feat!: 700% faster deepCopyObject, refactor deep merging and deep copying, type improvements (#7272)

**BREAKING:**
- The `deepMerge` exported from payload now handles more complex data and
is slower. The old, simple deepMerge is now exported as `deepMergeSimple`
- `combineMerge` is no longer exported. You can use
`deepMergeWithCombinedArrays` instead
- The behavior of the exported `deepCopyObject` and `isPlainObject` may
be different and more reliable, as the underlying algorithm has changed

packages/db-mongodb/package.json

@@ -34,7 +34,6 @@
   },
   "dependencies": {
     "bson-objectid": "2.0.4",
-    "deepmerge": "4.3.1",
     "http-status": "1.6.2",
     "mongoose": "6.12.3",
     "mongoose-paginate-v2": "1.7.22",

packages/db-mongodb/src/queries/parseParams.ts

@@ -1,8 +1,7 @@
 import type { FilterQuery } from 'mongoose'
 import type { Field, Operator, Payload, Where } from 'payload'
 
-import deepmerge from 'deepmerge'
-import { combineMerge } from 'payload'
+import { deepMergeWithCombinedArrays } from 'payload'
 import { validOperators } from 'payload/shared'
 
 import { buildAndOrConditions } from './buildAndOrConditions.js'
@@ -70,7 +69,7 @@ export async function parseParams({
                   [searchParam.path]: searchParam.value,
                 }
               } else if (typeof searchParam?.value === 'object') {
-                result = deepmerge(result, searchParam.value, { arrayMerge: combineMerge })
+                result = deepMergeWithCombinedArrays(result, searchParam.value)
               }
             }
           }

packages/payload/src/admin/RichText.ts

@@ -6,7 +6,7 @@ import type { SanitizedCollectionConfig, TypeWithID } from '../collections/confi
 import type { SanitizedConfig } from '../config/types.js'
 import type { Field, FieldAffectingData, RichTextField, Validate } from '../fields/config/types.js'
 import type { SanitizedGlobalConfig } from '../globals/config/types.js'
-import type { PayloadRequest, RequestContext } from '../types/index.js'
+import type { JsonObject, PayloadRequest, RequestContext } from '../types/index.js'
 import type { WithServerSidePropsComponentProps } from './elements/WithServerSideProps.js'
 
 export type RichTextFieldProps<Value extends object, AdapterProps, ExtraFieldProperties = {}> = {
@@ -82,7 +82,7 @@ export type BeforeChangeRichTextHookArgs<
   /**
    * The original data with locales (not modified by any hooks). Only available in `beforeChange` and `beforeDuplicate` field hooks.
    */
-  docWithLocales?: Record<string, unknown>
+  docWithLocales?: JsonObject
 
   duplicate?: boolean
 
@@ -98,7 +98,7 @@ export type BeforeChangeRichTextHookArgs<
   /**
    * The original siblingData with locales (not modified by any hooks).
    */
-  siblingDocWithLocales?: Record<string, unknown>
+  siblingDocWithLocales?: JsonObject
 
   skipValidation?: boolean
 }
@@ -216,7 +216,7 @@ type RichTextAdapterBase<
     populationPromises: Promise<void>[]
     req: PayloadRequest
     showHiddenFields: boolean
-    siblingDoc: Record<string, unknown>
+    siblingDoc: JsonObject
   }) => void
   hooks?: RichTextHooks
   i18n?: Partial<GenericLanguages>

packages/payload/src/auth/operations/resetPassword.ts

@@ -59,7 +59,7 @@ export const resetPasswordOperation = async (args: Arguments): Promise<Result> =
       collection: collectionConfig.slug,
       req,
       where: {
-        resetPasswordExpiration: { greater_than: new Date() },
+        resetPasswordExpiration: { greater_than: new Date().toISOString() },
         resetPasswordToken: { equals: data.token },
       },
     })

packages/payload/src/auth/strategies/local/incrementLoginAttempts.ts

@@ -1,5 +1,5 @@
 import type { SanitizedCollectionConfig, TypeWithID } from '../../../collections/config/types.js'
-import type { Payload } from '../../../index.js'
+import type { JsonObject, Payload } from '../../../index.js'
 import type { PayloadRequest } from '../../../types/index.js'
 
 type Args = {
@@ -39,13 +39,13 @@ export const incrementLoginAttempts = async ({
     return
   }
 
-  const data: Record<string, unknown> = {
+  const data: JsonObject = {
     loginAttempts: Number(doc.loginAttempts) + 1,
   }
 
