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fix: add forceNew option to bypass singleton for SSR #13

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Merged
xingxinglieo merged 1 commit into from
Mar 10, 2026
Merged

fix: add forceNew option to bypass singleton for SSR #13

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23 changes: 17 additions & 6 deletions src/statsig/client.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,12 @@ export interface InitOptions extends StatsigOptions {
* The data will be set before initializeSync() is called.
*/
bootstrap?: StatsigBootstrap | null;

/**
* Skip singleton cache and create a new client instance.
* Use this for SSR where each request needs its own client with fresh bootstrap data.
*/
forceNew?: boolean;
}

/**
Expand All @@ -65,9 +71,9 @@ export function initStatsigClient(
user: StatsigUser,
options?: InitOptions,
): StatsigClient {
if (client) return client;
const { isTestEnv, logger, bootstrap, forceNew, ...statsigOptions } = options ?? {};

const { isTestEnv, logger, bootstrap, ...statsigOptions } = options ?? {};
if (!forceNew && client) return client;

// Set custom logger
if (logger) {
Expand All @@ -91,15 +97,20 @@ export function initStatsigClient(
log(`Initializing in default mode (userID: '${user.userID}')`);
}

client = new StatsigClient(clientKey, user, statsigOptions);
const instance = new StatsigClient(clientKey, user, statsigOptions);

// Set bootstrap data before initializeSync (enables zero-network init)
if (bootstrap?.data) {
client.dataAdapter.setData(bootstrap.data);
instance.dataAdapter.setData(bootstrap.data);
}

client.initializeSync();
return client;
instance.initializeSync();

if (!forceNew) {
client = instance;
}

return instance;
}

/**
Expand Down