This page is about Swagger Editor Next (beta). If you're looking for the current Swagger Editor docs, visit Swagger Editor.

SwaggerEditor

SwaggerEditor is using forked Create React App as it's building infrastructure.

Table of Contents

Getting started

Installation

SwaggerEditor is currently hosted on GitHub packages registry. For installing SwaggerEditor npm package from GitHub packages registry, create .npmrc file in your current directory and add the following line to it:

@swagger-api:registry=https://npm.pkg.github.com

Prerequisites

Using Node.js active LTS version is recommended. node-gyp is used to build some fragments that require Python 3.x. emscripten or docker needs to be installed on your operating system as well. We strongly recommend going with a docker option.

You can now install SwaggerEditor package using npm:

 $ npm install @swagger-api/swagger-editor

For more information about installing npm packages from GitHub packages registry please visit Installing a package section in their documentation.

Usage

Install the package:

 $ npm install @swagger-api/swagger-editor

Use the package in you application:

index.js:

import React from 'react';
import ReactDOM from 'react-dom';
import SwaggerEditor from '@swagger-api/swagger-editor';
import '@swagger-api/swagger-editor/swagger-editor.css';

const url = "https://raw.githubusercontent.com/asyncapi/spec/v2.2.0/examples/streetlights-kafka.yml";

const MyApp = () => (
  <div>
    <h1>SwaggerEditor Integration</h1>
    <SwaggerEditor url={url} />
  </div>
);

self.MonacoEnvironment = {
  /**
   * We're building into the dist/ folder. When application starts on
   * URL=https://example.com then SwaggerEditor will look for
   * `apidom.worker.js` on https://example.com/dist/apidom.worker.js and
   * `editor.worker` on https://example.com/dist/editor.worker.js.
   */
  baseUrl: `${document.baseURI || location.href}/dist/`,
}

ReactDOM.render(<MyApp />, document.getElementById('swagger-editor'));

webpack.config.js (webpack@5)

Install dependencies needed for webpack@5 to properly build SwaggerEditor.

 $ npm i stream-browserify --save-dev
 $ npm i process --save-dev
 $ npm i https-browserify --save-dev
 $ npm i stream-http --save-dev
 $ npm i util --save-dev
const path = require('path');
const webpack = require('webpack');

module.exports = {
  mode: 'production',
  entry: {
    app: './index.js',
    'apidom.worker': '@swagger-api/swagger-editor/apidom.worker',
    'editor.worker': '@swagger-api/swagger-editor/editor.worker',
  },
  output: {
    globalObject: 'self',
    filename: '[name].js',
    path: path.resolve(__dirname, 'dist')
  },
  resolve: {
    fallback: {
      path: false,
      fs: false,
      http: require.resolve('stream-http'), // required for asyncapi parser
      https: require.resolve('https-browserify'), // required for asyncapi parser
      stream: require.resolve('stream-browserify'),
      util: require.resolve('util'),
      zlib: false,
    },
    alias: {
      // This doesn't pull any languages into bundles and works as monaco-editor-core was installed
      'monaco-editor$': 'monaco-editor/esm/vs/editor/edcore.main.js',
    },
  },
  plugins: [
    new webpack.ProvidePlugin({
      process: 'process/browser.js',
      Buffer: ['buffer', 'Buffer'],
    }),
  ],
  module: {
    rules: [
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader']
      },
      /**
       * The default way in which webpack loads wasm files won’t work in a worker,
       * so we will have to disable webpack’s default handling of wasm files and
       * then fetch the wasm file by using the file path that we get using file-loader.
       *
       * Resource: https://pspdfkit.com/blog/2020/webassembly-in-a-web-worker/
       *
       * Alternatively, WASM file can be bundled directly into JavaScript bundle as data URLs.
       * This configuration reduces the complexity of WASM file loading
       * but increases the overal bundle size:
       *
       * {
       *   test: /\.wasm$/,
       *   type: 'asset/inline',
       * }
       */
      {
        test: /\.wasm$/,
        loader: 'file-loader',
        type: 'javascript/auto', // this disables webpacks default handling of wasm
      },
    ]
  }
};

Alternative webpack.config.js (webpack@5)

We've already built Web Workers fragments for you, and they're located inside our npm distribution package in dist/umd/ directory. In order to avoid complexity of building the Web Worker fragments you can use those fragments directly. This setup will work both for production and development (webpack-dev-server) and will significantly shorten your build process.

