diff --git a/configs/svelte.js b/configs/svelte.js
index 25eae1b..3755e25 100644
--- a/configs/svelte.js
+++ b/configs/svelte.js
@@ -2,6 +2,14 @@
 
 const generic = require('./generic.js');
 
+let typescriptInstalled = true;
+
+try {
+  require('typescript');
+  typescriptInstalled = true;
+}
+catch { /* not installed */ }
+
 /**
  * An extension on the default yeslint! generic config, with rules specific to
  * Svelte codebases and JavaScript source code for browser environments.
@@ -12,6 +20,7 @@ const generic = require('./generic.js');
  * @type {import('eslint').Linter.Config}
  */
 const svelte = {
+  ...generic,
   parserOptions: {
     ...generic.parserOptions,
     ecmaVersion: 2020,
@@ -31,73 +40,72 @@ const svelte = {
     ...generic.plugins,
     'svelte',
   ],
-  overrides: [ {
-    files: '*.svelte',
-    parser: 'svelte-eslint-parser',
-    rules: {
-      'no-inner-declarations': 0,
-      'max-len': [
-        'warn',
-        {
-          ...generic.rules['max-len'][1],
-          code: 200,
-        },
-      ],
-      'svelte/no-inner-declarations': [
-        'error',
-        'functions',
-      ],
-      'svelte/html-quotes': [
-        'error',
-        {
-          prefer: 'double',
-          dynamic: {
-            quoted: false,
-            avoidInvalidUnquotedInHTML: false,
+  overrides: [
+    ...generic.overrides,
+    {
+      files: '*.svelte',
+      parser: 'svelte-eslint-parser',
+      parserOptions: typescriptInstalled ? {
+        parser: '@typescript-eslint/parser',
+      } : undefined,
+      rules: {
+        'no-inner-declarations': 0,
+        'svelte/no-inner-declarations': [
+          'error',
+          'functions',
+        ],
+        'svelte/html-quotes': [
+          'error',
+          {
+            prefer: 'double',
+            dynamic: {
+              quoted: false,
+              avoidInvalidUnquotedInHTML: false,
+            },
           },
-        },
-      ],
-      'svelte/no-useless-mustaches': 'warn',
-      'svelte/require-store-reactive-access': 'warn',
-      'svelte/no-reactive-literals': 'error',
-      'svelte/html-closing-bracket-spacing': 'warn',
-      'svelte/indent': [
-        'warn',
-        {
-          indent: 2,
-          ignoredNodes: [],
-          switchCase: 1,
-          alignAttributesVertically: false,
-        },
-      ],
-      'svelte/max-attributes-per-line': [
-        'warn',
-        {
-          multiline: 1,
-          singleline: 4,
-        },
-      ],
-      'svelte/first-attribute-linebreak': [
-        'warn',
-        {
-          multiline: 'below',
-          singleline: 'beside',
-        },
-      ],
-      'svelte/mustache-spacing': 'warn',
-      'svelte/no-extra-reactive-curlies': 'error',
-      'svelte/no-spaces-around-equal-signs-in-attribute': 'warn',
-      'svelte/prefer-class-directive': 'warn',
-      'svelte/shorthand-attribute': 'warn',
-      'svelte/shorthand-directive': 'warn',
-      'svelte/spaced-html-comment': 'warn',
-      'svelte/no-at-html-tags': 0,
-      'svelte/html-self-closing': [
-        'warn',
-        'all',
-      ],
+        ],
+        'svelte/no-useless-mustaches': 'warn',
+        'svelte/require-store-reactive-access': 'warn',
+        'svelte/no-reactive-literals': 'error',
+        'svelte/html-closing-bracket-spacing': 'warn',
+        'svelte/indent': [
+          'warn',
+          {
+            indent: 2,
+            ignoredNodes: [],
+            switchCase: 1,
+            alignAttributesVertically: false,
+          },
+        ],
+        'svelte/max-attributes-per-line': [
+          'warn',
+          {
+            multiline: 1,
+            singleline: 4,
+          },
+        ],
+        'svelte/first-attribute-linebreak': [
+          'warn',
+          {
+            multiline: 'below',
+            singleline: 'beside',
+          },
+        ],
+        'svelte/mustache-spacing': 'warn',
+        'svelte/no-extra-reactive-curlies': 'error',
+        'svelte/no-spaces-around-equal-signs-in-attribute': 'warn',
+        'svelte/prefer-class-directive': 'warn',
+        'svelte/shorthand-attribute': 'warn',
+        'svelte/shorthand-directive': 'warn',
+        'svelte/spaced-html-comment': 'warn',
+        'svelte/no-at-html-tags': 0,
+        'svelte/html-self-closing': [
+          'warn',
+          'all',
+        ],
+      },
     },
-  }  ],
+  ],
   rules: {
     ...generic.rules,
     strict: 0,