c9eae3c7302da13a260c179e1fe42ceb09a4116636bf574db873L7-R7)
[[14]](diffhunk://#diff-49f1bee9a528694c5fe5919789597da71fceab06d1203104b7c6e33b57814480L7-R7)
[[15]](diffhunk://#diff-49f1bee9a528694c5fe5919789597da71fceab06d1203104b7c6e33b57814480L32-R32)

### Updates to tools:

*
[`common/tools/eslint-plugin-azure-sdk/package.json`](diffhunk://#diff-406d8083a1aed239689aac864a26d5c56df5405c190d28f56937f5dde016d349L80-R80):
Updated the `engines.node` field to `>=20.0.0` and changed `@types/node`
to version `^20.0.0`.
[[1]](diffhunk://#diff-406d8083a1aed239689aac864a26d5c56df5405c190d28f56937f5dde016d349L80-R80)
[[2]](diffhunk://#diff-406d8083a1aed239689aac864a26d5c56df5405c190d28f56937f5dde016d349L108-R108)
*
[`common/tools/eslint-plugin-azure-sdk/src/rules/ts-package-json-engine-is-present.ts`](diffhunk://#diff-94b347091321583470b131968952f68325c6fd35845ccd7496014f81229a4cd4L21-R21):
Updated the `LTS` constant to `>=20.0.0`.
*
[`common/tools/mcp-server/package.json`](diffhunk://#diff-c3e2299b91d1e02aa40ecd2fa4f48d06a68e054be3b736dcaae34ab1d9c369ceL33-R33):
Updated the `engines.node` field and `@types/node` dependency to reflect
Node.js version 20.
[[1]](diffhunk://#diff-c3e2299b91d1e02aa40ecd2fa4f48d06a68e054be3b736dcaae34ab1d9c369ceL33-R33)
[[2]](diffhunk://#diff-c3e2299b91d1e02aa40ecd2fa4f48d06a68e054be3b736dcaae34ab1d9c369ceL58-R58)
*
[`common/tools/vite-plugin-browser-test-map/package.json`](diffhunk://#diff-36da0ec04a470fcc51096cd2b7c7f9cbd97232042eb4f6c96466c6a2838dd2ecL45-R52):
Updated the `engines.node` field and `@types/node` dependency to version
20.

Partially resolves Azure#33017

Author: maorleger

.github/workflows/copilot-setup-steps.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Set up Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: "18"
+          node-version: "20"
 
       - name: Install Rush
         run: npm install -g @microsoft/rush

common/config/rush/pnpm-lock.yaml

@@ -69,7 +69,7 @@
     "@types/express-serve-static-core": "^5.0.6",
     "@types/fs-extra": "^11.0.4",
     "@types/minimist": "^1.2.5",
-    "@types/node": "^18.0.0",
+    "@types/node": "^20.0.0",
     "@types/semver": "^7.7.0",
     "@types/unzipper": "~0.10.11",
     "@vitest/coverage-istanbul": "^3.0.9",

common/tools/dev-tool/package.json

@@ -10,7 +10,7 @@ import { resolveRoot } from "../util/resolveProject";
 /**
  * Expected value for engines field
  */
-const LTS_ENGINES = ">=18.0.0";
+const LTS_ENGINES = ">=20.0.0";
 
 export const license = packageJsonCheck({
   description: 'License field in package.json must be set to "MIT"',

common/tools/dev-tool/src/checks/packageJson.ts

@@ -8,7 +8,7 @@ import { METADATA_KEY } from "../resolveProject";
  * The oldest Node version that we guarantee sample programs will support.
  * Samples may support older versions, but must support at least this version.
  */
-export const MIN_SUPPORTED_NODE_VERSION = "18.0.0";
+export const MIN_SUPPORTED_NODE_VERSION = "20.0.0";
 
 /**
  * An interface for the sample configuration metadata within an Azure SDK for

common/tools/dev-tool/src/util/samples/configuration.ts

@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "description": "CommonJS client library samples for JavaScript",
   "engines": {
-    "node": ">=18.0.0"
+    "node": ">=20.0.0"
   },
   "repository": {
     "type": "git",

common/tools/dev-tool/test/samples/files/expectations/cjs-forms/javascript/package.json

@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "description": "CommonJS client library samples for TypeScript",
   "engines": {
-    "node": ">=18.0.0"
+    "node": ">=20.0.0"
   },
   "scripts": {
     "build": "tsc",
@@ -31,7 +31,7 @@
     "@azure-test2/test2": "next"
   },
   "devDependencies": {
-    "@types/node": "^18.0.0",
+    "@types/node": "^20.0.0",
     "typescript": "~5.8.2",
     "rimraf": "latest"
   }

common/tools/dev-tool/test/samples/files/expectations/cjs-forms/typescript/package.json

@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "description": "Azure Template client library samples for JavaScript",
   "engines": {
-    "node": ">=18.0.0"
+    "node": ">=20.0.0"
   },
   "repository": {
     "type": "git",

common/tools/dev-tool/test/samples/files/expectations/output-customization/javascript/package.json

@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "description": "Azure Template client library samples for TypeScript",
   "engines": {
-    "node": ">=18.0.0"
+    "node": ">=20.0.0"
   },
   "scripts": {
     "build": "tsc",
@@ -29,7 +29,7 @@
     "dotenv": "latest"
   },
   "devDependencies": {
-    "@types/node": "^18.0.0",
+    "@types/node": "^20.0.0",
     "typescript": "~5.8.2",
     "rimraf": "latest"
   }

common/tools/dev-tool/test/samples/files/expectations/output-customization/typescript/package.json

@@ -4,7 +4,7 @@
   "version": "1.0.0",
   "description": "Azure Template client library samples for JavaScript",
   "engines": {
-    "node": ">=18.0.0"
+    "node": ">=20.0.0"
   },
   "repository": {
     "type": "git",