   // Lock the account if at max attempts and not already locked
   if (typeof doc.loginAttempts === 'number' && doc.loginAttempts + 1 >= maxLoginAttempts) {
-    const lockUntil = new Date(Date.now() + lockTime)
+    const lockUntil = new Date(Date.now() + lockTime).toISOString()
     data.lockUntil = lockUntil
   }
 

packages/payload/src/auth/strategies/local/register.ts

@@ -1,5 +1,5 @@
 import type { SanitizedCollectionConfig } from '../../../collections/config/types.js'
-import type { Payload } from '../../../index.js'
+import type { JsonObject, Payload } from '../../../index.js'
 import type { PayloadRequest } from '../../../types/index.js'
 
 import { ValidationError } from '../../../errors/index.js'
@@ -7,7 +7,7 @@ import { generatePasswordSaltHash } from './generatePasswordSaltHash.js'
 
 type Args = {
   collection: SanitizedCollectionConfig
-  doc: Record<string, unknown>
+  doc: JsonObject
   password: string
   payload: Payload
   req: PayloadRequest

packages/payload/src/collections/config/defaults.ts

@@ -1,8 +1,9 @@
-import type { LoginWithUsernameOptions } from '../../auth/types.js'
+import type { IncomingAuthType, LoginWithUsernameOptions } from '../../auth/types.js'
+import type { CollectionConfig } from './types.js'
 
 import defaultAccess from '../../auth/defaultAccess.js'
 
-export const defaults = {
+export const defaults: Partial<CollectionConfig> = {
   access: {
     create: defaultAccess,
     delete: defaultAccess,
@@ -49,7 +50,7 @@ export const defaults = {
   versions: false,
 }
 
-export const authDefaults = {
+export const authDefaults: IncomingAuthType = {
   cookies: {
     sameSite: 'Lax',
     secure: false,

packages/payload/src/collections/config/sanitize.ts

@@ -1,5 +1,3 @@
-import merge from 'deepmerge'
-
 import type { Config, SanitizedConfig } from '../../config/types.js'
 import type { CollectionConfig, SanitizedCollectionConfig } from './types.js'
 
@@ -9,8 +7,8 @@ import { sanitizeFields } from '../../fields/config/sanitize.js'
 import { fieldAffectsData } from '../../fields/config/types.js'
 import mergeBaseFields from '../../fields/mergeBaseFields.js'
 import { getBaseUploadFields } from '../../uploads/getBaseFields.js'
+import { deepMergeWithReactComponents } from '../../utilities/deepMerge.js'
 import { formatLabels } from '../../utilities/formatLabels.js'
-import { isPlainObject } from '../../utilities/isPlainObject.js'
 import baseVersionFields from '../../versions/baseFields.js'
 import { versionDefaults } from '../../versions/defaults.js'
 import { authDefaults, defaults, loginWithUsernameDefaults } from './defaults.js'
@@ -29,9 +27,7 @@ export const sanitizeCollection = async (
   // Make copy of collection config
   // /////////////////////////////////
 
-  const sanitized: CollectionConfig = merge(defaults, collection, {
-    isMergeableObject: isPlainObject,
-  })
+  const sanitized: CollectionConfig = deepMergeWithReactComponents(defaults, collection)
 
   // /////////////////////////////////
   // Sanitize fields
@@ -141,9 +137,10 @@ export const sanitizeCollection = async (
     // sanitize fields for reserved names
     sanitizeAuthFields(sanitized.fields, sanitized)
 
-    sanitized.auth = merge(authDefaults, typeof sanitized.auth === 'object' ? sanitized.auth : {}, {
-      isMergeableObject: isPlainObject,
-    })
+    sanitized.auth = deepMergeWithReactComponents(
+      authDefaults,
+      typeof sanitized.auth === 'object' ? sanitized.auth : {},
+    )
 
     if (!sanitized.auth.disableLocalStrategy && sanitized.auth.verify === true) {
       sanitized.auth.verify = {}
@@ -157,12 +154,12 @@ export const sanitizeCollection = async (
     }
 
     sanitized.auth.loginWithUsername = sanitized.auth.loginWithUsername
-      ? merge(
-          loginWithUsernameDefaults,
-          typeof sanitized.auth.loginWithUsername === 'boolean'
+      ? {
+          ...loginWithUsernameDefaults,
+          ...(typeof sanitized.auth.loginWithUsername === 'boolean'
             ? {}
-            : sanitized.auth.loginWithUsername,
-        )
+            : sanitized.auth.loginWithUsername),
+        }
       : false
 
