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openapi-metadata (openapi-ts#1992)
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‎.changeset/strange-nails-jam.md

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---
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"openapi-metadata": patch
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---
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Inititial release

‎.gitignore

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.DS_Store
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dist
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node_modules
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coverage
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packages/openapi-typescript/test/fixtures/cli-outputs/out
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‎docs/.vitepress/en.ts

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},
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{
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text: "openapi-react-query",
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base: "/openapi-react-query",
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items: [
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{ text: "Getting Started", link: "/openapi-react-query/" },
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{ text: "useQuery", link: "/openapi-react-query/use-query" },
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{ text: "useMutation", link: "/openapi-react-query/use-mutation" },
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{ text: "useSuspenseQuery", link: "/openapi-react-query/use-suspense-query" },
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{ text: "queryOptions", link: "/openapi-react-query/query-options" },
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{ text: "Getting Started", link: "/" },
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{ text: "useQuery", link: "/use-query" },
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{ text: "useMutation", link: "/use-mutation" },
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{
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text: "useSuspenseQuery",
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link: "/use-suspense-query",
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},
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{
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text: "queryOptions",
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link: "/query-options",
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},
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{ text: "About", link: "/openapi-react-query/about" },
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],
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},
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{ text: "About", link: "/about" },
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],
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},
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{
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text: "openapi-metadata",
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base: "/openapi-metadata",
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items: [
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{ text: "Getting Started", link: "/" },
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{ text: "Decorators", link: "/decorators" },
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{ text: "Metadata", link: "/metadata" },
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{ text: "Type loader", link: "/type-loader" },
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{ text: "UI Integrations", link: "/ui" },
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{ text: "Examples", link: "/examples" },
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{ text: "About", link: "/about" },
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],
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},
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],
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},
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search: {
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indexName: "openapi-ts",
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},
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},
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socialLinks: [
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{
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icon: "github",
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link: "https://github.com/openapi-ts/openapi-typescript",
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},
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],
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footer: {
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message:
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'Released under the <a href="https://github.com/openapi-ts/openapi-typescript/blob/main/packages/openapi-typescript/LICENSE">MIT License</a>.',

‎docs/data/contributors.json

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‎docs/openapi-metadata/about.md

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---
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title: About openapi-metadata
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description: openapi-metadata Project Goals, comparisons, and more
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---
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<script setup>
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import { VPTeamMembers } from 'vitepress/theme';
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import contributors from '../data/contributors.json';
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</script>
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# About
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## Project Goals
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1. Must respect the OpenAPI V3 specification
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2. Be extensible and easily integrated inside backend frameworks
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3. Be focused around developer experience
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## Contributors
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This library wouldn’t be possible without all these amazing contributors:
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<VPTeamMembers size="small" :members="contributors['openapi-metadata']" />

‎docs/openapi-metadata/decorators.md

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---
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title: Decorators
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---
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# Decorators
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Decorators are used to enrich your OpenAPI specifications. They can be applied on a Controller, a Method or a Model. They are all prefixed with `Api`.
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> For more information about the decorators, you can directly refer to the [source code](https://github.com/openapi-ts/openapi-typescript/packages/openapi-metadata/src/decorators).
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| Decorator | Usage | Description |
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| ----------------------- | ------------------- | ------------------------------------------------------------------------ |
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| `@ApiBody` | Method | Sets the requestBody of the operation. |
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| `@ApiCookie` | Controller / Method | Adds a cookie parameter to the operation(s). |
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| `@ApiExcludeController` | Method | Excludes the operations of this controller from the document generation. |
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| `@ApiExcludeOperation` | Method | Excludes this operation from the document generation. |
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| `@ApiExtraModels` | Controller | Adds extra models to be loaded in the schema. |
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| `@ApiHeader` | Controller / Method | Adds a header parameter to the operation(s). |
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| `@ApiOperation` | Method | Configures an operation. |
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| `@ApiParam` | Controller / Method | Adds a path parameter to the operation(s). |
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| `@ApiProperty` | Model | Configures a schema property property. |
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| `@ApiQuery` | Controller / Method | Adds a query parameter to the operation(s). |
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| `@ApiResponse` | Controller / Method | Adds a response to the operation(s). |
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| `@ApiSecurity` | Controller / Method | Sets the security scheme to the operation(s). |
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| `@ApiTags` | Controller / Method | Adds tags to the operation(s). |

‎docs/openapi-metadata/examples.md

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---
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title: Examples
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---
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# Examples
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This library is made to be used through an integration with your favorite framework but you can as well use it directly as a document generator.
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## Express
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```ts
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import express from "express";
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import { generateDocument } from "openapi-metadata";
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import { generateScalarUI } from "openapi-metadata/ui";
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const app = express();
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const document = await generateDocument(yourConfiguration);
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app.get("/api", async (req, res) => {
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res.send(JSON.stringify(document));
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});
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app.get("/api/docs", (req, res) => {
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const ui = generateScalarUI("/api");
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res.send(ui);
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});
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```
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## Fastify
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```ts
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import fastify from "fastify";
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import { generateDocument } from "openapi-metadata";
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import { generateScalarUI } from "openapi-metadata/ui";
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const app = Fastify();
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const document = await generateDocument(yourConfiguration);
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app.get("/api", async () => {
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return document;
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});
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app.get("/api/docs", () => {
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const ui = generateScalarUI("/api");
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return ui;
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});
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```

