fix(no-undefined-types): support unknown and const; fixes #846

Author: brettz9

.README/rules/no-undefined-types.md

@@ -26,7 +26,7 @@ The following types are always considered defined.
 - `null`, `undefined`, `void`, `string`, `boolean`, `object`,
   `function`, `symbol`
 - `number`, `bigint`, `NaN`, `Infinity`
-- `any`, `*`
+- `any`, `*`, `never`, `unknown`, `const`
 - `this`, `true`, `false`
 - `Array`, `Object`, `RegExp`, `Date`, `Function`
 

README.md

@@ -9549,7 +9549,7 @@ The following types are always considered defined.
 - `null`, `undefined`, `void`, `string`, `boolean`, `object`,
   `function`, `symbol`
 - `number`, `bigint`, `NaN`, `Infinity`
-- `any`, `*`
+- `any`, `*`, `never`, `unknown`, `const`
 - `this`, `true`, `false`
 - `Array`, `Object`, `RegExp`, `Date`, `Function`
 
@@ -9897,14 +9897,6 @@ function foo () {
 
 }
 
-/**
- *
- *
- */
-function foo () {
-
-}
-
 /**
  * @param {MyType} foo - Bar.
  * @param {HisType} bar - Foo.
@@ -10189,6 +10181,11 @@ export class Foo {
   }
 }
 // Settings: {"jsdoc":{"mode":"typescript"}}
+
+/**
+ * @type {const}
+ */
+const a = 'string';
 ````
 
 

src/rules/noUndefinedTypes.js

@@ -14,7 +14,7 @@ const extraTypes = [
   'null', 'undefined', 'void', 'string', 'boolean', 'object',
   'function', 'symbol',
   'number', 'bigint', 'NaN', 'Infinity',
-  'any', '*', 'never',
+  'any', '*', 'never', 'unknown', 'const',
   'this', 'true', 'false',
   'Array', 'Object', 'RegExp', 'Date', 'Function',
 ];

test/rules/assertions/noUndefinedTypes.js

@@ -634,17 +634,6 @@ export default {
       }
       `,
     },
-    {
-      code: `
-      /**
-       *
-       *
-       */
-      function foo () {
-
-      }
-      `,
-    },
     {
       code: `
         /**
@@ -1215,5 +1204,13 @@ export default {
         },
       },
     },
+    {
+      code: `
+        /**
+         * @type {const}
+         */
+        const a = 'string';
+      `,
+    },
   ],
 };