diff --git a/Libraries/YellowBox/Data/YellowBoxRegistry.js b/Libraries/YellowBox/Data/YellowBoxRegistry.js
index 0c98ca00f..b6a445f89 100644
--- a/Libraries/YellowBox/Data/YellowBoxRegistry.js
+++ b/Libraries/YellowBox/Data/YellowBoxRegistry.js
@@ -18,7 +18,7 @@ export type Registry = Map<Category, $ReadOnlyArray<YellowBoxWarning>>;
 
 export type Observer = (registry: Registry) => void;
 
-type IgnorePattern = string | RegExp;
+export type IgnorePattern = string | RegExp;
 
 export type Subscription = $ReadOnly<{|
   unsubscribe: () => void,
diff --git a/Libraries/YellowBox/YellowBox.js b/Libraries/YellowBox/YellowBox.js
index 0b6768110..4f7d41284 100644
--- a/Libraries/YellowBox/YellowBox.js
+++ b/Libraries/YellowBox/YellowBox.js
@@ -13,7 +13,7 @@
 const React = require('React');
 
 import type {Category} from 'YellowBoxCategory';
-import type {Registry, Subscription} from 'YellowBoxRegistry';
+import type {Registry, Subscription, IgnorePattern} from 'YellowBoxRegistry';
 
 type Props = $ReadOnly<{||}>;
 type State = {|
@@ -50,7 +50,7 @@ if (__DEV__) {
 
   // eslint-disable-next-line no-shadow
   YellowBox = class YellowBox extends React.Component<Props, State> {
-    static ignoreWarnings(patterns: $ReadOnlyArray<string>): void {
+    static ignoreWarnings(patterns: $ReadOnlyArray<IgnorePattern>): void {
       YellowBoxRegistry.addIgnorePatterns(patterns);
     }
 
@@ -135,7 +135,7 @@ if (__DEV__) {
   };
 } else {
   YellowBox = class extends React.Component<Props> {
-    static ignoreWarnings(patterns: $ReadOnlyArray<string>): void {
+    static ignoreWarnings(patterns: $ReadOnlyArray<IgnorePattern>): void {
       // Do nothing.
     }