Install copy-webpack-plugin and other needed dependencies.

 $ npm i copy-webpack-plugin --save-dev
 $ npm i stream-browserify --save-dev
 $ npm i process --save-dev
 $ npm i https-browserify --save-dev
 $ npm i stream-http --save-dev
 $ npm i util --save-dev
const path = require('path');
const webpack = require('webpack');
const CopyWebpackPlugin = require('copy-webpack-plugin');

module.exports = {
  mode: 'production',
  entry: {
    app: './index.js',
  },
  output: {
    globalObject: 'self',
    filename: 'static/js/[name].js',
    path: path.resolve(__dirname, 'dist')
  },
  resolve: {
    fallback: {
      path: false,
      fs: false,
      http: require.resolve('stream-http'), // required for asyncapi parser
      https: require.resolve('https-browserify'), // required for asyncapi parser
      stream: require.resolve('stream-browserify'),
      util: require.resolve('util'),
      zlib: false,
    },
    alias: {
      // This doesn't pull any languages into bundles and works as monaco-editor-core was installed
      'monaco-editor$': 'monaco-editor/esm/vs/editor/edcore.main.js',
    }
  },
  plugins: [
    new webpack.ProvidePlugin({
      process: 'process/browser.js',
      Buffer: ['buffer', 'Buffer'],
    }),
    new CopyWebpackPlugin({
      patterns: [
        {
          from: 'node_modules/@swagger-api/swagger-editor/dist/umd/apidom.worker.js',
          to: 'static/js',
        },
        {
          from: 'node_modules/@swagger-api/swagger-editor/dist/umd/editor.worker.js',
          to: 'static/js',
        }
      ]
    }),
  ],
  module: {
    rules: [
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader']
      }
    ]
  }
};

Development

Prerequisites

Node.js >= 16.13.0 and npm >= 8.1.0 are the minimum required versions that this repo runs on. We recommend using the latest version of Node.js@16 though. We're using node-gyp to build some fragments that require Python 3.x. emscripten or docker needs to be installed on your operating system. We strongly recommend going with a docker option.

Note: ApiDOM monorepo requires the use of npm>=7.21.x

Setting up

If you use nvm, running following command inside this repository will automatically pick the right Node.js version for you:

 $ nvm use

Run the following commands to set up the repository for local development:

 $ git submodule init
 $ git submodule update
 $ npm i
 $ npm start

Setting up on MacOS

With the combination of MacOS and Node.js 16, there is a known compatibility issue of installing and building the tree-sitter dependency. The workaround is to globally install >=npm@8.1.x (for lerna/apidom monorepo) but use Node.js 14 to install/build tree-sitter. Although the prerequisite is to use Node@16.13, at this point we don't rely on any specific feature from Node.js 16.13 (except for >=npm@8.1.x).

 $ npm install -g npm
 $ npm --version

Assuming we are using nvm to manage Node versions:

 $ nvm use v14

Then follow the installation steps above.

npm scripts

Lint

 $ npm run lint

Runs unit and integration tests

 $ npm test

Runs E2E Cypress tests

Usage in development environment:

 $ npm run cy:dev

Usage in Continuos Integration (CI) environment:

 $ npm run cy:ci

Build

 $ npm run build

This script will build all the SwaggerEditor build artifacts - app, esm and umd.

Build artifacts

After building artifacts, every two new directories will be created: build/ and dist/.

build/

$ npm run build:app
$ npm run build:app:serve

Builds and serves standalone SwaggerEditor application and all it's assets on http://localhost:3050/.

dist/esm/

$ npm run build:bundle:esm

This bundle is suited for consumption by 3rd parties, which want to use SwaggerEditor as a library in their own applications and have their own build process.

dist/umd/

$ npm run build:bundle:umd

SwaggerEditor UMD bundle exports SwaggerEditor symbol on global object. It's bundled with React defined as external. This allows consumer to use his own version of React + ReactDOM and mount SwaggerEditor lazily.

