> For the complete documentation index, see [llms.txt](https://rudderlabs.gitbook.io/rudderlabs-1/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://rudderlabs.gitbook.io/rudderlabs-1/docs/data-governance/rudder-typer.md).

# RudderTyper

[**RudderTyper**](https://github.com/rudderlabs/rudder-typer) is a tool that lets you generate strongly-typed [**RudderStack**](https://rudderstack.com/) analytics library wrappers based on your [**Tracking Plan**](https://documenter.getpostman.com/view/16242548/TzeWFT6D) spec.

Simply put, it uses an event from your specified tracking plan and generates an analytics call in the supported languages.

RudderTyper currently generates native clients for the [JavaScript ](https://rudderstack.com/docs/stream-sources/rudderstack-sdk-integration-guides/rudderstack-javascript-sdk), [Node.js ](https://rudderstack.com/docs/stream-sources/rudderstack-sdk-integration-guides/rudderstack-node-sdk), [Android ](https://rudderstack.com/docs/stream-sources/rudderstack-sdk-integration-guides/rudderstack-android-sdk), and [iOS ](https://rudderstack.com/docs/stream-sources/rudderstack-sdk-integration-guides/rudderstack-ios-sdk)SDKs

![Readme](/files/rkmD2GO2ou13d0vRBFaw)

## Key Features

Some key features of RudderTyper are:

* Allows you to contextualize your analytics instrumentation and validate it with your event spec, before deploying to production.
* You can access and validate your event names, properties, types, etc.
* It provides compile-time errors and warns you about any missing required properties, data mismatch, and any issues in the JSON schema configured in your tracking plan.

**This feature is currently in a closed beta. If you're interested, please contact your account representative for more information.**

![Github badge](https://img.shields.io/badge/stability-beta-blueviolet?style=for-the-badge\&logo=github)

## Get Started

To fire up a quick start wizard to create a `ruddertyper.yml` and generate your first client with the specified configuration details, run the following command:

```bash
$ npx rudder-typer init | initialize | quickstart
```

## Other Commands

### Update

```bash
$ npx rudder-typer update | u | *   (default)
```

This command syncs `plan.json` with RudderStack to pull the latest changes in your tracking plan and then generates an updated development client.

### Build

```bash
$ npx rudder-typer build | b | d | dev | development
```

This command generates a development client from `plan.json`.

### Production

```bash
$ npx rudder-typer prod | p | production
```

This command generates a production client from `plan.json`.

### Token

```bash
$ npx rudder-typer token | tokens | t
```

This command prints the local RudderStack API token configuration.

### Version

```bash
$ npx rudder-typer version
```

This command prints the RudderTyper CLI version.

### Help

```bash
$ npx rudder-typer help
```

This command prints the help message describing different commands available with RudderTyper.

## CLI Arguments

| Argument  | Type      | Description                                                                      |
| --------- | --------- | -------------------------------------------------------------------------------- |
| `config`  | `string`  | An optional path to a `ruddertyper.yml` (or a directory with `ruddertyper.yml`). |
| `debug`   | `boolean` | An optional (hidden) flag for enabling Ink debug mode.                           |
| `version` | `boolean` | Standard `--version` flag to print the version of this CLI.                      |
| `v`       | `boolean` | Standard `-v` flag to print the version of this CLI.                             |
| `help`    | `boolean` | Standard `--help` flag to print help on a command.                               |
| `h`       | `boolean` | Standard `-h` flag to print help on a command.                                   |

## Configuration Reference

RudderTyper stores its configuration in a `ruddertyper.yml` file in the root of your repository.

A sample configuration looks like the following:

```bash
# RudderStack RudderTyper Configuration Reference (https://github.com/rudderlabs/rudder-typer)
# Just run `npx rudder-typer` to re-generate a client with the latest versions of these events.

scripts:
  # You can supply a RudderStack API token using a `script.token` command. The output of `script.token` command should be a valid RudderStack API token.
  token: source .env; echo $RUDDERTYPER_TOKEN
  # You can supply email address linked to your workspace using a `script.email` command.The output of `script.email` command should be an email address registered with your workspace.
  email: source .env: echo $EMAIL
  # You can format any of RudderTyper's auto-generated files using a `script.after` command.
  # See `Formatting Generated Files` below.
  after: ./node_modules/.bin/prettier --write analytics/plan.json

client:
  # Which RudderStack SDK you are generating for.
  # Valid values: analytics.js, analytics-node, analytics-ios, analytics-android.
  sdk: analytics-node
  # The target language for your RudderTyper client.
  # Valid values: javascript, java, objective-c, swift.
  language: javascript
  # Javascript Transpilation Settings
  # Valid values: 'ES3','ES5','ES2015','ES2016','ES2017','ES2018','ES2019','ESNext','Latest'
  scriptTarget: 'ES6'
  # Valid values: 'CommonJS','AMD','UMD','System','ES2015','ESNext'
  moduleTarget: 'ESNext'

trackingPlans:
  # The RudderStack Tracking Plan that you are generating a client for.
  # Provide your workspace slug and Tracking Plan id
  # You also need to supply a path to a directory to save your RudderTyper client.
  - id: rs_QhWHOgp7xg8wkYxilH3scd2uRID
    workspaceSlug: rudderstack-demo
    path: ./analytics
```

## How to integrate RudderTyper-generated client with your app?

This section includes steps to integrate your RudderTyper-generated client with your app across different RudderStack SDKs.

