chore(release): 1.9.3

## [1.9.3](https://github.com/obsqrbtz/goose-highlighter/compare/v1.9.2...v1.9.3) (2025-11-18)

### Bug Fixes

* use CSS Custom Highlight API to avoid dom modifications (fixes [#1](https://github.com/obsqrbtz/goose-highlighter/issues/1)) ([3f2bb60](3f2bb6080b))

CHANGELOG.md

@@ -1,3 +1,45 @@
+## [1.9.3](https://github.com/obsqrbtz/goose-highlighter/compare/v1.9.2...v1.9.3) (2025-11-18)
+
+
+### Bug Fixes
+
+* use CSS Custom Highlight API to avoid dom modifications (fixes [#1](https://github.com/obsqrbtz/goose-highlighter/issues/1)) ([3f2bb60](https://github.com/obsqrbtz/goose-highlighter/commit/3f2bb6080ba3a9ac0599ad6594f0d877c12bb62f))
+
+## [1.9.2](https://github.com/obsqrbtz/goose-highlighter/compare/v1.9.1...v1.9.2) (2025-11-14)
+
+
+### Bug Fixes
+
+* **highlight:** prevent creating extra <span>'s ([#1](https://github.com/obsqrbtz/goose-highlighter/issues/1)) ([affddd3](https://github.com/obsqrbtz/goose-highlighter/commit/affddd3dbc7de30100ca134ec65f4dc090275ca5))
+
+## [1.9.1](https://github.com/obsqrbtz/goose-highlighter/compare/v1.9.0...v1.9.1) (2025-11-05)
+
+
+### Bug Fixes
+
+* remove halowen styling ([172aa75](https://github.com/obsqrbtz/goose-highlighter/commit/172aa7583b325761af43c780db4ac61dc4bda99b))
+
+# [1.9.0](https://github.com/obsqrbtz/goose-highlighter/compare/v1.8.5...v1.9.0) (2025-10-31)
+
+
+### Features
+
+* haloween styling ([5ef380e](https://github.com/obsqrbtz/goose-highlighter/commit/5ef380e54447f45f7360dd4b7b84456aae55bfee))
+
+## [1.8.5](https://github.com/obsqrbtz/goose-highlighter/compare/v1.8.4...v1.8.5) (2025-10-29)
+
+
+### Bug Fixes
+
+* highlight colors when multiple list have different configurations ([67577c8](https://github.com/obsqrbtz/goose-highlighter/commit/67577c89cffca1ab6d40a8913e51b7c3c6f91c85))
+
+## [1.8.4](https://github.com/obsqrbtz/goose-highlighter/compare/v1.8.3...v1.8.4) (2025-10-28)
+
+
+### Bug Fixes
+
+* do not re-highlight when already processing highlights ([8be53f3](https://github.com/obsqrbtz/goose-highlighter/commit/8be53f32402c2f0f228ca003ef3805c5ff0b6e88))
+
 ## [1.8.3](https://github.com/obsqrbtz/goose-highlighter/compare/v1.8.2...v1.8.3) (2025-10-08)
 
 

README.md

@@ -1,4 +1,4 @@
-# Goose Highlighter
+# <img src="img/logo.png" alt="Goose Highlighter Logo" width="32" style="vertical-align: middle;"> Goose Highlighter
 
 Goose Highlighter is a browser extension that allows you to highlight words on any webpage.
 

manifest.json

@@ -2,7 +2,7 @@
   "manifest_version": 3,
   "name": "__MSG_extension_name__",
   "description": "__MSG_extension_description__",
-  "version": "1.8.3",
+  "version": "1.9.3",
   "default_locale": "en",
   "permissions": [
     "scripting",

package.json

@@ -8,7 +8,7 @@
     "@types/chrome": "^0.0.270",
     "eslint": "^9.30.0",
     "globals": "^16.2.0",
-    "semantic-release": "^24.2.5",
+    "semantic-release": "^24.2.9",
     "typescript": "^5.6.0"
   },
   "scripts": {

src/content/ContentScript.ts

@@ -68,7 +68,7 @@ export class ContentScript {
   }
 
   private setupScrollHandler(): void {
-    const debouncedProcess = DOMUtils.debounce(() => this.processHighlights(), 300);
+    const debouncedProcess = DOMUtils.debounce(() => this.processHighlights(), CONSTANTS.DEBOUNCE_DELAY);
     window.addEventListener('scroll', debouncedProcess);
   }
 

