typespec-events

Standardize your analytics and tracking events across your entire stack. typespec-events uses TypeSpec as a single source of truth to generate type-safe code for multiple languages, ensuring consistency and reducing maintenance overhead.

The official documentation is available at here.

The Problem

Managing tracking events across different teams, codebases, and technologies often leads to inconsistent data, missing events, and a high maintenance burden when changes are required.

The Solution

With typespec-events, you define your events once in a language-agnostic way using TypeSpec. A custom emitter then generates code for your target platforms, ensuring your events are always in sync.

Single Source of Truth: Define all your tracking events in one place.
Type-Safe Code Generation: Generate code for TypeScript (with Zod schemas) and Go (experimental).
Consistent Schemas: Ensure event schemas are consistent across your frontend and backend.
Extensible: The emitter framework is designed to be extended to support more languages in the future.

Packages

This monorepo contains the following packages:

Package	Description
`packages/typespec`	The core TypeSpec library and the multi-language emitter.
`packages/runtime`	A lightweight, type-safe runtime for consuming generated event schemas.
`docs`	The official documentation website, built with Starlight.
`packages/playground`	An example project demonstrating usage and for integration testing.

Quick Start

Install the necessary packages:

pnpm add @typespec-events/typespec @typespec-events/runtime @typespec/compiler zod

Define your events in a .tsp file:

// main.tsp
import "@typespec-events/typespec";
using TypespecEvents;

@event("user_signed_up")
model UserSignedUpEvent {
  userId: string;
  email: string;
}

Configure your tspconfig.yaml:
```
emit:
  - "@typespec-events/typespec"
```
Generate the code:
```
tsp compile .
```

Use the generated code:

// In your application code
import { defineTracker } from '@typespec-events/runtime';
import { eventSchemas } from './tsp-output/@typespec-events/events.zod';

const track = defineTracker({
  track: (eventName, properties) => {
    console.log(`Tracking: ${eventName}`, properties);
  },
  events: eventSchemas,
});

track('user_signed_up', { userId: '123', email: 'test@example.com' });

For more detailed information, please visit the Official Documentation.

Development

This project uses pnpm for package management and Moon for task running.