version-bridge: remove getGlobalSingleton

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

packages/version-bridge/api-report.md

@@ -25,9 +25,6 @@ export function createVersionedValueMap<
   },
 >(versions: Versions): VersionedValue<Versions>;
 
-// @public
-export function getGlobalSingleton<T>(id: string): T;
-
 // @public
 export function getOrCreateGlobalSingleton<T>(id: string, supplier: () => T): T;
 

packages/version-bridge/src/lib/globalObject.test.ts

@@ -14,33 +14,10 @@
  * limitations under the License.
  */
 
-import { getGlobalSingleton, getOrCreateGlobalSingleton } from './globalObject';
+import { getOrCreateGlobalSingleton } from './globalObject';
 
 const anyGlobal = global as any;
 
-describe('getGlobalSingleton', () => {
-  beforeEach(() => {
-    delete anyGlobal['__@backstage/my-thing__'];
-  });
-
-  it('should return an existing value', () => {
-    const myThing = {};
-    const myOtherThing = {};
-
-    anyGlobal['__@backstage/my-thing__'] = myThing;
-    expect(getGlobalSingleton('my-thing')).toBe(myThing);
-    expect(getGlobalSingleton('my-thing')).toBe(myThing);
-    anyGlobal['__@backstage/my-thing__'] = myOtherThing;
-    expect(getGlobalSingleton('my-thing')).toBe(myOtherThing);
-  });
-
-  it('should throw if the value is not set', () => {
-    expect(() => getGlobalSingleton('my-thing')).toThrow(
-      'Global my-thing is not set',
-    );
-  });
-});
-
 describe('getOrCreateGlobalSingleton', () => {
   beforeEach(() => {
     delete anyGlobal['__@backstage/my-thing__'];

packages/version-bridge/src/lib/globalObject.ts

@@ -30,20 +30,6 @@ const globalObject = getGlobalObject();
 
 const makeKey = (id: string) => `__@backstage/${id}__`;
 
-/**
- * Used to access a global singleton value, failing if it is not already set.
- *
- * @public
- */
-export function getGlobalSingleton<T>(id: string): T {
-  const key = makeKey(id);
-  if (!(key in globalObject)) {
-    throw new Error(`Global ${id} is not set`);
-  }
-
-  return globalObject[key];
-}
-
 /**
  * Serializes access to a global singleton value, with the first caller creating the value.
  *

packages/version-bridge/src/lib/index.ts

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-export { getGlobalSingleton, getOrCreateGlobalSingleton } from './globalObject';
+export { getOrCreateGlobalSingleton } from './globalObject';
 export {
   createVersionedContextForTesting,
   useVersionedContext,