Fix nested arrays (#54)

Author: DangoDev

src/swagger-2.ts

@@ -94,11 +94,17 @@ function parse(spec: Swagger2, options: Swagger2Options = {}): string {
       const [refName] = getRef(items.$ref);
       return `${getType(items, refName)}[]`;
     }
+
     if (items && items.type) {
+      // if an array, keep nesting
+      if (items.type === 'array') {
+        return `${getType(items, nestedName)}[]`;
+      }
+      // else if primitive, return type
       if (TYPES[items.type]) {
         return `${TYPES[items.type]}[]`;
       }
-      // If this is an array of items, let’s add it to the stack for later
+      // otherwise if this is an array of nested types, return that interface for later
       queue.push([nextInterface, items]);
       return `${nextInterface}[]`;
     }

tests/swagger-2.test.ts

@@ -197,6 +197,33 @@ describe('Swagger 2 spec', () => {
       expect(swaggerToTS(swagger)).toBe(ts);
     });
 
+    it('handles arrays of arrays of arrays', () => {
+      const swagger: Swagger2 = {
+        definitions: {
+          Resource: {
+            properties: {
+              environments: {
+                type: 'array',
+                items: {
+                  type: 'array',
+                  items: { type: 'array', items: { type: 'string' } },
+                },
+              },
+            },
+            type: 'object',
+          },
+        },
+      };
+
+      const ts = format(`
+      export interface Resource {
+        environments?: string[][][];
+      }
+      `);
+
+      expect(swaggerToTS(swagger)).toBe(ts);
+    });
+
     it('handles allOf', () => {
       const swagger: Swagger2 = {
         definitions: {