fix: change working directory prior to loading the engine (#494)

client/src/test/runTests.ts

@@ -1,5 +1,6 @@
 import * as path from 'path'
 import * as fs from 'fs'
+import { tmpdir } from 'os'
 import { exec } from 'child_process'
 import { runTests } from '@vscode/test-electron'
 
@@ -43,6 +44,7 @@ async function main (): Promise<void> {
     )
     process.chdir(testWorkspace)
     await execShellCommand('npm install')
+    process.chdir(tmpdir())
     await runTests({
       version: 'stable',
       extensionDevelopmentPath,

server/src/server.ts

@@ -427,8 +427,15 @@ async function resolveSettings (
         async path => {
           let library = path2Library.get(path)
           if (library == null) {
+            // Need to load the library dynamically, making sure CWD is temporarily
+            // set to the target workspace
+            const oldCwd = process.cwd()
+            if (settings.workspaceFolder != null) {
+              process.chdir(settings.workspaceFolder.uri.fsPath)
+            }
             // eslint-disable-next-line no-new-func, @typescript-eslint/no-implied-eval
             library = (await Function(`return import('file://${path.replace(/\\/g, '\\\\')}')`)()).default
+            process.chdir(oldCwd)
             if (library?.lintText == null) {
               settings.validate = false
               connection.console.error(