add nullable to schema-definition

Author: omermecitoglu

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@omer-x/next-openapi-interface-generator",
-  "version": "0.1.3",
+  "version": "0.1.4",
   "description": "OpenAPI interface generator for Next.js",
   "keywords": [
     "next",

package.json

@@ -3,6 +3,7 @@ export type SchemaDefinition = {
   format?: "date" | "unknown",
   description: string,
   readOnly: boolean,
+  nullable: boolean,
   $ref?: string,
   items?: SchemaDefinition | SchemaDefinition[],
   oneOf?: SchemaDefinition[],

src/core/openapi.ts

@@ -1,5 +1,5 @@
 import type { SchemaDefinition } from "~/core/openapi";
-import { resolveSchema } from "./schema-definition";
+import { resolveSchemaWithNull } from "./schema-definition";
 
 export type ModelProperty = {
   content: string,
@@ -11,7 +11,7 @@ export default function resolveProperties(collection: Record<string, SchemaDefin
     const isRequired = required.includes(propertyName);
     const content = [
       `${propertyName}${isRequired ? "" : "?"}:`,
-      `${resolveSchema(property)},`,
+      `${resolveSchemaWithNull(property)},`,
     ];
     if (property.readOnly) content.unshift("readonly");
     return {

src/core/resolvers/property.ts

@@ -57,6 +57,13 @@ export function resolveSchema(definition: SchemaDefinition): string {
   return "unknown";
 }
 
+export function resolveSchemaWithNull(definition: SchemaDefinition) {
+  if (definition.nullable) {
+    return `${resolveSchema(definition)} | null`
+  }
+  resolveSchema(definition)
+}
+
 export function simplifySchema(resolvedSchema: string) {
   return resolvedSchema.replace(/\[|\]/g, "");
 }