draft rule

Author: margaretjgu

validator/rules/no-generic-number.js

@@ -0,0 +1,59 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+import { ESLintUtils } from '@typescript-eslint/utils';
+import * as path from 'path';
+
+const createRule = ESLintUtils.RuleCreator(name => `https://example.com/rule/${name}`)
+
+export default createRule({
+  name: 'no-generic-number',
+  create(context) {
+    return {
+      TSNumberKeyword(node) {
+        const filename = context.filename || context.getFilename();
+        const normalizedPath = path.normalize(filename);
+        
+        // allow number only in _types/Numeric.ts
+        if (normalizedPath.includes(path.join('_types', 'Numeric.ts'))) {
+          return;
+        }
+
+        context.report({ 
+          node, 
+          messageId: 'noGenericNumber',
+          data: {
+            types: 'short, byte, integer, uint, long, ulong, float, or double'
+          }
+        })
+      },
+    }
+  },
+  meta: {
+    docs: {
+      description: 'Force usage of concrete numeric types instead of generic "number" type',
+    },
+    messages: {
+      noGenericNumber: 'Generic "number" type is not allowed. Use concrete numeric types instead: {{types}}. See specification/_types/Numeric.ts for available types.'
+    },
+    type: 'problem',
+    schema: []
+  },
+  defaultOptions: []
+})
+