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Overview

The JavaScript SDK allows you access customer data from Stigg, and leverage it to implement mind-blowing customer experiences.
Stigg also offers plug-and-play customizable widgets for React, Vue.js, Webflow, Wordpress, and plain HTML.

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Installing the SDK

The first step is to install the Stigg SDK as a dependency in your application using your application’s dependency manager: 
npm install @stigg/js-client-sdk

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Retrieving the publishable key

In the Stigg app, go to Integrations > API keys. Copy the Publishable key of the relevant environment.

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Initializing the SDK

Initializing client instance with the publishable key. You can either pass the customer ID when initializing the client instance or using setCustomerId function as shown below. 
import Stigg from '@stigg/js-client-sdk';

const stiggClient = Stigg.initialize({  
    apiKey: 'YOUR_PUBLISHABLE_KEY',
    customerId: '41XTDbE'
});

export default stiggClient;
To find out when the client is ready, you can use waitForInitialization which return a promise that resolves when the client is ready to use, or rejects when the initialization failed. 
try {
  await stiggClient.waitForInitialization();
  // initialization succeeded, entitlements values are now available
} catch (err) {
  // initialization failed
}

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Setting the customer context

Set the customer ID of the user that’s accessing your app, usually after the customer signs in or restores a session: 
stiggClient.setCustomerId('customer-demo-01');

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Setting the customer resource context

For Multi-instance products, set the customer resource ID of the user that’s accessing your app, usually after the customer enters into a resource context: 
stiggClient.setResource('resource-01');

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Getting all of the entitlements of a specific customer

const entitlements = await stiggClient.getEntitlements();

// all the entitlements the customer is entitled to  
entitlements.forEach((entitlement) => {  
  console.log(JSON.stringify(entitlement));  
});

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Getting the entitlement of a customer to a specific feature

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Checking the entitlement for a boolean feature

const entitlement = stiggClient.getBooleanEntitlement({  
  featureId: 'feature-demo-02'  
});

if (entitlement.hasAccess) {  
  // customer has access to the feature  
} else {  
  // no access, offer an upsell  
}

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Checking the entitlement for a numeric configuration feature

getNumericEntitlement is for non-metered numeric features (meterType: "None"). Calling it on a metered feature returns a FeatureTypeMismatch fallback (v4.0.0+). Use getMeteredEntitlement for metered features.
const entitlement = stiggClient.getNumericEntitlement({
  featureId: 'feature-demo-01'
});

if (entitlement.hasAccess) {  
  // get the entitlement numeric value that is defined for the feature  
  console.log(entitlement.value);  
}

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Checking if a customer has access to a metered feature

const entitlement = stiggClient.getMeteredEntitlement({  
  featureId: 'feature-demo-03'
});

if (entitlement.hasAccess) {  
  // has access and the requested usage is within the allowed quota  
} else {  
  // the customer has exceeded his quota for this feature  
}

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Proactively checking if a customer will have access to X units of a metered feature

const requestedUsage = 10;

const entitlement = stiggClient.getMeteredEntitlement({  
  featureId: 'feature-demo-03',  
  options: {  
    requestedUsage
  }  
});

if (entitlement.hasAccess) {  
  // has access and the requested usage is within the allowed quota  
} else {  
  // the customer has exceeded his quota for this feature  
}

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Getting paywall data

Useful for rendering the public pricing page or customer paywall. 
const paywallData = await stiggClient.getPaywall();

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Getting customer portal data

Useful for rendering the public pricing page or customer paywall. 
const customerPortalData = await stiggClient.getCustomerPortal();

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Getting customer data

Useful for rendering a customer portal. 
const customer = await stiggClient.getCustomer();

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Listing customers active subscriptions

The getActiveSubscriptionsList method returns a list of slim subscription data, for extended data for a specific subscription use getSubscription method. 
const subscriptions = await stiggClient.getActiveSubscriptionsList({
  resourceId: 'resource-01',  // optional, pass it to get subscription of specific resource
});
In addition, there’s an option to pass a list of resource Ids 
const subscriptions = await stiggClient.getActiveSubscriptionsList({
  resourceIds: ['resource-01', 'resource-02', 'resource-03' ],  // optional, pass it to get list of resources
});

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Getting a subscription

Useful for rendering a customer portal. To retrieve extended subscription: 
const subscriptions = await stiggClient.getSubscription({
  subscriptionId: 'subscriptions-01'
});

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Getting all available coupons

Useful for rendering a paywall or promotions. 
const coupons = await stiggClient.getCoupons();