‎docs/openapi-metadata/index.md

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---
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title: "Getting started"
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---
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# Introduction
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`openapi-metadata` is a framework agnostic library to automatically generate OpenAPI schemas and documentation by using Typescript decorators and metadata.
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::: code-group
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```ts [users_controller.ts]
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import { ApiOperation, ApiResponse } from "openapi-metadata/decorators";
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import User from "./user";
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class UsersController {
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@ApiOperation({
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method: "get",
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pattern: "/users",
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summary: "List users"
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})
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@ApiResponse({ type: [User] })
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async list() {
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...
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}
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}
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```
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```ts [user.ts]
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import { ApiProperty } from "openapi-metadata/decorators";
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class User {
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@ApiProperty()
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declare id: number;
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@ApiProperty()
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declare name: string;
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@ApiProperty({ required: false })
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declare mobile?: string;
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}
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```
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```ts [index.ts]
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import "reflect-metadata";
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import { generateDocument } from "openapi-metadata";
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import UsersController from "./users_controller";
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const document = await generateDocument({
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controllers: [UsersController],
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document: {
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info: {
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name: "My Api",
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version: "1.0.0",
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},
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},
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});
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console.log(document); // <- Your generated OpenAPI specifications
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```
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:::
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- ✅ Fully compliant [OpenAPI V3](https://swagger.io/specification/)
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- ✅ Automatic type inference
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- ✅ Supports [Scalar](https://scalar.com/), [Swagger UI](https://swagger.io/tools/swagger-ui/) and [Rapidoc](https://rapidocweb.com/)
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- ✅ Extensible with custom type loaders
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- ✅ Ready to be integrated with your favorite framework
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## Getting started
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### Setup
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Install `openapi-metadata` and `reflect-metadata` using your favorite package manager.
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```bash
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npm install openapi-metadata reflect-metadata
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```
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Import `reflect-metadata` in your main file.
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::: code-group
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```ts [index.ts]
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import "reflect-metadata";
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// Rest of your app
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```
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:::
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Enable `experimentalDecorators` and `experimentalDecorators`.
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::: code-group
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```json [tsconfig.json]
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{
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"compilerOptions": {
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"emitDecoratorMetadata": true,
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"experimentalDecorators": true
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}
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}
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```
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:::
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### Create your OpenAPI document
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To get started, you can use the `generateDocument` function to create an (almost) empty documentation. You can define a base document that will be merged with the generated one.
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::: code-group
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```ts [index.ts]
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import "reflect-metadata";
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import { generateDocument } from "openapi-metadata";
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const builder = await generateDocument({
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controllers: [],
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document: {
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info: {
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name: "My API",
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version: "1.0.0",
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},
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},
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});
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console.log(document.build()); // <- Your generated OpenAPI specifications
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```
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:::
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### Create your first controller
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A controller is a simple class where each methods could be an Operation.
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In the following example we have a `UsersController` which declares an operation `GET /users` that returns a list of `Users`.
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::: code-group
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```ts [controllers/users_controller.ts]
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import { ApiOperation, ApiResponse } from "openapi-metadata/decorators";
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import User from "../schemas/user";
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export default class UsersController {
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@ApiOperation({
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method: "get",
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pattern: "/users",
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summary: "List users",
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})
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@ApiResponse({ type: [User] })
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async list() {
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// ...your logic
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}
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}
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```
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:::
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### Create your first schema
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In our controller we define the response of your operation to be `[User]` (a list of users). We now need to create this model.
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By using the `@ApiProperty` decorator on class we can define the properties of our schema.
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> Unlike other libraries like `@nestjs/swagger`, every element of your OpenAPI schema is lazy-loaded. Your models will only be part of your documentation if it is used.
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::: code-group
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```ts [schemas/user.ts]
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import { ApiProperty } from "openapi-metadata/decorators";
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export default class User {
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@ApiProperty()
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declare id: string;
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@ApiProperty({ example: "John Doe" })
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declare name: string;
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@ApiProperty()
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declare email: string;
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@ApiProperty({ required: false })
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declare mobile?: string;
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}
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```
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:::
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### Add the controller to the generated document
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Now that we have our controller ready, we can use it to generate our document.
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::: code-group
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```ts [index.ts]
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import "reflect-metadata";
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import { generateDocument } from "openapi-metadata";
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import UsersController from "./controllers/users_controller.ts";
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const builder = await generateDocument({
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controllers: [UsersController],
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document: {
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info: {
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name: "My API",
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version: "1.0.0",
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},
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},
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});
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console.log(document.build()); // <- Your generated OpenAPI specifications
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```
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:::
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### Going further

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