Fix exclusion for non-<img> elements with role="img"

imageIdentifier() only checked currentSrc/src, which don't exist on
inline <svg role="img"> icons (common for social-media links). The
exclude click therefore silently no-op'd for those. Fall back to the
surrounding link's href or the element's aria-label as the identity.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1 @@
+node_modules/

package-lock.json

@@ -0,0 +1,133 @@
+{
+  "name": "alttextchecker",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "alttextchecker",
+      "version": "1.0.0",
+      "license": "ISC",
+      "devDependencies": {
+        "terser": "^5.49.0"
+      }
+    },
+    "node_modules/@jridgewell/gen-mapping": {
+      "version": "0.3.13",
+      "resolved": "https://registry.npmjs.org/@jridgewell/gen-mapping/-/gen-mapping-0.3.13.tgz",
+      "integrity": "sha512-2kkt/7niJ6MgEPxF0bYdQ6etZaA+fQvDcLKckhy1yIQOzaoKjBBjSj63/aLVjYE3qhRt5dvM+uUyfCg6UKCBbA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@jridgewell/sourcemap-codec": "^1.5.0",
+        "@jridgewell/trace-mapping": "^0.3.24"
+      }
+    },
+    "node_modules/@jridgewell/resolve-uri": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/@jridgewell/resolve-uri/-/resolve-uri-3.1.2.tgz",
+      "integrity": "sha512-bRISgCIjP20/tbWSPWMEi54QVPRZExkuD9lJL+UIxUKtwVJA8wW1Trb1jMs1RFXo1CBTNZ/5hpC9QvmKWdopKw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
+    "node_modules/@jridgewell/source-map": {
+      "version": "0.3.11",
+      "resolved": "https://registry.npmjs.org/@jridgewell/source-map/-/source-map-0.3.11.tgz",
+      "integrity": "sha512-ZMp1V8ZFcPG5dIWnQLr3NSI1MiCU7UETdS/A0G8V/XWHvJv3ZsFqutJn1Y5RPmAPX6F3BiE397OqveU/9NCuIA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@jridgewell/gen-mapping": "^0.3.5",
+        "@jridgewell/trace-mapping": "^0.3.25"
+      }
+    },
+    "node_modules/@jridgewell/sourcemap-codec": {
+      "version": "1.5.5",
+      "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.5.5.tgz",
+      "integrity": "sha512-cYQ9310grqxueWbl+WuIUIaiUaDcj7WOq5fVhEljNVgRfOUhY9fy2zTvfoqWsnebh8Sl70VScFbICvJnLKB0Og==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@jridgewell/trace-mapping": {
+      "version": "0.3.31",
+      "resolved": "https://registry.npmjs.org/@jridgewell/trace-mapping/-/trace-mapping-0.3.31.tgz",
+      "integrity": "sha512-zzNR+SdQSDJzc8joaeP8QQoCQr8NuYx2dIIytl1QeBEZHJ9uW6hebsrYgbz8hJwUQao3TWCMtmfV8Nu1twOLAw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@jridgewell/resolve-uri": "^3.1.0",
+        "@jridgewell/sourcemap-codec": "^1.4.14"
+      }
+    },
+    "node_modules/acorn": {
+      "version": "8.17.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.17.0.tgz",
+      "integrity": "sha512-xRQbDb9BnwDafYNn6Vwl839DYVjqXYb1XVGtWAZ1kcDc6iwAL4hg3B1dZlRiuENFeO2H53gFG3in621AdERVAg==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "acorn": "bin/acorn"
+      },
+      "engines": {
+        "node": ">=0.4.0"
+      }
+    },
+    "node_modules/buffer-from": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.2.tgz",
+      "integrity": "sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/commander": {
+      "version": "2.20.3",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
+      "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/source-map": {
+      "version": "0.6.1",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+      "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/source-map-support": {
+      "version": "0.5.21",
+      "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.21.tgz",
+      "integrity": "sha512-uBHU3L3czsIyYXKX88fdrGovxdSCoTGDRZ6SYXtSRxLZUzHg5P/66Ht6uoUlHu9EZod+inXhKo3qQgwXUT/y1w==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "buffer-from": "^1.0.0",
+        "source-map": "^0.6.0"
+      }
+    },
+    "node_modules/terser": {
+      "version": "5.49.0",
+      "resolved": "https://registry.npmjs.org/terser/-/terser-5.49.0.tgz",
+      "integrity": "sha512-SNiDnXyHSrxVcIOtVbULzcTmniUiwcV7Nwdyj1twVubeTmbjoa8p69KKDpfkdoOavuM4/GRm1+ykI8qqnavHoA==",
+      "dev": true,
+      "license": "BSD-2-Clause",
+      "dependencies": {
+        "@jridgewell/source-map": "^0.3.3",
+        "acorn": "^8.15.0",
+        "commander": "^2.20.0",
+        "source-map-support": "~0.5.20"
+      },
+      "bin": {
+        "terser": "bin/terser"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    }
+  }
+}

package.json

@@ -10,5 +10,8 @@
   "keywords": [],
   "author": "",
   "license": "ISC",
-  "type": "commonjs"
+  "type": "commonjs",
+  "devDependencies": {
+    "terser": "^5.49.0"
+  }
 }

src/alt-text-checker.js

@@ -69,7 +69,15 @@
 
   function imageIdentifier(img) {
     // src ist die stabilste Kennung eines Bildes über mehrere Seitenaufrufe hinweg
-    return img.currentSrc || img.src || null;
+    if (img.tagName === 'IMG') return img.currentSrc || img.src || null;
+
+    // Nicht-<img>-Elemente mit role="img" (z.B. Inline-<svg>) haben kein src.
+    // Fallback: umgebender Link oder aria-label als Kennung.
+    const link = img.closest ? img.closest('a[href]') : null;
+    if (link && link.href) return `role-img:${link.href}`;
+    const label = img.getAttribute('aria-label');
+    if (label) return `role-img:${label}`;
+    return null;
   }
 
   function isExcluded(img, exclusions) {