refactor: split in two packages: core and cli (#223)

packages/core/src/rules/common/parameter-description.ts

@@ -0,0 +1,22 @@
+import { Oas3Rule, Oas2Rule } from '../../visitors';
+import { Oas2Parameter } from '../../typings/swagger';
+import { Oas3Parameter } from '../../typings/openapi';
+import { UserContext } from '../../walk';
+
+export const ParameterDescription: Oas3Rule | Oas2Rule = () => {
+  return {
+    Parameter(parameter: Oas2Parameter | Oas3Parameter, { report, location }: UserContext) {
+      if (parameter.description === undefined) {
+        report({
+          message: 'Parameter object description must be present.',
+          location: { reportOnKey: true },
+        });
+      } else if (!parameter.description) {
+        report({
+          message: 'Parameter object description must be non-empty string.',
+          location: location.child(['description']),
+        });
+      }
+    },
+  };
+};