From ef372848a775b94480c80bdc8d1b54e3ab6b8b19 Mon Sep 17 00:00:00 2001
From: Brian Dukes <bdukes@engagesoftware.com>
Date: Tue, 19 May 2026 12:42:59 -0500
Subject: [PATCH] Add versionFilePath to UseNode@1

Fixes #22131
---
 .../Strings/resources.resjson/en-US/resources.resjson |  2 ++
 Tasks/UseNodeV1/task.json                             |  7 +++++++
 Tasks/UseNodeV1/task.loc.json                         |  7 +++++++
 Tasks/UseNodeV1/usenode.ts                            | 11 ++++++++++-
 4 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/Tasks/UseNodeV1/Strings/resources.resjson/en-US/resources.resjson b/Tasks/UseNodeV1/Strings/resources.resjson/en-US/resources.resjson
index bf2f0db3158f..48a916e9a540 100644
--- a/Tasks/UseNodeV1/Strings/resources.resjson/en-US/resources.resjson
+++ b/Tasks/UseNodeV1/Strings/resources.resjson/en-US/resources.resjson
@@ -5,6 +5,8 @@
   "loc.instanceNameFormat": "Use Node $(versionSpec)",
   "loc.input.label.version": "Version",
   "loc.input.help.version": "Version Spec of the version to use.  Examples: 10.x, 10.15.1, >=10.15.0",
+  "loc.input.label.versionFilePath": "Version File Path",
+  "loc.input.help.versionFilePath": "File path to get version.  Example: src/.nvmrc",
   "loc.input.label.checkLatest": "Check for Latest Version",
   "loc.input.help.checkLatest": "Always checks online for the latest available version that satisfies the version spec. This is typically false unless you have a specific scenario to always get latest. This will cause it to incur download costs when potentially not necessary, especially with the hosted build pool.",
   "loc.input.label.force32bit": "Use 32 bit version on x64 agents",
diff --git a/Tasks/UseNodeV1/task.json b/Tasks/UseNodeV1/task.json
index d49219dbcd0e..664fefd46551 100644
--- a/Tasks/UseNodeV1/task.json
+++ b/Tasks/UseNodeV1/task.json
@@ -35,6 +35,13 @@
       "required": false,
       "helpMarkDown": "Version Spec of the version to use.  Examples: 10.x, 10.15.1, >=10.15.0"
     },
+    {
+      "name": "versionFilePath",
+      "type": "string",
+      "label": "Version File Path",
+      "required": false,
+      "helpMarkDown": "File path to get version.  Example: src/.nvmrc"
+    },
     {
       "name": "checkLatest",
       "type": "boolean",
diff --git a/Tasks/UseNodeV1/task.loc.json b/Tasks/UseNodeV1/task.loc.json
index 4683b7500d8a..838afd48f21e 100644
--- a/Tasks/UseNodeV1/task.loc.json
+++ b/Tasks/UseNodeV1/task.loc.json
@@ -35,6 +35,13 @@
       "required": false,
       "helpMarkDown": "ms-resource:loc.input.help.version"
     },
+    {
+      "name": "versionFilePath",
+      "type": "string",
+      "label": "ms-resource:loc.input.label.versionFilePath",
+      "required": false,
+      "helpMarkDown": "ms-resource:loc.input.help.versionFilePath"
+    },
     {
       "name": "checkLatest",
       "type": "boolean",
diff --git a/Tasks/UseNodeV1/usenode.ts b/Tasks/UseNodeV1/usenode.ts
index 99a09f57e3b6..eef88ad780d8 100644
--- a/Tasks/UseNodeV1/usenode.ts
+++ b/Tasks/UseNodeV1/usenode.ts
@@ -12,6 +12,7 @@ import * as taskLib from 'azure-pipelines-task-lib/task';
 import * as installer from './installer';
 import * as proxyutil from './proxyutil';
 import * as path from 'path';
+import * as fs from 'fs';
 
 async function run() {
     try {
@@ -20,7 +21,7 @@ async function run() {
         // If not supplied then task is still used to setup proxy, auth, etc...
         //
         taskLib.setResourcePath(path.join(__dirname, 'task.json'));
-        const version = taskLib.getInput('version', false);
+        const version = getNodeVersion(taskLib.getInput('version', false), taskLib.getInput('versionFilePath', false));
         const nodejsMirror = taskLib.getInput('nodejsMirror', false) || 'https://nodejs.org/dist/';
         const retryCountOnDownloadFails = taskLib.getInput('retryCountOnDownloadFails', false) || "5";
         const delayBetweenRetries = taskLib.getInput('delayBetweenRetries', false) || "1000";
@@ -39,4 +40,12 @@ async function run() {
     }
 }
 
+function getNodeVersion(versionSpecInput: string, versionFilePathInput: string) {
+    if (versionFilePathInput) {
+        return fs.readFileSync(versionFilePathInput, { 'encoding': 'utf8' });
+    }
+
+    return versionSpecInput;
+}
+
 run()
\ No newline at end of file