Fix underscores in interface names

.eslintrc.js

@@ -4,6 +4,7 @@ module.exports = {
   plugins: ['@typescript-eslint', 'prettier'],
   rules: {
     '@typescript-eslint/camelcase': 0, // This is perfectly acceptable
+    'prettier/prettier': 'error',
   },
   env: {
     jest: true,

package.json

@@ -78,6 +78,6 @@
     "jest": "^24.8.0",
     "ts-jest": "^24.0.2",
     "tslib": "^1.10.0",
-    "typescript": "^3.5.1"
+    "typescript": "^3.5.3"
   }
 }

src/swagger-2.ts

@@ -37,9 +37,8 @@ function capitalize(str: string): string {
 }
 
 function camelCase(name: string): string {
-  return name.replace(
-    /(-|_|\.|\s)+\w/g,
-    (letter): string => letter.toUpperCase().replace(/[^0-9a-z]/gi, '')
+  return name.replace(/(-|_|\.|\s)+\w/g, (letter): string =>
+    letter.toUpperCase().replace(/[^0-9a-z]/gi, '')
   );
 }
 
@@ -68,6 +67,8 @@ function parse(spec: Swagger2, options: Swagger2Options = {}): string {
   function getType(definition: Swagger2Definition, nestedName: string): string {
     const { $ref, items, type, ...value } = definition;
 
+    const nextInterface = camelCase(nestedName); // if this becomes an interface, it’ll need to be camelCased
+
     const DEFAULT_TYPE = 'any';
 
     if ($ref) {
@@ -90,8 +91,9 @@ function parse(spec: Swagger2, options: Swagger2Options = {}): string {
       if (TYPES[items.type]) {
         return `${TYPES[items.type]}[]`;
       }
-      queue.push([nestedName, items]);
-      return `${nestedName}[]`;
+      // If this is an array of items, let’s add it to the stack for later
+      queue.push([nextInterface, items]);
+      return `${nextInterface}[]`;
     }
 
     if (Array.isArray(value.oneOf)) {
@@ -100,8 +102,8 @@ function parse(spec: Swagger2, options: Swagger2Options = {}): string {
 
     if (value.properties) {
       // If this is a nested object, let’s add it to the stack for later
-      queue.push([nestedName, { $ref, items, type, ...value }]);
-      return nestedName;
+      queue.push([nextInterface, { $ref, items, type, ...value }]);
+      return nextInterface;
     }
 
     if (type) {
@@ -121,17 +123,15 @@ function parse(spec: Swagger2, options: Swagger2Options = {}): string {
 
     // Include allOf, if specified
     if (Array.isArray(allOf)) {
-      allOf.forEach(
-        (item): void => {
-          // Add “implements“ if this references other items
-          if (item.$ref) {
-            const [refName] = getRef(item.$ref);
-            includes.push(refName);
-          } else if (item.properties) {
-            allProperties = { ...allProperties, ...item.properties };
-          }
+      allOf.forEach((item): void => {
+        // Add “implements“ if this references other items
+        if (item.$ref) {
+          const [refName] = getRef(item.$ref);
+          includes.push(refName);
+        } else if (item.properties) {
+          allProperties = { ...allProperties, ...item.properties };
         }
-      );
+      });
     }
 
     // If nothing’s here, let’s skip this one.
@@ -149,28 +149,26 @@ function parse(spec: Swagger2, options: Swagger2Options = {}): string {
     output.push(`export interface ${shouldCamelCase ? camelCase(ID) : ID}${isExtending} {`);
 
