diff --git a/editors/code/src/commands.ts b/editors/code/src/commands.ts
index 17202e5345a..94ec5e99c6a 100644
--- a/editors/code/src/commands.ts
+++ b/editors/code/src/commands.ts
@@ -373,7 +373,7 @@ export function ssr(ctx: CtxInit): Cmd {
                         selections,
                     });
                 } catch (e) {
-                    return e.toString();
+                    return String(e);
                 }
                 return null;
             },
@@ -1156,7 +1156,7 @@ export function viewMemoryLayout(ctx: CtxInit): Cmd {
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Document</title>
-    <style>   
+    <style>
         * {
             box-sizing: border-box;
         }
diff --git a/editors/code/src/util.ts b/editors/code/src/util.ts
index b6b779e2660..b6240234aa6 100644
--- a/editors/code/src/util.ts
+++ b/editors/code/src/util.ts
@@ -1,4 +1,3 @@
-import * as lc from "vscode-languageclient/node";
 import * as vscode from "vscode";
 import { strict as nativeAssert } from "assert";
 import { exec, ExecOptions, spawnSync } from "child_process";
@@ -57,37 +56,6 @@ export const log = new (class {
     }
 })();
 
-export async function sendRequestWithRetry<TParam, TRet>(
-    client: lc.LanguageClient,
-    reqType: lc.RequestType<TParam, TRet, unknown>,
-    param: TParam,
-    token?: vscode.CancellationToken
-): Promise<TRet> {
-    // The sequence is `10 * (2 ** (2 * n))` where n is 1, 2, 3...
-    for (const delay of [40, 160, 640, 2560, 10240, null]) {
-        try {
-            return await (token
-                ? client.sendRequest(reqType, param, token)
-                : client.sendRequest(reqType, param));
-        } catch (error) {
-            if (delay === null) {
-                log.warn("LSP request timed out", { method: reqType.method, param, error });
-                throw error;
-            }
-            if (error.code === lc.LSPErrorCodes.RequestCancelled) {
-                throw error;
-            }
-
-            if (error.code !== lc.LSPErrorCodes.ContentModified) {
-                log.warn("LSP request failed", { method: reqType.method, param, error });
-                throw error;
-            }
-            await sleep(delay);
-        }
-    }
-    throw "unreachable";
-}
-
 export function sleep(ms: number) {
     return new Promise((resolve) => setTimeout(resolve, ms));
 }
diff --git a/editors/code/tests/unit/index.ts b/editors/code/tests/unit/index.ts
index 2fa223bed4a..c231927bb00 100644
--- a/editors/code/tests/unit/index.ts
+++ b/editors/code/tests/unit/index.ts
@@ -1,3 +1,4 @@
+import * as assert from "node:assert/strict";
 import { readdir } from "fs/promises";
 import * as path from "path";
 
@@ -30,6 +31,7 @@ class Suite {
                 await test.promise;
                 ok(`  ✔ ${test.name}`);
             } catch (e) {
+                assert.ok(e instanceof Error);
                 error(`  ✖︎ ${test.name}\n  ${e.stack}`);
                 failed += 1;
             }
@@ -50,6 +52,7 @@ export class Context {
             await ctx.run();
             ok(`✔ ${name}`);
         } catch (e) {
+            assert.ok(e instanceof Error);
             error(`✖︎ ${name}\n  ${e.stack}`);
             throw e;
         }
diff --git a/editors/code/tsconfig.json b/editors/code/tsconfig.json
index 4b107a5d251..87fd14072f2 100644
--- a/editors/code/tsconfig.json
+++ b/editors/code/tsconfig.json
@@ -12,7 +12,6 @@
         "newLine": "LF",
         // These disables some enhancement type checking options
         // to update typescript version without any code change.
-        "useUnknownInCatchVariables": false,
         "exactOptionalPropertyTypes": false
     },
     "exclude": ["node_modules", ".vscode-test"],