src/content/HighlightEngine.ts

@@ -1,29 +1,30 @@
-import { HighlightList, ActiveWord } from '../types.js';
+import { HighlightList, ActiveWord, CONSTANTS } from '../types.js';
 import { DOMUtils } from '../utils/DOMUtils.js';
 
 export class HighlightEngine {
   private styleSheet: CSSStyleSheet | null = null;
-  private wordStyleMap = new Map<string, string>();
+  private highlights = new Map<string, Highlight>();
   private observer: MutationObserver;
+  private isHighlighting = false;
 
   constructor(private onUpdate: () => void) {
     this.observer = new MutationObserver(DOMUtils.debounce((mutations: MutationRecord[]) => {
-      const hasRelevantChanges = mutations.some((mutation: MutationRecord) => {
-        if (mutation.target instanceof Element && mutation.target.hasAttribute('data-gh')) {
+      if (this.isHighlighting) return;
+
+      const hasContentChanges = mutations.some((mutation: MutationRecord) => {
+        if (mutation.type !== 'childList') return false;
+        const allNodes = [...Array.from(mutation.addedNodes), ...Array.from(mutation.removedNodes)];
+        return allNodes.some(node => {
+          if (node.nodeType === Node.TEXT_NODE) return true;
+          if (node instanceof Element) return true;
           return false;
-        }
-        const addedNodes = Array.from(mutation.addedNodes);
-        const removedNodes = Array.from(mutation.removedNodes);
-        const isOurChange = [...addedNodes, ...removedNodes].some(node => 
-          node instanceof Element && (node.hasAttribute('data-gh') || node.querySelector('[data-gh]'))
-        );
-        return !isOurChange;
+        });
       });
 
-      if (hasRelevantChanges) {
-        onUpdate();
+      if (hasContentChanges) {
+        this.onUpdate();
       }
-    }, 300));
+    }, CONSTANTS.DEBOUNCE_DELAY));
   }
 
   private initializeStyleSheet(): void {
@@ -35,28 +36,24 @@ export class HighlightEngine {
     }
   }
 
-  private updateWordStyles(activeWords: ActiveWord[]): void {
+  private updateHighlightStyles(activeWords: ActiveWord[]): void {
     this.initializeStyleSheet();
 
     while (this.styleSheet!.cssRules.length > 0) {
       this.styleSheet!.deleteRule(0);
     }
 
-    this.wordStyleMap.clear();
-    const uniqueStyles = new Map<string, string>();
+    const uniqueStyles = new Map<string, number>();
+    let styleIndex = 0;
 
     for (const word of activeWords) {
       const styleKey = `${word.background}-${word.foreground}`;
       if (!uniqueStyles.has(styleKey)) {
-        const className = `highlighted-word-${uniqueStyles.size}`;
-        uniqueStyles.set(styleKey, className);
-        
-        const rule = `.${className} { background: ${word.background}; color: ${word.foreground}; padding: 0 2px; }`;
+        uniqueStyles.set(styleKey, styleIndex);
+        const rule = `::highlight(gh-${styleIndex}) { background-color: ${word.background}; color: ${word.foreground}; }`;
         this.styleSheet!.insertRule(rule, this.styleSheet!.cssRules.length);
+        styleIndex++;
       }
-      
-      const lookup = word.text;
-      this.wordStyleMap.set(lookup, uniqueStyles.get(styleKey)!);
     }
   }
 
@@ -72,9 +69,6 @@ export class HighlightEngine {
       NodeFilter.SHOW_TEXT,
       {
         acceptNode: (node: Text) => {
-          if (node.parentNode && (node.parentNode as Element).hasAttribute('data-gh')) {
-            return NodeFilter.FILTER_REJECT;
-          }
           if (node.parentNode && ['SCRIPT', 'STYLE', 'NOSCRIPT', 'IFRAME'].includes(node.parentNode.nodeName)) {
             return NodeFilter.FILTER_REJECT;
           }
@@ -109,26 +103,36 @@ export class HighlightEngine {
   }
 
   highlight(lists: HighlightList[], matchCase: boolean, matchWhole: boolean): void {
-    this.observer.disconnect();
+    if (this.isHighlighting) return;
+    this.isHighlighting = true;
 
+    this.observer.disconnect();
     this.clearHighlightsInternal();
 
     const activeWords = this.extractActiveWords(lists);
     if (activeWords.length === 0) {
       this.startObserving();
+      this.isHighlighting = false;
       return;
     }
 
-    this.updateWordStyles(activeWords);
+    this.updateHighlightStyles(activeWords);
+
+    const styleMap = new Map<string, number>();
+    const uniqueStyles = new Map<string, number>();
+    let styleIndex = 0;
 