### RudderStack Android SDK

* Import all the files in the client generated by RudderTyper as a package in your project.
* Then, you can directly make the calls using the RudderTyper client as shown below:

```java
// Import your auto-generated RudderTyper client:
import com.rudderstack.generated.*

  // Issue your first RudderTyper track call!
  RudderTyperAnalytics.with(this).orderCompleted(
    OrderCompleted.Builder()
    .orderID("ck-f306fe0e-cc21-445a-9caa-08245a9aa52c")
    .total(39.99)
    .build()
  );
```

### RudderStack iOS SDK

* Import your RudderTyper client into your project using XCode.

**NOTE**: If you place your generated files into a folder in your project, import the project as a group not a folder reference.

* Then, you can directly make the calls using the RudderTyper client as shown:

```
// Import your auto-generated RudderTyper client:
#import "RSRudderTyperAnalytics.h"

// Issue your first RudderTyper track call!
[RSRudderTyperAnalytics orderCompletedWithOrderID: "ck-f306fe0e-cc21-445a-9caa-08245a9aa52c" total: @39.99];
```

### RudderStack JavaScript SDK

* Import the RudderTyper-generated client using `require()` and make the calls if your framework supports them. Otherwise, you can use [**Browserify**](https://browserify.org/) to generate a bundle that supports your implementation. The implementation for each of the alternatives mentioned above will be as shown:

#### Using the `require()`method

```javascript
// Import RudderStack JS SDK and initialize it
const rudderanalytics = require("rudder-sdk-js")
rudderanalytics.load(YOUR_WRITE_KEY, DATA_PLANE_URL)
// Import your auto-generated RudderTyper client:
const rudderTyper = require("./rudderTyperClient")
// Pass in your rudder-sdk-js instance to RudderTyper client
rudderTyper.setRudderTyperOptions({
  analytics: rudderanalytics,
})
// Issue your first RudderTyper track call!
rudderTyper.orderCompleted({
  orderID: "ck-f306fe0e-cc21-445a-9caa-08245a9aa52c",
  total: 39.99,
})
```

#### Using `browserify`

* Execute the following command to generate a bundle from the RudderTyper client:

```bash
browserify rudderTyperClient.js --standalone rudderTyper >  rudderTyperBundle.js
```

* Now you can make calls from your `html` file as shown:

```markup
<head>
  <script>
    rudderanalytics = window.rudderanalytics = [];
    var methods = ["load", "page", "track", "identify", "alias", "group", "ready", "reset", "getAnonymousId", "setAnonymousId"];
    for (var i = 0; i < methods.length; i++) {
      var method = methods[i];
      rudderanalytics[method] = function(methodName) {
        return function() {
          rudderanalytics.push([methodName].concat(Array.prototype.slice.call(arguments)));
        };
      }(method);
    }
    rudderanalytics.load(YOUR_WRITE_KEY, DATA_PLANE_URL);
    rudderanalytics.page();
  </script>
  <script src="https://cdn.rudderlabs.com/v1.1/rudder-analytics.min.js"></script>
  <script src="./rudderTyperBundle.js"></script>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<script>
  rudderTyper.setRudderTyperOptions({
    analytics: rudderanalytics
  });
  rudderTyper.orderCompleted({
    orderID: 'ck-f306fe0e-cc21-445a-9caa-08245a9aa52c',
    total: 39.99
  })
</script>
```

If you are using an older version of the JavaScript SDK (v1), refer to the [Version Migration Guide](https://www.rudderstack.com/docs/stream-sources/rudderstack-sdk-integration-guides/rudderstack-javascript-sdk/version-migration-guide/) to migrate to v1.1.

### RudderStack Node.js SDK

* Import the the RudderTyper-generated client and start making calls using RudderTyper as shown:

```javascript
// Import Rudder Node SDK and intialize it
const Analytics = require("@rudderstack/rudder-sdk-node")
const client = new Analytics(WRITE_KEY, DATA_PLANE_URL / v1 / batch)
const ruddertyper = require("./rudderTyperClient")
// Pass in your rudder-sdk-node instance to RudderTyper.
ruddertyper.setRudderTyperOptions({
  analytics: client,
})
// Issue your first RudderTyper track call!
ruddertyper.orderCompleted({
  orderID: "ck-f306fe0e-cc21-445a-9caa-08245a9aa52c",
  total: 39.99,
})
```

## Contribute

* To submit a bug report or feature request, file an issue [**here**](https://github.com/rudderlabs/rudder-server/issues).
* To develop on `ruddertyper` or propose support for a new language, see our [**contributors documentation**](https://github.com/rudderlabs/rudder-server/blob/master/CONTRIBUTING.md).

## Contact us

For queries on any of the sections in this guide, start a conversation in our [**Slack**](https://rudderstack.com/join-rudderstack-slack-community) community.