feat: Add TurboModuleRegistry.getLazy<T>(..)

facebook · Apr 30, 2024 · 55da596 · 55da596
1 parent 845a879
commit 55da596
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Showing 3 changed files with 19 additions and 1 deletion.
diff --git a/packages/eslint-plugin-specs/react-native-modules.js b/packages/eslint-plugin-specs/react-native-modules.js
@@ -100,7 +100,8 @@ function isModuleRequire(node) {
     !(
       memberExpression.property.type === 'Identifier' &&
       (memberExpression.property.name === 'get' ||
-        memberExpression.property.name === 'getEnforcing')
+        memberExpression.property.name === 'getEnforcing' ||
+        memberExpression.property.name === 'getLazy')
     )
   ) {
     return false;

diff --git a/packages/react-native/Libraries/TurboModule/TurboModuleRegistry.d.ts b/packages/react-native/Libraries/TurboModule/TurboModuleRegistry.d.ts
@@ -11,3 +11,4 @@ import {TurboModule} from './RCTExport';
 
 export function get<T extends TurboModule>(name: string): T | null;
 export function getEnforcing<T extends TurboModule>(name: string): T;
+export function getLazy<T extends TurboModule>(name: string): T | null;
diff --git a/packages/react-native/Libraries/TurboModule/TurboModuleRegistry.js b/packages/react-native/Libraries/TurboModule/TurboModuleRegistry.js
@@ -88,3 +88,19 @@ export function getEnforcing<T: TurboModule>(name: string): T {
   invariant(module != null, message);
   return module;
 }
+
+interface ModuleHolder<T> {
+  module: T | null
+}
+
+export function getLazy<T: TurboModule>(name: string): ?T {
+  const proxy = new Proxy<ModuleHolder<T>>({ module: null }, {
+    get: (target, property) => {
+      if (target.module == null) {
+        target.module = get(name)
+      }
+      return target.module[property]
+    }
+  })
+  return proxy as T
+}