-    const wordMap = new Map<string, ActiveWord>();
     for (const word of activeWords) {
-      const key = matchCase ? word.text : word.text.toLowerCase();
-      wordMap.set(key, word);
+      const styleKey = `${word.background}-${word.foreground}`;
+      if (!uniqueStyles.has(styleKey)) {
+        uniqueStyles.set(styleKey, styleIndex++);
+      }
+      const lookup = matchCase ? word.text : word.text.toLowerCase();
+      styleMap.set(lookup, uniqueStyles.get(styleKey)!);
     }
 
     const flags = matchCase ? 'gu' : 'giu';
-    let wordsPattern = Array.from(wordMap.keys()).map(DOMUtils.escapeRegex).join('|');
+    let wordsPattern = Array.from(styleMap.keys()).map(DOMUtils.escapeRegex).join('|');
 
     if (matchWhole) {
       wordsPattern = `(?:(?<!\\p{L})|^)(${wordsPattern})(?:(?!\\p{L})|$)`;
@@ -138,34 +142,51 @@ export class HighlightEngine {
       const pattern = new RegExp(`(${wordsPattern})`, flags);
       const textNodes = this.getTextNodes();
 
+      const rangesByStyle = new Map<number, Range[]>();
+
       for (const node of textNodes) {
-        if (!node.nodeValue || !pattern.test(node.nodeValue)) continue;
+        if (!node.nodeValue) continue;
 
-        const span = document.createElement('span');
-        span.innerHTML = node.nodeValue.replace(pattern, (match) => {
-          const lookup = matchCase ? match : match.toLowerCase();
-          const className = this.wordStyleMap.get(lookup) || 'highlighted-word-0';
-          return `<span data-gh class="${className}">${match}</span>`;
-        });
+        const text = node.nodeValue;
+        pattern.lastIndex = 0;
+        let match;
 
-        node.parentNode?.replaceChild(span, node);
+        while ((match = pattern.exec(text)) !== null) {
+          const lookup = matchCase ? match[0] : match[0].toLowerCase();
+          const styleIdx = styleMap.get(lookup);
+
+          if (styleIdx !== undefined) {
+            const range = new Range();
+            range.setStart(node, match.index);
+            range.setEnd(node, match.index + match[0].length);
+
+            if (!rangesByStyle.has(styleIdx)) {
+              rangesByStyle.set(styleIdx, []);
+            }
+            rangesByStyle.get(styleIdx)!.push(range);
+          }
+        }
+      }
+
+      for (const [styleIdx, ranges] of rangesByStyle) {
+        const highlight = new Highlight(...ranges);
+        const highlightName = `gh-${styleIdx}`;
+        this.highlights.set(highlightName, highlight);
+        CSS.highlights.set(highlightName, highlight);
       }
     } catch (e) {
       console.error('Regex error:', e);
     }
 
     this.startObserving();
+    this.isHighlighting = false;
   }
 
   private clearHighlightsInternal(): void {
-    const highlightedElements = document.querySelectorAll('[data-gh]');
-    highlightedElements.forEach(element => {
-      const parent = element.parentNode;
-      if (parent) {
-        parent.replaceChild(document.createTextNode(element.textContent || ''), element);
-        parent.normalize();
-      }
-    });
+    for (const name of this.highlights.keys()) {
+      CSS.highlights.delete(name);
+    }
+    this.highlights.clear();
 
     if (this.styleSheet && this.styleSheet.cssRules.length > 0) {
       while (this.styleSheet.cssRules.length > 0) {
@@ -182,8 +203,6 @@ export class HighlightEngine {
     this.observer.observe(document.body, {
       childList: true,
       subtree: true,
-      characterData: true,
-      // Don't observe attribute changes to avoid triggering on our own style changes
       attributes: false
     });
   }

src/types/css-highlights.d.ts

@@ -0,0 +1,27 @@
+// CSS Highlights API type declarations
+interface Highlight {
+  new(...ranges: Range[]): Highlight;
+  add(range: Range): void;
+  clear(): void;
+  delete(range: Range): boolean;
+  has(range: Range): boolean;
+  readonly size: number;
+}
+
+interface HighlightRegistry {
+  set(name: string, highlight: Highlight): void;
+  get(name: string): Highlight | undefined;
+  delete(name: string): boolean;
+  clear(): void;
+  has(name: string): boolean;
+  readonly size: number;
+}
+
+interface CSS {
+  highlights: HighlightRegistry;
+}
+
+declare var Highlight: {
+  prototype: Highlight;
+  new(...ranges: Range[]): Highlight;
+};