feat(FeatureFlags): broaden feature flag type to accept undefined (#4554

) * feat(FeatureFlags): loosen feature flag type to accept undefined * chore: add changeset * Update .changeset/grumpy-coats-worry.md --------- Co-authored-by: Josh Black <joshblack@users.noreply.github.com>
primer · May 6, 2024 · ed31476 · ed31476
1 parent e094a39
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diff --git a/.changeset/grumpy-coats-worry.md b/.changeset/grumpy-coats-worry.md
@@ -0,0 +1,5 @@
+---
+'@primer/react': minor
+---
+
+Broaden feature flag type for experimental FeatureFlags to accept undefined
diff --git a/packages/react/src/FeatureFlags/FeatureFlagScope.ts b/packages/react/src/FeatureFlags/FeatureFlagScope.ts
@@ -1,5 +1,5 @@
 export type FeatureFlags = {
-  [key: string]: boolean
+  [key: string]: boolean | undefined
 }
 
 export class FeatureFlagScope {
@@ -24,7 +24,10 @@ export class FeatureFlagScope {
   flags: Map<string, boolean>
 
   constructor(flags: FeatureFlags = {}) {
-    this.flags = new Map(Object.entries(flags))
+    this.flags = new Map()
+    for (const [key, value] of Object.entries(flags)) {
+      this.flags.set(key, value ?? false)
+    }
   }
 
   /**