Fix useId updater overwrite (#6788)

Author: snowystinger

packages/@react-aria/utils/src/useId.ts

@@ -22,7 +22,7 @@ let canUseDOM = Boolean(
   window.document.createElement
 );
 
-let idsUpdaterMap: Map<string, (v: string) => void> = new Map();
+let idsUpdaterMap: Map<string, Array<(v: string) => void>> = new Map();
 
 /**
  * If a default is not provided, generate an id.
@@ -39,7 +39,12 @@ export function useId(defaultId?: string): string {
   }, []);
 
   if (canUseDOM) {
-    idsUpdaterMap.set(res, updateValue);
+    // TS not smart enough to know that `has` means the value exists
+    if (idsUpdaterMap.has(res) && !idsUpdaterMap.get(res)!.includes(updateValue)) {
+      idsUpdaterMap.set(res, [...idsUpdaterMap.get(res)!, updateValue]);
+    } else {
+      idsUpdaterMap.set(res, [updateValue]);
+    }
   }
 
   useLayoutEffect(() => {
@@ -71,15 +76,15 @@ export function mergeIds(idA: string, idB: string): string {
     return idA;
   }
 
-  let setIdA = idsUpdaterMap.get(idA);
-  if (setIdA) {
-    setIdA(idB);
+  let setIdsA = idsUpdaterMap.get(idA);
+  if (setIdsA) {
+    setIdsA.forEach(fn => fn(idB));
     return idB;
   }
 
-  let setIdB = idsUpdaterMap.get(idB);
-  if (setIdB) {
-    setIdB(idA);
+  let setIdsB = idsUpdaterMap.get(idB);
+  if (setIdsB) {
+    setIdsB.forEach(fn => fn(idA));
     return idA;
   }
 

packages/react-aria-components/test/TextField.test.js

@@ -238,5 +238,24 @@ describe('TextField', () => {
       expect(outerEl[0]).not.toHaveAttribute('id');
       expect(input).toHaveAttribute('id', 'name');
     });
+
+    it('should link an id on the input to the label htmlFor', async () => {
+      let {getAllByTestId, getByRole, getByText} = render(
+        <TextField defaultValue="test" data-testid="text-field-test" data-foo="bar">
+          <Label>Test</Label>
+          <Input id="name" />
+          <Text slot="description">Description</Text>
+          <Text slot="errorMessage">Error</Text>
+        </TextField>
+      );
+      let outerEl = getAllByTestId('text-field-test');
+      let input = getByRole('textbox');
+      let label = getByText('Test');
+
+      expect(outerEl).toHaveLength(1);
+      expect(outerEl[0]).not.toHaveAttribute('id');
+      expect(input).toHaveAttribute('id', 'name');
+      expect(label).toHaveAttribute('for', 'name');
+    });
   });
 });