statsig-js

What is statsig-js?

The statsig-js npm package is a client-side library for integrating with Statsig, a feature management and experimentation platform. It allows developers to manage feature flags, run A/B tests, and gather insights on user behavior to make data-driven decisions.

What are statsig-js's main functionalities?

Initialize Statsig

This code demonstrates how to initialize the Statsig client with a client API key and user information. Initialization is necessary before using other features of the library.

const statsig = require('statsig-js');

async function initializeStatsig() {
  await statsig.initialize('client-api-key', { userID: 'user123' });
}

initializeStatsig();

Check Feature Gate

This code sample shows how to check if a feature gate is enabled for the current user. Feature gates are used to control the rollout of new features.

async function checkFeatureGate() {
  const isFeatureEnabled = await statsig.checkGate('new_feature');
  if (isFeatureEnabled) {
    console.log('Feature is enabled');
  } else {
    console.log('Feature is disabled');
  }
}

checkFeatureGate();

Get Experiment Parameter

This code demonstrates how to retrieve a specific parameter from an experiment. This is useful for running A/B tests and customizing user experiences based on experiment results.

async function getExperimentParameter() {
  const parameter = await statsig.getExperimentParameter('experiment_name', 'parameter_name');
  console.log('Experiment parameter value:', parameter);
}

getExperimentParameter();

Log Event

This code sample shows how to log custom events to Statsig. Logging events helps in tracking user interactions and gathering data for analysis.

async function logEvent() {
  await statsig.logEvent('button_click', { buttonName: 'signup' });
  console.log('Event logged');
}

logEvent();

Other packages similar to statsig-js

launchdarkly-js-client-sdk

LaunchDarkly is a feature management platform that allows developers to control feature flags and run experiments. It offers similar functionalities to Statsig, such as feature flagging, A/B testing, and user segmentation. However, LaunchDarkly is a more established platform with a broader range of integrations and enterprise features.

unleash-client

Unleash is an open-source feature management solution that provides feature toggling and experimentation capabilities. It is a good alternative to Statsig for teams looking for a self-hosted solution with flexibility and control over their feature management infrastructure.

README

Statsig

Statsig JavaScript Client SDK

The JavaScript SDK for single user client environments. If you need a SDK for another language or server environment, check out our other SDKs.

Statsig helps you move faster with feature gates (feature flags), and/or dynamic configs. It also allows you to run A/B/n tests to validate your new features and understand their impact on your KPIs. If you're new to Statsig, check out our product and create an account at statsig.com.

Getting Started

Check out our SDK docs to get started.