From c8dddddbbbd065db8d107d03b02249f0b3a0c634 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Breitbart?= <jerch@rockborn.de>
Date: Sun, 10 May 2026 16:45:46 +0200
Subject: [PATCH] remove js-base64 dependency

---
 addons/addon-clipboard/package.json                |  3 ---
 addons/addon-clipboard/src/ClipboardAddon.ts       | 12 +++++-------
 addons/addon-clipboard/test/ClipboardAddon.test.ts |  2 +-
 package-lock.json                                  | 10 +---------
 4 files changed, 7 insertions(+), 20 deletions(-)

diff --git a/addons/addon-clipboard/package.json b/addons/addon-clipboard/package.json
index 176fa861a..eb207679d 100644
--- a/addons/addon-clipboard/package.json
+++ b/addons/addon-clipboard/package.json
@@ -21,8 +21,5 @@
     "package": "../../node_modules/.bin/webpack",
     "prepublishOnly": "npm run package",
     "start": "node ../../demo/start"
-  },
-  "dependencies": {
-    "js-base64": "^3.7.5"
   }
 }
diff --git a/addons/addon-clipboard/src/ClipboardAddon.ts b/addons/addon-clipboard/src/ClipboardAddon.ts
index 58425924f..123edfec5 100644
--- a/addons/addon-clipboard/src/ClipboardAddon.ts
+++ b/addons/addon-clipboard/src/ClipboardAddon.ts
@@ -5,7 +5,6 @@
 
 import type { IDisposable, ITerminalAddon, Terminal } from '@xterm/xterm';
 import { type IClipboardProvider, ClipboardSelectionType, type IBase64 } from '@xterm/addon-clipboard';
-import { Base64 as JSBase64 } from 'js-base64';
 
 export class ClipboardAddon implements ITerminalAddon {
   private _terminal?: Terminal;
@@ -87,13 +86,12 @@ export class BrowserClipboardProvider implements IClipboardProvider {
 
 export class Base64 implements IBase64 {
   public encodeText(data: string): string {
-    return JSBase64.encode(data);
+    return btoa(data);
   }
   public decodeText(data: string): string {
-    const text = JSBase64.decode(data);
-    if (!JSBase64.isValid(data) || JSBase64.encode(text) !== data) {
-      return '';
-    }
-    return text;
+    try {
+      return atob(data);
+    } catch (e) {}
+    return '';
   }
 }
diff --git a/addons/addon-clipboard/test/ClipboardAddon.test.ts b/addons/addon-clipboard/test/ClipboardAddon.test.ts
index d4d86d46b..fc14fc75c 100644
--- a/addons/addon-clipboard/test/ClipboardAddon.test.ts
+++ b/addons/addon-clipboard/test/ClipboardAddon.test.ts
@@ -20,7 +20,7 @@ test.describe('ClipboardAddon', () => {
 
   test.beforeEach(async ({}, testInfo) => {
     // DEBT: This test doesn't work since the migration to @playwright/test
-    if (ctx.browser.browserType().name() !== 'chromium') {
+    if (ctx.browser.browserType().name() === 'webkit') {
       testInfo.skip();
       return;
     }
diff --git a/package-lock.json b/package-lock.json
index ebe3acbef..23f9bbc2b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -64,10 +64,7 @@
     "addons/addon-clipboard": {
       "name": "@xterm/addon-clipboard",
       "version": "0.2.0",
-      "license": "MIT",
-      "dependencies": {
-        "js-base64": "^3.7.5"
-      }
+      "license": "MIT"
     },
     "addons/addon-fit": {
       "name": "@xterm/addon-fit",
@@ -5420,11 +5417,6 @@
         "url": "https://github.com/chalk/supports-color?sponsor=1"
       }
     },
-    "node_modules/js-base64": {
-      "version": "3.7.8",
-      "resolved": "https://registry.npmjs.org/js-base64/-/js-base64-3.7.8.tgz",
-      "integrity": "sha512-hNngCeKxIUQiEUN3GPJOkz4wF/YvdUdbNL9hsBcMQTkKzboD7T/q3OYOuuPZLUE6dBxSGpwhk5mwuDud7JVAow=="
-    },
     "node_modules/js-tokens": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",