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Estimate subscription cost

You can estimate the subscription cost using the estimateSubscription method. This can help the customer to understand the costs before paying. 
// increment usage of a metered feature  
await stiggClient.estimateSubscription({  
	customerId: "customer-demo-01",
  planId: "plan-revvenu-growth",
  billableFeatures: [{ 						// optional, required for plans with per-unit pricing
    featureId:'feature-01-templates',
    quantity: 2
  }],
  billingPeriod: "MONTHLY",
  addons: [{  								// optional
  	addonId: 'addon-10-campaigns',  
    quantity: 1  
  }], 
  promotionCode: "STIGG50", 	// optional
  startDate: new Date(),			// optional
  billingCountryCode: 'US',		// optional, required for price localization, must be in the ISO-3166-1 format
	billingInformation: {
      taxPercentage: 17 // optional. taxRate will be created if not exists
  }
});
Return fields 
{
  total: 'Total after discounts and taxes.',
  totalExcludingTax: 'Total including discounts but excluding tax.',
  subTotal: 'Total before any discount or exclusive tax is applied.',
  tax: 'Tax amount',
  taxDetails: {
    displayName: 'Tax display name.',
    inclusive: 'Specifies if the tax rate is inclusive or exclusive.',
    percentage: 'Tax rate percentage out of 100.',
  },
  discount: {
    type: 'Discount type - `PERCENTAGE` / `FIXED`.',
    value: 'Discount value out of 100.',
    durationType:
      'The duration of the discount - `FOREVER` / `REPEATING` / `ONCE`',
    durationInMonths: 'The duration of the discount in months',
  },
  billingPeriodRange: {
    start: 'Billing period start date',
    end: 'Billing period end date',
  },
  proration: {
    prorationDate: 'The date when the proration occurred',
    credit:
      'The prorated amount of credits to refund the customer in the upcoming invoice',
    debit:
      'The prorated amount of debit to charge the customer in the upcoming invoice',
    netAmount: 'The sum of `debit` and `credit`',
  },
  // Not prorated subscription prices
  subscription: {
    total: 'Total after discounts and taxes.',
    totalExcludingTax: 'Total including discounts but excluding tax.',
    subTotal: 'Total before any discount or exclusive tax is applied.',
    tax: 'Tax amount',
  },
};
You can also estimate the cost of updating an existing subscription using the updateSubscription method, which also returns a breakdown of the proration amounts: 
await stiggClient.estimateSubscriptionUpdate({  
  subscriptionId: "subscription-plan-revvenu-growth-da6324",
  // optional parameters:
  billableFeatures: [{ 						// optional, required for subscriptions with per-unit pricing
    featureId:'feature-01-templates',
    quantity: 2
  }],
  promotionCode: "STIGG50",
  addons: [{  
    addonId: 'addon-10-campaigns',  
    quantity: 1  
  }]
});
Return fields 
{
  total: 'Total after discounts and taxes.',
  totalExcludingTax: 'Total including discounts but excluding tax.',
  subTotal: 'Total before any discount or exclusive tax is applied.',
  tax: 'Tax amount',
  taxDetails: {
    displayName: 'Tax display name.',
    inclusive: 'Specifies if the tax rate is inclusive or exclusive.',
    percentage: 'Tax rate percentage out of 100.',
  },
  discount: {
    type: 'Discount type - `PERCENTAGE` / `FIXED`.',
    value: 'Discount value out of 100.',
    durationType:
      'The duration of the discount - `FOREVER` / `REPEATING` / `ONCE`',
    durationInMonths: 'The duration of the discount in months',
  },
  billingPeriodRange: {
    start: 'Billing period start date',
    end: 'Billing period end date',
  },
  proration: {
    prorationDate: 'The date when the proration occurred',
    credit:
      'The prorated amount of credits to refund the customer in the upcoming invoice',
    debit:
      'The prorated amount of debit to charge the customer in the upcoming invoice',
    netAmount: 'The sum of `debit` and `credit`',
  },
  // Not prorated subscription prices
  subscription: {
    total: 'Total after discounts and taxes.',
    totalExcludingTax: 'Total including discounts but excluding tax.',
    subTotal: 'Total before any discount or exclusive tax is applied.',
    tax: 'Tax amount',
  },
};
  1. Passing of promo codes requires an integration with a billing solution, such as: Stripe.
  2. Promo codes should be generated in the integrated billing solution.
  3. When providing the optional promotionCode parameter, the promo code and associated coupon will validated against the defined restrictions to ensure that they’re applicable for the subscription. If validation fails, a relevant error code would be returned; otherwise, the subscription will include the discounted price.

