fix(form-core): remove crypto package

.changeset/chatty-readers-ask.md

@@ -0,0 +1,5 @@
+---
+'@tanstack/form-core': patch
+---
+
+fixes partial prerendering in NextJS using cache components

packages/form-core/package.json

@@ -52,7 +52,6 @@
   ],
   "dependencies": {
     "@tanstack/devtools-event-client": "^0.3.5",
-    "@tanstack/pacer": "^0.15.3",
     "@tanstack/store": "^0.7.7"
   },
   "devDependencies": {

packages/form-core/src/FormApi.ts

@@ -1,5 +1,4 @@
 import { Derived, Store, batch } from '@tanstack/store'
-import { throttle } from '@tanstack/pacer'
 import {
   deleteBy,
   determineFormLevelErrorSourceAndValue,
@@ -12,6 +11,7 @@ import {
   isNonEmptyArray,
   mergeOpts,
   setBy,
+  throttle,
   uuid,
 } from './utils'
 import { defaultValidationLogic } from './ValidationLogic'
@@ -1316,9 +1316,7 @@ export class FormApi<
           id: this._formId,
           state: state,
         }),
-      {
-        wait: 300,
-      },
+      300,
     )
 
     // devtool broadcasts

packages/form-core/src/utils.ts

@@ -603,3 +603,12 @@ export function uuid(): string {
   IDX++
   return out
 }
+
+export function throttle<TFn extends (...args: Array<any>) => any>(fn: TFn, delay: number) {
+  let timer: ReturnType<typeof setTimeout> | undefined;
+
+  return function (...args: Parameters<TFn>) {
+    clearTimeout(timer);
+    timer = setTimeout(() => fn(...args), delay);
+  };
+}

packages/form-core/tests/utils.spec.ts

@@ -1,4 +1,4 @@
-import { describe, expect, expectTypeOf, it } from 'vitest'
+import { describe, expect, expectTypeOf, it, vi } from 'vitest'
 import {
   concatenatePaths,
   createFieldMap,
@@ -10,6 +10,7 @@ import {
   makePathArray,
   mergeOpts,
   setBy,
+  throttle,
   uuid,
 } from '../src/index'
 
@@ -825,3 +826,16 @@ describe('uuid', () => {
     expect(['8', '9', 'a', 'b']).toContain(parts[3]?.[0])
   })
 })
+
+describe('throttle', () => {
+  it('should throttle a function', async () => {
+    const fn = vi.fn()
+    vi.useFakeTimers()
+    const throttledFn = throttle(fn, 100)
+    throttledFn()
+    throttledFn()
+    await vi.runAllTimersAsync()
+    vi.useRealTimers()
+    expect(fn).toHaveBeenCalledTimes(1)
+  })
+})