fix(validation): add requestIdleCallback shim for Safari

packages/@sanity/validation/src/util/requestIdleCallback.ts

@@ -0,0 +1,31 @@
+/**
+ * Simple requestIdleCallback polyfill
+ * Can be removed when all browsers support requestIdleCallback: https://caniuse.com/requestidlecallback
+ * @param callback
+ * @param options
+ */
+const requestIdleCallbackShim: typeof window.requestIdleCallback = function requestIdleCallbackShim(
+  callback,
+  options?
+): number {
+  const start = Date.now()
+  return window.setTimeout(() => {
+    callback({
+      didTimeout: false,
+      timeRemaining() {
+        return Math.max(0, Date.now() - start)
+      },
+    })
+  }, 0)
+}
+
+const cancelIdleCallbackShim: typeof window.cancelIdleCallback = function cancelIdleCallbackShim(
+  handle: number
+): void {
+  return window.clearTimeout(handle)
+}
+
+const win = typeof window === 'undefined' ? undefined : window
+
+export const requestIdleCallback = win?.requestIdleCallback || requestIdleCallbackShim
+export const cancelIdleCallback = win?.cancelIdleCallback || cancelIdleCallbackShim

packages/@sanity/validation/src/validateDocument.ts

@@ -13,6 +13,7 @@ import {
 import {uniqBy} from 'lodash'
 import type {SanityClient} from '@sanity/client'
 import typeString from './util/typeString'
+import {requestIdleCallback, cancelIdleCallback} from './util/requestIdleCallback'
 import ValidationErrorClass from './ValidationError'
 import normalizeValidationRules from './util/normalizeValidationRules'