@vercel/[email protected]

Minor Changes

• 76feb16: Add mergeProviderData function to @vercel/flags.

  This function allows merging ProviderData from multiple sources.

  This is handy when you declare feature flags in code, and want to extend those definitions with data loaded from your feature flag provider.

  import { verifyAccess, mergeProviderData, type ApiData } from '@vercel/flags';
  import { getProviderData } from '@vercel/flags/next';
  import { NextResponse, type NextRequest } from 'next/server';
  import { getProviderData as getStatsigProviderData } from '@flags-sdk/statsig';
  import * as flagsA from '../../../../flags-a'; // your feature flags file(s)
  import * as flagsB from '../../../../flags-b'; // your feature flags file(s)
  
  export async function GET(request: NextRequest) {
    const access = await verifyAccess(request.headers.get('Authorization'));
    if (!access) return NextResponse.json(null, { status: 401 });
  
    const providerData = await mergeProviderData([
      // expose flags declared in code first
      getProviderData({ ...flagsA, ...flagsB }),
      // then enhance them with metadata from your flag provider
      getStatsigProviderData({ consoleApiKey: '', projectId: '' }),
    ]);
  
    return NextResponse.json<ApiData>(providerData);
  }

Patch Changes

• 2713ea7: Handle undefined values

  • fix: Fall back to defaultValue when a feature flag returns undefined
  • fix: Throw error when a flag resolves to undefined and no defaultValue is present

  The value undefined can not be serialized so feature flags should never resolve to undefined. Use null instead.

  Fix exports

  • fix: Export Identify and Decide types