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Handling a successful checkout

When initiating checkout using Stigg, the user is expected to be redirected and land on the successUrl destination page in the case of a successful payment. Due to the async nature of webhooks from Stripe, the subscription might not be yet provisioned in your Stigg account. To make sure that the new subscription has been activated in this scenario, you can utilize the waitForCheckoutCompleted method to have an indication if the checkout is still in progress or not. Once the promise resolves, the subscription has been successfully activated and new entitlements were granted. If there’s a timeout or a network error during that time, the promise is rejected with the error. For example, you can present a loading animation until the promise returned from the method is resolved. 
// in the context of the `successUrl` page,  
// wait for the subscription to become active and entitlements to be updated

async function onPageLoad(){  
  showLoadingIndicator();
  
  try {
    await stiggClient.waitForCheckoutCompleted();
  } catch (err) {
    // an error occurred while waiting for checkout to complete,
    // can be a network error or a timeout. 
    // inform the customer to try again or contact support.
    showErrorMessage();
  } finally {
    hideLoadingIndicator();
  }
}

window.addEventListener('load', (event) => {  
  onPageLoad();  
});

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Clearing the customer context

Clear the customer ID of the user that’s accessing your app, usually after the customer signs out: 
stiggClient.clearCustomer();

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Clearing the customer resource context

For Multi-instance products, clear the customer ID of the user that’s accessing your app, usually after the customer exit the context of specific resource: 
stiggClient.clearResource();

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Refresh the cache

Stigg’s SDK refreshes its cache of customer entitlements and usage data upon initialization (for example: when a page is refreshed), as well as periodically every 30 seconds. After performing an operation on the backend that can modify the customer entitlements or the usage of a feature (for example: updating subscriptions or reporting usage), it’s useful to immediately refresh the cache. To do so, call the below method: 
await stiggClient.refresh();

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Listening for entitlement updates

Subscribe to real-time updates whenever a customer’s entitlements change. The callback receives a CustomerEntitlementsResultV2 object with an entitlements array (EntitlementV2[]). 
stiggClient.addListener('entitlementsUpdated', (result) => {
  result.entitlements.forEach((entitlement) => {
    console.log(entitlement.feature?.id, entitlement.hasAccess);
  });
});
To unsubscribe, pass the same function reference to removeListener: 
stiggClient.removeListener('entitlementsUpdated', myListener);

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Offline mode

During local development or testing, you might want to avoid making network requests to the Stigg API. To do this, you can run the JS SDK in offline mode by enabling the offline option. When enabled, API key validation will always succeed, regardless of the key provided. 
const stiggClient = Stigg.initialize({
  apiKey: 'local',
  customerId: '41XTDbE'
  offline: true
});
In offline mode, the JS SDK respects the global fallback strategy, and entitlement evaluations are limited to the values defined as fallback entitlements. 
const stiggClient = Stigg.initialize({
  apiKey: 'local',
  customerId: '41XTDbE'
  offline: true,
  entitlementsFallback: {
    'feature-number-of-seats': {
     	hasAccess: true,
    },
    'feature-templates': {
      hasAccess: true,
      usageLimit: 10
    }
  }
});

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Credit auto-recharge

// Get automatic recharge configuration
await stiggClient.getAutomaticRechargeConfiguration({
  customerId: 'customer-123',
  currencyId: 'tokens'
});

// Save/update automatic recharge configuration
await stiggClient.saveAutomaticRechargeConfiguration(
  customerId: 'customer-123',
  currencyId: 'tokens',
  isEnabled: true,
  thresholdValue: 50,
  targetBalance: 100,
  maxSpendLimit: 250  // optional
});

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Migrating to v4.0.0

ChangeMigration
entitlementsUpdated event payload changed from Map<string, CachedEntitlement> to CustomerEntitlementsResultV2Update listeners to iterate .entitlements (an EntitlementV2[] array) instead of a Map.
EntitlementsState type removedReplace imports with CustomerEntitlementsResult from @stigg/js-client-sdk.
resetSettings on MeteredEntitlement removed (was @deprecated)Use the top-level resetPeriod and usagePeriodEnd fields directly on the entitlement.
getNumericEntitlement() on a metered feature now returns a FeatureTypeMismatch fallbackUse getMeteredEntitlement() for metered features.
isGranted on credit entitlements removedUse hasAccess — same semantics.
Logger interface second parameter widened to LoggerExtra (Record<string, any> | Error | Error['stack'])Update any custom Logger implementation to accept LoggerExtra as the second parameter.
Entitlement union type now includes EnumEntitlementAdd an EnumEntitlement branch to any exhaustive switch/case on Entitlement.
CreditEntitlementCurrency named export removedUse CreditEntitlement['currency'] inline type instead.

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Full SDK reference

JavaScript SDK reference

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SDK changelog

JavaScript SDK changelog