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <meta
    name="description"
    content="SwaggerEditor"
  />
  <title>SwaggerEditor</title>
  <link rel="stylesheet" href="./swagger-editor.css" />
</head>
<body>
  <div id="swagger-editor"></div>
  <script src="https://unpkg.com/react@17/umd/react.production.min.js" crossorigin></script>
  <script src="https://unpkg.com/react-dom@17/umd/react-dom.production.min.js" crossorigin></script>
  <script src="./dist/umd/swagger-editor.js"></script>
  <script>
    const props = {
      url: 'https://raw.githubusercontent.com/asyncapi/spec/v2.2.0/examples/streetlights-kafka.yml',
    };
    const element = React.createElement(SwaggerEditor, props);
    const domContainer = document.querySelector('#swagger-editor');

    ReactDOM.render(element, domContainer);
  </script>
</body>
</html>

npm

SwaggerEditor is released as @swagger-api/swagger-editor npm package on GitHub packages registry. Package can also be produced manually by running following commands (assuming you're already followed setting up steps):

 $ npm run build:bundle:esm
 $ npm run build:bundle:umd
 $ npm pack

Package mapping

SwaggerEditor maps its build artifacts in package.json file in following way:

"unpkg": "./dist/umd/swagger-editor.js",
"module": "./dist/esm/swagger-editor.js",
"browser": "./dist/esm/swagger-editor.js",
"jsnext:main": "./dist/esm/swagger-editor.js",
"exports": {
  "./package.json": "./package.json",
  "./swagger-editor.css": "./dist/esm/swagger-editor.css",
  ".": {
    "browser": "./dist/esm/swagger-editor.js"
  },
  "./apidom.worker": {
    "browser": "./dist/esm/apidom.worker.js"
  },
  "./editor.worker": {
    "browser": "./dist/esm/editor.worker.js"
  }
}

To learn more about these fields please refer to webpack mainFields documentation or to Node.js Modules: Packages documentation.

Documentation

Customization

Environment Variables

It is possible to use an environment variable to specify a local JSON/YAML file or a remote URL for SwaggerEditor to load on startup. These environment variables will get baked in during build time into build artifacts.

Environment variables currently available:

Variable name Description
REACT_APP_DEFINITION_FILE Specifies a local file path, and the specified file must also be present in the /public/static directory
REACT_APP_DEFINITION_URL Specifies a remote URL. This environment variable currently takes precedence over REACT_APP_SWAGGER_FILE
REACT_APP_VERSION Specifies the version of this app. The version is read from package.json file.

Sample environment variable values can be found in .env file. For more information about using environment variables, please refer to adding Custom Environment Variables section of Create React App documentation.

Using preview plugins in SwaggerUI

SwaggerEditor comes with number of preview plugins that are responsible for rendering the definition that's being created in the editor. These plugins include:

  • EditorPreviewAsyncAPIPlugin - AsyncAPI specification rendering support
  • EditorPreviewAPIDesignSystemsPlugin - API Design Systems rendering support

With a bit of adapting, we can use these plugins with SwaggerUI to provide ability to render AsyncAPI or API Design Systems definitions with SwaggerUI.

import React from 'react';
import ReactDOM from 'react-dom';
import SwaggerUI from 'swagger-ui-react';
import 'swagger-ui-react/swagger-ui.css';
import SwaggerEditor from '@swagger-api/swagger-editor';

const plugins = [
  SwaggerEditor.plugins.EditorContentType,
  SwaggerEditor.plugins.EditorPreviewAsyncAPI,
  SwaggerEditor.plugins.EditorPreviewAPIDesignSystems,
  SwaggerEditor.plugins.SwaggerUIAdapter,
];

ReactDOM.render(
  <SwaggerUI
    plugins={plugins}
    url="https://raw.githubusercontent.com/asyncapi/spec/v2.4.0/examples/streetlights-kafka.yml"
  />,
  document.getElementById('swagger-ui')
);

The key here is SwaggerUIAdapter plugin which adapts SwaggerEditor plugins to use directly with SwaggerUI.

Docker

Once we build the app, we can also build and run a Docker container.

 $ docker build . -t 
 $ docker run -p 8080:80 
  • can be any descriptive string, e.g. user/myapp-1
  • open browser at localhost:8080

Building a Docker container with custom environment variables is not currently supported by SwaggerEditor. This is due to the inability of npm to handle scoped packages that are outside of the public npm registry. In the case of SwaggerEditor, @swagger-api/apidom-ls is a dependency currently only residing in Github packages. It is in the roadmap to make @swagger-api/apidom-ls, as well as this version of SwaggerEditor, available in the public npm registry.

License

SwaggerEditor is licensed under Apache 2.0 license. SwaggerEditor comes with an explicit NOTICE file containing additional legal notifications and information.

This project uses REUSE specification that defines a standardized method for declaring copyright and licensing for software projects.