fix: handle underscores in kebabToCamel flag key conversion (SWITCH-1178)

internal/sdks/sdks.go

@@ -46,10 +46,10 @@ func ReplaceSDKKeys(instructions string, sdkKey, clientSideId, mobileKey string)
 	return r.Replace(instructions)
 }
 
-// kebabToCamel converts a kebab-case key string into a camelCase key string, used for the React sdk instructions
+// kebabToCamel converts a kebab-case or underscore-separated key string into a camelCase key string, used for the React sdk instructions
 func kebabToCamel(kebabCase string) string {
-	replaceDashRegex := regexp.MustCompile(`-(.)`)
-	camelCase := replaceDashRegex.ReplaceAllStringFunc(kebabCase, func(match string) string {
+	replaceSeparatorRegex := regexp.MustCompile(`[-_](.)`)
+	camelCase := replaceSeparatorRegex.ReplaceAllStringFunc(kebabCase, func(match string) string {
 		return strings.ToUpper(string(match[1]))
 	})
 	return camelCase

internal/sdks/sdks_test.go

@@ -34,6 +34,13 @@ func TestReplaceFlagKey(t *testing.T) {
 			assert.Equal(t, string(tt.expected), string(updated))
 		})
 	}
+
+	t.Run("replaces camelCase placeholder with underscore key converted to camelCase", func(t *testing.T) {
+		body := "# title ```const featureFlagKey = \"myFlagKey\"```"
+		expected := "# title ```const featureFlagKey = \"myCoolFlag\"```"
+		updated := sdks.ReplaceFlagKey(body, "my_cool_flag")
+		assert.Equal(t, expected, updated)
+	})
 }
 
 func TestReplaceSDKKey(t *testing.T) {