mkslanc · mkslanc · Apr 8, 2026 · Apr 8, 2026
diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ace-linters-root",
-  "version": "2.3.0",
+  "version": "2.3.1",
   "scripts": {
     "build:parts": "npm run build -ws",
     "build": "npm run build:parts && vite build",

diff --git a/packages/ace-linters/package.json b/packages/ace-linters/package.json
@@ -1,7 +1,7 @@
 {
   "name": "ace-linters",
   "author": "Azat Alimov <mkslanc@gmail.com>",
-  "version": "2.1.2",
+  "version": "2.1.3",
   "scripts": {
     "clean": "rimraf build",
     "postbuild": "node postbuild.js",
@@ -29,7 +29,8 @@
     "vscode-css-languageservice": "^6.3.10",
     "vscode-json-languageservice": "^5.7.2",
     "luaparse": "^0.3.1",
-    "showdown": "^2.1.0",
+    "marked": "^18.0.0",
+    "dompurify": "^3.3.3",
     "vscode-ws-jsonrpc": "^3.4.0",
     "htmlhint": "^1.9.2",
     "@xml-tools/constraints": "^1.1.1",

diff --git a/packages/ace-linters/src/ace/hover-tooltip.ts b/packages/ace-linters/src/ace/hover-tooltip.ts
@@ -204,8 +204,9 @@ export class HoverTooltip extends Tooltip {
         element.style.display = "block";
 
         this.$setPosition(editor, position, true, range);
-
-        editor.renderer["$textLayer"].dom.$fixPositionBug(element);
+        if (editor.renderer["$textLayer"].dom.$fixPositionBug) {
+            editor.renderer["$textLayer"].dom.$fixPositionBug(element);
+        }
         popupManager.addPopup(this);
     }
 

diff --git a/packages/ace-linters/src/components/markdownConverter.ts b/packages/ace-linters/src/components/markdownConverter.ts
@@ -0,0 +1,9 @@
+import {MarkDownConverter} from "../types/converters";
+import {marked} from "marked";
+import DOMPurify from 'dompurify';
+
+export const defaultMarkdownConverter: MarkDownConverter = {
+    makeHtml(markdownText: string) {
+        return DOMPurify.sanitize(marked.parse(markdownText, {async: false}));
+    }
+}
diff --git a/packages/ace-linters/src/language-provider.ts b/packages/ace-linters/src/language-provider.ts
@@ -15,7 +15,6 @@ import {
 } from "./type-converters/lsp/lsp-converters";
 import * as lsp from "vscode-languageserver-protocol";
 
-import showdown from "showdown";
 import {createWorker} from "./cdn-worker";
 import {SignatureTooltip} from "./components/signature-tooltip";
 import {
@@ -40,6 +39,7 @@ import {popupManager} from "./ace/popupManager";
 import {extractDiagnosticQuickFixesAtPosition} from "./components/hover/hover-quick-fixes";
 import {resolveHoverModel} from "./components/hover/hover-data-resolver";
 import {createHoverViewNode} from "./components/hover/hover-view";
+import {defaultMarkdownConverter} from "./components/markdownConverter";
 
 export class LanguageProvider {
     activeEditor: Ace.Editor | null;
@@ -152,7 +152,7 @@ export class LanguageProvider {
             }
         });
 
-        this.options.markdownConverter ||= new showdown.Converter();
+        this.options.markdownConverter ||= defaultMarkdownConverter;
         if (options?.workspacePath) {
             this.workspaceUri = convertToUri(options.workspacePath);
         }

diff --git a/tests/ui-smoke/ace-linters.contract.tests.ts b/tests/ui-smoke/ace-linters.contract.tests.ts
@@ -32,6 +32,18 @@ describe("ace-linters UI contract tests", function () {
         }
     });
 
+    it("loads the UMD bundle in an AMD environment without runtime errors", async function () {
+        await harness.openScenario("ace-linters-amd");
+        await harness.sleep(1500);
+        const page = harness.getPage();
+
+        const ready = await page.evaluate(() => window.testFlags.ready === true);
+        const errors = harness.getConsoleErrors();
+
+        expect(ready, "AMD scenario should finish booting").to.equal(true);
+        expect(errors, `Console errors: ${errors.join("\n")}`).to.be.empty;
+    });
+
     it("handles YAML schema options without critical runtime errors", async function () {
         await harness.openScenario("ace-linters");
         await harness.initAceLinterFlags();

diff --git a/tests/ui-smoke/scenarios/ace-linters-amd.html b/tests/ui-smoke/scenarios/ace-linters-amd.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8"/>
+    <title>ace-linters AMD smoke</title>
+    <link rel="icon" href="data:,"/>
+</head>
+<body>
+<div id="editor" style="height: 300px;"></div>
+<script src="http://127.0.0.1:8080/vendor/ace/ace.js"></script>
+<script src="http://127.0.0.1:8080/vendor/ace/ext-language_tools.js"></script>
+<script>
+    window.testFlags = {ready: false};
+    window.__amdModules = {};
+    window.define = function (deps, factory) {
+        const exports = {};
+        factory(exports);
+        Object.assign(window.__amdModules, exports);
+        Object.assign(window, exports);
+    };
+    window.define.amd = {};
+</script>
+<script src="http://127.0.0.1:8080/build/ace-linters/ace-linters.js"></script>
+<script>
+    window.editor = ace.edit("editor", {
+        theme: "ace/theme/textmate",
+        mode: "ace/mode/text",
+        value: "console.log('Hello world' ;"
+    });
+    window.editor.setOptions({
+        enableBasicAutocompletion: true,
+        enableSnippets: true,
+        enableLiveAutocompletion: true
+    });
+
+    window.languageProvider = LanguageProvider.fromCdn("http://127.0.0.1:8080/build/ace-linters");
+    window.languageProvider.registerEditor(window.editor);
+    setTimeout(() => {
+        window.testFlags.ready = true;
+    }, 1000);
+</script>
+</body>
+</html>