Centralize logs when not in a firebase directory (#7811)

* Centralize logs when not in a firebase directory

* PR fixes

* PR fixes

Author: joehan

firebase-vscode/CHANGELOG.md

@@ -1,5 +1,7 @@
 ## NEXT
 
+- Fixed an issue where log files would be written to non-Firebase directories.
+
 ## 0.10.3
 
 - Updated internal firebase-tools dependency to 13.21.0

firebase-vscode/src/logger-wrapper.ts

@@ -1,5 +1,7 @@
 import * as path from "path";
 import * as vscode from "vscode";
+import * as fs from "fs";
+import * as os from "os";
 import { transports, format } from "winston";
 import Transport from "winston-transport";
 import stripAnsi from "strip-ansi";
@@ -45,7 +47,11 @@ export function logSetup() {
     // Re-implement file logger call from ../../src/bin/firebase.ts to not bring
     // in the entire firebase.ts file
     const rootFolders = getRootFolders();
-    const filePath = path.join(rootFolders[0], ".firebase", "logs", "vsce-debug.log");
+    // Default to a central path, but write files to a local path if we're in a Firebase directory.
+    let filePath = path.join(os.homedir(), ".cache", "firebase", "logs", "vsce-debug.log");
+    if (fs.existsSync(path.join(rootFolders[0], "firebase.json"))) { 
+      filePath = path.join(rootFolders[0], ".firebase", "logs", "vsce-debug.log");
+    }
     pluginLogger.info("Logging to path", filePath);
     cliLogger.add(
       new transports.File({