     // Populate interface
-    Object.entries(allProperties).forEach(
-      ([key, value]): void => {
-        const optional = !Array.isArray(required) || required.indexOf(key) === -1;
-        const formattedKey = shouldCamelCase ? camelCase(key) : key;
-        const name = `${sanitize(formattedKey)}${optional ? '?' : ''}`;
-        const newID = `${ID}${capitalize(formattedKey)}`;
-        const interfaceType = getType(value, newID);
-
-        if (typeof value.description === 'string') {
-          // Print out descriptions as comments, but only if there’s something there (.*)
-          output.push(`// ${value.description.replace(/\n$/, '').replace(/\n/g, '\n// ')}`);
-        }
-
-        // Handle enums in the same definition
-        if (Array.isArray(value.enum)) {
-          output.push(`${name}: ${value.enum.map(option => JSON.stringify(option)).join(' | ')};`);
-          return;
-        }
+    Object.entries(allProperties).forEach(([key, value]): void => {
+      const optional = !Array.isArray(required) || required.indexOf(key) === -1;
+      const formattedKey = shouldCamelCase ? camelCase(key) : key;
+      const name = `${sanitize(formattedKey)}${optional ? '?' : ''}`;
+      const newID = `${ID}${capitalize(formattedKey)}`;
+      const interfaceType = getType(value, newID);
+
+      if (typeof value.description === 'string') {
+        // Print out descriptions as comments, but only if there’s something there (.*)
+        output.push(`// ${value.description.replace(/\n$/, '').replace(/\n/g, '\n// ')}`);
+      }
 
-        output.push(`${name}: ${interfaceType};`);
+      // Handle enums in the same definition
+      if (Array.isArray(value.enum)) {
+        output.push(`${name}: ${value.enum.map(option => JSON.stringify(option)).join(' | ')};`);
+        return;
       }
-    );
+
+      output.push(`${name}: ${interfaceType};`);
+    });
 
     if (additionalProperties) {
       if ((additionalProperties as boolean) === true) {
@@ -188,14 +186,12 @@ function parse(spec: Swagger2, options: Swagger2Options = {}): string {
   }
 
   // Begin parsing top-level entries
-  Object.entries(definitions).forEach(
-    (entry): void => {
-      // Ignore top-level array definitions
-      if (entry[1].type === 'object') {
-        queue.push(entry);
-      }
+  Object.entries(definitions).forEach((entry): void => {
+    // Ignore top-level array definitions
+    if (entry[1].type === 'object') {
+      queue.push(entry);
     }
-  );
+  });
   queue.sort((a, b) => a[0].localeCompare(b[0]));
   while (queue.length > 0) {
     buildNextInterface();

tests/swagger-2.test.ts

@@ -116,7 +116,7 @@ describe('Swagger 2 spec', () => {
       expect(swaggerToTS(swagger)).toBe(ts);
     });
 
-    it('handles arrays of complex items', () => {
+    it('handles arrays of references', () => {
       const swagger: Swagger2 = {
         definitions: {
           Team: {
@@ -145,6 +145,58 @@ describe('Swagger 2 spec', () => {
       expect(swaggerToTS(swagger)).toBe(ts);
     });
 
+    it('handles nested objects', () => {
+      const swagger: Swagger2 = {
+        definitions: {
+          User: {
+            properties: {
+              remote_id: {
+                type: 'object',
+                properties: { id: { type: 'string' } },
+              },
+            },
+            type: 'object',
+          },
+        },
+      };
+
+      const ts = format(`
+      export interface User {
+        remote_id?: UserRemoteId;
+      }
+      export interface UserRemoteId {
+        id?: string;
+      }`);
+
+      expect(swaggerToTS(swagger)).toBe(ts);
+    });
+
+    it('handles arrays of nested objects', () => {
+      const swagger: Swagger2 = {
+        definitions: {
+          User: {
+            properties: {
+              remote_ids: {
+                type: 'array',
+                items: { type: 'object', properties: { id: { type: 'string' } } },
+              },
+            },
+            type: 'object',
+          },
+        },
+      };
+
+      const ts = format(`
+      export interface User {
+        remote_ids?: UserRemoteIds[];
+      }
+      export interface UserRemoteIds {
+        id?: string;
+      }`);
+
+      expect(swaggerToTS(swagger)).toBe(ts);
+    });
+
     it('handles allOf', () => {
       const swagger: Swagger2 = {
         definitions: {