Move lsp server to this repo (#5619)

rust/kcl-language-server/client/src/persistent_state.ts

@@ -0,0 +1,21 @@
+/* eslint suggest-no-throw/suggest-no-throw: 0 */
+import type * as vscode from 'vscode'
+import { log } from './util'
+
+export class PersistentState {
+  constructor(private readonly globalState: vscode.Memento) {
+    const { serverVersion } = this
+    log.info('PersistentState:', { serverVersion })
+  }
+
+  /**
+   * Version of the extension that installed the server.
+   * Used to check if we need to run patchelf again on NixOS.
+   */
+  get serverVersion(): string | undefined {
+    return this.globalState.get('serverVersion')
+  }
+  async updateServerVersion(value: string | undefined) {
+    await this.globalState.update('serverVersion', value)
+  }
+}