     sanitized.fields = mergeBaseFields(sanitized.fields, getBaseAuthFields(sanitized.auth))

packages/payload/src/collections/config/types.ts

@@ -28,7 +28,12 @@ import type {
 } from '../../config/types.js'
 import type { DBIdentifierName } from '../../database/types.js'
 import type { Field } from '../../fields/config/types.js'
-import type { CollectionSlug, TypedAuthOperations, TypedCollection } from '../../index.js'
+import type {
+  CollectionSlug,
+  JsonObject,
+  TypedAuthOperations,
+  TypedCollection,
+} from '../../index.js'
 import type { PayloadRequest, RequestContext } from '../../types/index.js'
 import type { SanitizedUploadConfig, UploadConfig } from '../../uploads/types.js'
 import type {
@@ -41,7 +46,7 @@ export type DataFromCollectionSlug<TSlug extends CollectionSlug> = TypedCollecti
 export type AuthOperationsFromCollectionSlug<TSlug extends CollectionSlug> =
   TypedAuthOperations[TSlug]
 
-export type RequiredDataFromCollection<TData extends Record<string, any>> = MarkOptional<
+export type RequiredDataFromCollection<TData extends JsonObject> = MarkOptional<
   TData,
   'createdAt' | 'id' | 'sizes' | 'updatedAt'
 >

packages/payload/src/collections/dataloader.ts

@@ -2,7 +2,7 @@ import type { BatchLoadFn } from 'dataloader'
 
 import DataLoader from 'dataloader'
 
-import type { PayloadRequest } from '../types/index.js'
+import type { JsonValue, PayloadRequest } from '../types/index.js'
 import type { TypeWithID } from './config/types.js'
 
 import { isValidID } from '../utilities/isValidID.js'
@@ -119,7 +119,7 @@ const batchAndLoadDocs =
         showHiddenFields: Boolean(showHiddenFields),
         where: {
           id: {
-            in: ids,
+            in: ids as JsonValue,
           },
         },
       })

packages/payload/src/collections/operations/create.ts

@@ -1,6 +1,6 @@
 import crypto from 'crypto'
 
-import type { CollectionSlug } from '../../index.js'
+import type { CollectionSlug, JsonObject } from '../../index.js'
 import type { Document, PayloadRequest } from '../../types/index.js'
 import type {
   AfterChangeHook,
@@ -184,7 +184,7 @@ export const createOperation = async <TSlug extends CollectionSlug>(
     // beforeChange - Fields
     // /////////////////////////////////////
 
-    const resultWithLocales = await beforeChange<Record<string, unknown>>({
+    const resultWithLocales = await beforeChange<JsonObject>({
       collection: collectionConfig,
       context: req.context,
       data,

packages/payload/src/collections/operations/deleteByID.ts

@@ -1,4 +1,4 @@
-import type { CollectionSlug } from '../../index.js'
+import type { CollectionSlug, JsonObject, TypeWithID } from '../../index.js'
 import type { PayloadRequest } from '../../types/index.js'
 import type { BeforeOperationHook, Collection, DataFromCollectionSlug } from '../config/types.js'
 

packages/payload/src/collections/operations/duplicate.ts

@@ -194,7 +194,7 @@ export const duplicateOperation = async <TSlug extends CollectionSlug>(
     // beforeChange - Fields
     // /////////////////////////////////////
 
-    result = await beforeChange<DataFromCollectionSlug<TSlug>>({
+    result = await beforeChange({
       id,
       collection: collectionConfig,
       context: req.context,
@@ -280,7 +280,7 @@ export const duplicateOperation = async <TSlug extends CollectionSlug>(
     // afterChange - Fields
     // /////////////////////////////////////
 
-    result = await afterChange<DataFromCollectionSlug<TSlug>>({
+    result = await afterChange({
       collection: collectionConfig,
       context: req.context,
       data: versionDoc,

packages/payload/src/collections/operations/update.ts

@@ -263,7 +263,7 @@ export const updateOperation = async <TSlug extends CollectionSlug>(
         // beforeChange - Fields
         // /////////////////////////////////////
 
-        let result = await beforeChange<DataFromCollectionSlug<TSlug>>({
+        let result = await beforeChange({
           id,
           collection: collectionConfig,
           context: req.context,
@@ -349,7 +349,7 @@ export const updateOperation = async <TSlug extends CollectionSlug>(
         // afterChange - Fields
         // /////////////////////////////////////
 
