chore: switch to openapi3-ts which requires no patches

Author: maxholman

lib/build.ts

@@ -1,6 +1,6 @@
 import { writeFile } from 'node:fs/promises';
 import prettierConfig from '@block65/eslint-config/prettier';
-import type { OpenAPIV3_1 } from 'openapi-types';
+import type { oas31 } from 'openapi3-ts';
 import { format as prettier } from 'prettier';
 import { processOpenApiDocument } from './process-document.js';
 
@@ -11,7 +11,7 @@ export async function build(
 ) {
   const apischema = (await import(inputFile, {
     with: { type: 'json' },
-  })) as { default: OpenAPIV3_1.Document };
+  })) as { default: oas31.OpenAPIObject };
 
   const banner = `
   /**

lib/process-document.ts

@@ -1,7 +1,7 @@
 /* eslint-disable no-restricted-syntax */
 import { join, relative } from 'node:path';
 import { $RefParser } from '@apidevtools/json-schema-ref-parser';
-import type { OpenAPIV3, OpenAPIV3_1 } from 'openapi-types';
+import type { oas30, oas31 } from 'openapi3-ts';
 import toposort from 'toposort';
 import {
   InterfaceDeclaration,
@@ -14,6 +14,7 @@ import {
   VariableDeclarationKind,
   Writers,
 } from 'ts-morph';
+import type { Simplify } from 'type-fest';
 import { registerTypesFromSchema, schemaToType } from './process-schema.js';
 import {
   castToValidJsIdentifier,
@@ -60,7 +61,7 @@ function createUnion(...types: (string | undefined)[]) {
 
 export async function processOpenApiDocument(
   outputDir: string,
-  schema: OpenAPIV3_1.Document,
+  schema: Simplify<oas31.OpenAPIObject>,
   tags?: string[] | undefined,
 ) {
   const project = new Project();
@@ -191,22 +192,22 @@ export async function processOpenApiDocument(
     );
   }
 
-  for (const [path, pathItemObject] of Object.entries(schema.paths || {})) {
+  for (const [path, pathItemObject] of Object.entries<oas31.PathItemObject>(
+    schema.paths || {},
+  )) {
     if (pathItemObject) {
-      for (const [method, operationObject] of Object.entries(
-        pathItemObject,
-      ).filter(
-        ([, o]) =>
-          !tags ||
-          (typeof o === 'object' && 'tags' in o
-            ? o.tags.some((t) => tags.includes(t))
-            : false),
-      )) {
+      for (const [method, operationObject] of Object.entries(pathItemObject)
+        // ensure op is an object
+        .filter(
+          (e): e is [string, oas31.OperationObject] => typeof e[1] === 'object',
+        )
+        // tags
+        .filter(([, o]) => !tags || o.tags?.some((t) => tags?.includes(t)))) {
         if (
           typeof operationObject === 'object' &&
           'operationId' in operationObject
         ) {
-          const pathParameters: OpenAPIV3.ParameterObject[] = [];
+          const pathParameters: oas30.ParameterObject[] = [];
 
           const commandName = pascalCase(
             operationObject.operationId.replace(/command$/i, ''),
@@ -258,13 +259,13 @@ export async function processOpenApiDocument(
               ? operationObject.requestBody
               : undefined;
 
-          const queryParameters: OpenAPIV3.ParameterObject[] = [];
+          const queryParameters: oas30.ParameterObject[] = [];
 
           for (const parameter of [
             ...(operationObject.parameters || []),
             ...(pathItemObject.parameters || []),
           ]) {
-            const resolvedParameter: OpenAPIV3.ParameterObject =
+            const resolvedParameter: oas30.ParameterObject =
               '$ref' in parameter ? refs.get(parameter.$ref) : parameter;
 
             if (resolvedParameter.in === 'path') {
@@ -481,7 +482,7 @@ export async function processOpenApiDocument(
           }
 
           for (const [statusCode, response] of Object.entries(
-            operationObject.responses,
+            operationObject.responses || {},
           ).filter(([s]) => s.startsWith('2'))) {
             // early out if response is 204
             if (statusCode === '204') {

lib/process-schema.ts

@@ -1,5 +1,5 @@
 /* eslint-disable no-console */
-import type { OpenAPIV3, OpenAPIV3_1 } from 'openapi-types';
+import type { oas31, oas30 } from 'openapi3-ts';
 import {
   Writers,
   type CodeBlockWriter,
@@ -24,9 +24,7 @@ function maybeWithNullUnion(type: string | WriterFunction, withNull = false) {
   return withNull && type !== 'null' ? Writers.unionType(type, 'null') : type;
 }
 
