diff --git a/client/src/commands.ts b/client/src/commands.ts
index 495d4011..7f56a24b 100644
--- a/client/src/commands.ts
+++ b/client/src/commands.ts
@@ -38,6 +38,7 @@ import { getWorkspacesEnabledInfo, setupCheckConfig } from "./enable";
 import { denoUpgradePromptAndExecute } from "./upgrade";
 import { join } from "path";
 import { readFileSync } from "fs";
+import * as process from "process";
 
 // deno-lint-ignore no-explicit-any
 export type Callback = (...args: any[]) => unknown;
diff --git a/client/src/extension.ts b/client/src/extension.ts
index 34200db6..e479619c 100644
--- a/client/src/extension.ts
+++ b/client/src/extension.ts
@@ -89,6 +89,9 @@ export async function activate(
       { scheme: "file", language: "json" },
       { scheme: "file", language: "jsonc" },
       { scheme: "file", language: "markdown" },
+      { scheme: "file", language: "html" },
+      { scheme: "file", language: "css" },
+      { scheme: "file", language: "yaml" },
       { scheme: "untitled", language: "javascript" },
       { scheme: "untitled", language: "javascriptreact" },
       { scheme: "untitled", language: "typescript" },
@@ -96,6 +99,9 @@ export async function activate(
       { scheme: "untitled", language: "json" },
       { scheme: "untitled", language: "jsonc" },
       { scheme: "untitled", language: "markdown" },
+      { scheme: "untitled", language: "html" },
+      { scheme: "untitled", language: "css" },
+      { scheme: "untitled", language: "yaml" },
       { scheme: "deno", language: "javascript" },
       { scheme: "deno", language: "javascriptreact" },
       { scheme: "deno", language: "typescript" },
@@ -103,6 +109,9 @@ export async function activate(
       { scheme: "deno", language: "json" },
       { scheme: "deno", language: "jsonc" },
       { scheme: "deno", language: "markdown" },
+      { scheme: "deno", language: "html" },
+      { scheme: "deno", language: "css" },
+      { scheme: "deno", language: "yaml" },
       { notebook: "*", language: "javascript" },
       { notebook: "*", language: "javascriptreact" },
       { notebook: "*", language: "typescript" },
diff --git a/typescript-deno-plugin/src/index.ts b/typescript-deno-plugin/src/index.ts
index f7b455c7..b4761e00 100644
--- a/typescript-deno-plugin/src/index.ts
+++ b/typescript-deno-plugin/src/index.ts
@@ -3,7 +3,9 @@
 import type { PluginSettings } from "../../client/src/shared_types";
 import type * as ts from "../node_modules/typescript/lib/tsserverlibrary";
 import * as path from "path";
+import * as process from "process";
 import * as os from "os";
+import { setImmediate } from "timers";
 import * as util from "util";
 
 /** Extract the return type from a maybe function. */