Remove propertyNames

README.md

@@ -450,8 +450,9 @@ Contributions welcome!
   `exclusiveMinimum` and
   `exclusiveMaximum`,
   `unevaluatedProperties`,
-  `patternProperties`
-  as defined in JSON Schema 2012-12; these are not supported in JSON Schema Draft 7
+  `patternProperties`,
+  `propertyNames`
+  as defined in JSON Schema 2020-12; these are not supported in JSON Schema Draft 7
   used in OAS 3.0
 * Webhooks are not removed. Contributions welcome!
 * The tool only supports self-contained documents. It does not follow or resolve

src/converter.ts

@@ -251,7 +251,7 @@ export class Converter {
     }
   }
   removeUnsupportedSchemaKeywords() {
-    const keywordsToRemove = ['$id', '$schema', 'unevaluatedProperties', 'contentMediaType', 'patternProperties'];
+    const keywordsToRemove = ['$id', '$schema', 'unevaluatedProperties', 'contentMediaType', 'patternProperties', 'propertyNames'];
     const schemaVisitor: SchemaVisitor = (schema: SchemaObject): SchemaObject => {
       keywordsToRemove.forEach((key) => {
         if (schema.hasOwnProperty(key)) {

test/converter.spec.ts

@@ -404,6 +404,42 @@ describe('resolver test suite', () => {
     done();
   });
 
+  test('Remove propertyNames keywords', (done) => {
+    const input = {
+      openapi: '3.1.0',
+      components: {
+        schemas: {
+          a: {
+            type: "object",
+            propertyNames: {
+              pattern: "^[A-Za-z_][A-Za-z0-9_]*$",
+            },
+            additionalProperties: {
+              type: "string",
+            }
+          },
+        },
+      },
+    };
+    const expected = {
+      openapi: '3.0.3',
+      components: {
+        schemas: {
+          a: {
+            type: "object",
+            additionalProperties: {
+              type: "string",
+            }
+          },
+        },
+      },
+    };
+    const converter = new Converter(input, { verbose: true });
+    const converted: any = converter.convert();
+    expect(converted).toEqual(expected);
+    done();
+  });
+
   test('Remove contentMediaType keywords', (done) => {
     const input = {
       openapi: '3.1.0',