-function schemaTypeIsNull(
-  schema: OpenAPIV3.SchemaObject | OpenAPIV3_1.SchemaObject,
-) {
+function schemaTypeIsNull(schema: oas30.SchemaObject | oas31.SchemaObject) {
   return (
     schema.type === 'null' ||
     ('nullable' in schema && schema.nullable) ||
@@ -63,12 +61,9 @@ export function schemaToType(
     string,
     InterfaceDeclaration | TypeAliasDeclaration | EnumDeclaration
   >,
-  parentSchema: OpenAPIV3_1.SchemaObject | OpenAPIV3.SchemaObject,
+  parentSchema: oas31.SchemaObject | oas30.SchemaObject,
   propertyName: string,
-  schemaObject:
-    | OpenAPIV3_1.SchemaObject
-    | OpenAPIV3.SchemaObject
-    | OpenAPIV3_1.ReferenceObject,
+  schemaObject: oas31.SchemaObject | oas30.SchemaObject | oas31.ReferenceObject,
   options: {
     exactOptionalPropertyTypes?: boolean;
     booleanAsStringish?: boolean;
@@ -127,9 +122,19 @@ export function schemaToType(
           },
         ]
       : []),
-    ...(schemaObject.example
+
+    // 3
+    ...('example' in schemaObject
       ? [{ tagName: 'example', text: String(schemaObject.example) }]
       : []),
+
+    // 3.1
+    ...('examples' in schemaObject
+      ? schemaObject.examples.map((example) => ({
+          tagName: 'example',
+          text: JSON.stringify(example),
+        }))
+      : []),
     ...(schemaObject.deprecated ? [{ tagName: 'deprecated' }] : []),
   ];
 
@@ -168,13 +173,11 @@ export function schemaToType(
                   items: {},
                   ...schemaObject,
                   type: 'array',
-                } satisfies
-                  | OpenAPIV3.ArraySchemaObject
-                  | OpenAPIV3_1.ArraySchemaObject)
-              : {
+                } satisfies typeof schemaObject)
+              : ({
                   ...schemaObject,
                   type,
-                };
+                } satisfies typeof schemaObject);
 
           return (
             schemaToType(typesAndInterfaces, schemaObject, name, schema).type ||
@@ -420,10 +423,10 @@ export function registerTypesFromSchema(
   typesFile: SourceFile,
   schemaName: string,
   schemaObject:
-    | OpenAPIV3.SchemaObject
-    | OpenAPIV3.ReferenceObject
-    | OpenAPIV3_1.SchemaObject
-    | OpenAPIV3_1.ReferenceObject,
+    | oas30.SchemaObject
+    | oas30.ReferenceObject
+    | oas31.SchemaObject
+    | oas31.ReferenceObject,
 ) {
   // deal with refs
   if ('$ref' in schemaObject) {

lib/utils.ts

@@ -1,5 +1,5 @@
 import camelcase from 'camelcase';
-import type { OpenAPIV3_1 } from 'openapi-types';
+import type { oas31 } from 'openapi3-ts';
 import wrap from 'word-wrap';
 
 export function maybeJsDocDescription(
@@ -8,19 +8,17 @@ export function maybeJsDocDescription(
   return str.length > 0 ? ['', ...str].filter(Boolean).join(' - ').trim() : '';
 }
 
-export function isReferenceObject(
-  obj: unknown,
-): obj is OpenAPIV3_1.ReferenceObject {
+export function isReferenceObject(obj: unknown): obj is oas31.ReferenceObject {
   return typeof obj === 'object' && obj !== null && '$ref' in obj;
 }
 
 export function getDependency(obj: unknown): string | undefined {
   return isReferenceObject(obj) ? obj.$ref : undefined;
 }
 
-export function isNotReferenceObject<
-  T extends OpenAPIV3_1.ReferenceObject | unknown,
->(obj: T): obj is Exclude<T, OpenAPIV3_1.ReferenceObject> {
+export function isNotReferenceObject<T extends oas31.ReferenceObject | unknown>(
+  obj: T,
+): obj is Exclude<T, oas31.ReferenceObject> {
   return !isReferenceObject(obj);
 }
 
@@ -29,7 +27,7 @@ export function isNotNullOrUndefined<T>(obj: T | null | undefined): obj is T {
 }
 
 export function getDependents(
-  obj: OpenAPIV3_1.ReferenceObject | OpenAPIV3_1.SchemaObject,
+  obj: oas31.ReferenceObject | oas31.SchemaObject,
 ): string[] {
   const strOnly = (x: string | undefined): x is string => typeof x === 'string';
 

package.json

@@ -54,7 +54,7 @@
     "eslint-plugin-react": "^7.37.1",
     "eslint-plugin-react-hooks": "^4.6.2",
     "js-yaml": "^4.1.0",
-    "openapi-types": "^12.1.3",
+    "openapi3-ts": "^4.4.0",
     "prettier": "^2.8.8",
     "typescript": "^5.6.2",
     "undici": "^6.19.8",