Migrate to ESLint 9 and fix linting issues

eslint.config.js

@@ -0,0 +1,22 @@
+import js from '@eslint/js'
+import globals from 'globals'
+
+export default [js.configs.recommended, { ignores: ['vendor'] }, {
+    languageOptions: {
+        globals: globals.browser,
+    },
+    linterOptions: {
+        reportUnusedDisableDirectives: true,
+    },
+    rules: {
+        semi: ['error', 'never'],
+        indent: ['warn', 4, { flatTernaryExpressions: true, SwitchCase: 1 }],
+        quotes: ['warn', 'single', { avoidEscape: true }],
+        'comma-dangle': ['warn', 'always-multiline'],
+        'no-trailing-spaces': 'warn',
+        'no-unused-vars': 'warn',
+        'no-console': ['warn', { allow: ['debug', 'warn', 'error', 'assert'] }],
+        'no-constant-condition': ['error', { checkLoops: false }],
+        'no-empty': ['error', { allowEmptyCatch: true }],
+    },
+}]

mobi.js

@@ -785,7 +785,7 @@ class MOBI6 {
             const recindex = img.getAttribute('recindex')
             try {
                 img.src = await this.loadRecindex(recindex)
-            } catch (e) {
+            } catch {
                 console.warn(`Failed to load image ${recindex}`)
             }
         }
@@ -795,7 +795,7 @@ class MOBI6 {
             try {
                 media.src = await this.loadRecindex(mediarecindex)
                 if (recindex) media.poster = await this.loadRecindex(recindex)
-            } catch (e) {
+            } catch {
                 console.warn(`Failed to load media ${mediarecindex}`)
             }
         }

package.json

@@ -0,0 +1,37 @@
+{
+  "name": "foliate",
+  "version": "0.0.0",
+  "description": "Render e-books in the browser",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/johnfactotum/foliate-js.git"
+  },
+  "bugs": {
+    "url": "https://github.com/johnfactotum/foliate-js/issues"
+  },
+  "homepage": "https://github.com/johnfactotum/foliate-js#readme",
+  "author": "John Factotum",
+  "license": "MIT",
+  "type": "module",
+  "exports": {
+    "./*.js": "./*.js"
+  },
+  "devDependencies": {
+    "@eslint/js": "^9.1.0",
+    "globals": "^15.0.0"
+  },
+  "keywords": [
+    "ebook",
+    "reader",
+    "epub",
+    "cfi",
+    "mobi",
+    "azw",
+    "azw3",
+    "fb2",
+    "cbz",
+    "dictd",
+    "stardict",
+    "opds"
+  ]
+}

view.js

@@ -67,11 +67,6 @@ export class View extends HTMLElement {
     #tocProgress
     #pageProgress
     #searchResults = new Map()
-    #ssml
-    #speechDoc
-    #speechRanges
-    #speechGranularity
-    #lastSpeechMark
     isFixedLayout = false
     lastLocation
     history = new History()