-        result = await afterChange<DataFromCollectionSlug<TSlug>>({
+        result = await afterChange({
           collection: collectionConfig,
           context: req.context,
           data,

packages/payload/src/collections/operations/updateByID.ts

@@ -236,7 +236,7 @@ export const updateByIDOperation = async <TSlug extends CollectionSlug>(
     // beforeChange - Fields
     // /////////////////////////////////////
 
-    let result = await beforeChange<DataFromCollectionSlug<TSlug>>({
+    let result = await beforeChange({
       id,
       collection: collectionConfig,
       context: req.context,
@@ -341,7 +341,7 @@ export const updateByIDOperation = async <TSlug extends CollectionSlug>(
     // afterChange - Fields
     // /////////////////////////////////////
 
-    result = await afterChange<DataFromCollectionSlug<TSlug>>({
+    result = await afterChange({
       collection: collectionConfig,
       context: req.context,
       data,

packages/payload/src/config/sanitize.ts

@@ -1,7 +1,7 @@
 import type { AcceptedLanguages } from '@payloadcms/translations'
 
 import { en } from '@payloadcms/translations/languages/en'
-import merge from 'deepmerge'
+import { deepMergeSimple } from '@payloadcms/translations/utilities'
 
 import type {
   Config,
@@ -17,8 +17,7 @@ import { InvalidConfiguration } from '../errors/index.js'
 import { sanitizeGlobals } from '../globals/config/sanitize.js'
 import getPreferencesCollection from '../preferences/preferencesCollection.js'
 import checkDuplicateCollections from '../utilities/checkDuplicateCollections.js'
-import { deepMerge } from '../utilities/deepMerge.js'
-import { isPlainObject } from '../utilities/isPlainObject.js'
+import { deepMergeWithReactComponents } from '../utilities/deepMerge.js'
 import { defaults } from './defaults.js'
 
 const sanitizeAdminConfig = (configToSanitize: Config): Partial<SanitizedConfig> => {
@@ -48,9 +47,7 @@ const sanitizeAdminConfig = (configToSanitize: Config): Partial<SanitizedConfig>
 }
 
 export const sanitizeConfig = async (incomingConfig: Config): Promise<SanitizedConfig> => {
-  const configWithDefaults: Config = merge(defaults, incomingConfig, {
-    isMergeableObject: isPlainObject,
-  }) as Config
+  const configWithDefaults: Config = deepMergeWithReactComponents(defaults, incomingConfig)
 
   if (!configWithDefaults?.serverURL) {
     configWithDefaults.serverURL = ''
@@ -163,7 +160,7 @@ export const sanitizeConfig = async (incomingConfig: Config): Promise<SanitizedC
       isRoot: true,
     })
     if (config.editor.i18n && Object.keys(config.editor.i18n).length >= 0) {
-      config.i18n.translations = deepMerge(config.i18n.translations, config.editor.i18n)
+      config.i18n.translations = deepMergeSimple(config.i18n.translations, config.editor.i18n)
     }
   }
 

packages/payload/src/exports/shared.ts

@@ -24,10 +24,18 @@ export { formatFilesize } from '../uploads/formatFilesize.js'
 
 export { isImage } from '../uploads/isImage.js'
 
-export { deepCopyObject } from '../utilities/deepCopyObject.js'
-
-export { deepMerge } from '../utilities/deepMerge.js'
+export {
+  deepCopyObject,
+  deepCopyObjectComplex,
+  deepCopyObjectSimple,
+} from '../utilities/deepCopyObject.js'
 
+export {
+  deepMerge,
+  deepMergeWithCombinedArrays,
+  deepMergeWithReactComponents,
+  deepMergeWithSourceArrays,
+} from '../utilities/deepMerge.js'
 export { fieldSchemaToJSON } from '../utilities/fieldSchemaToJSON.js'
 
 export { getDataByPath } from '../utilities/getDataByPath.js'
@@ -55,3 +63,5 @@ export { wait } from '../utilities/wait.js'
 export { default as wordBoundariesRegex } from '../utilities/wordBoundariesRegex.js'
 
 export { versionDefaults } from '../versions/defaults.js'
+
+export { deepMergeSimple } from '@payloadcms/translations/utilities'

packages/payload/src/fields/config/sanitize.ts

@@ -1,3 +1,5 @@
+import { deepMergeSimple } from '@payloadcms/translations/utilities'
+
 import type { CollectionConfig } from '../../collections/config/types.js'
 import type { Config, SanitizedConfig } from '../../config/types.js'
 import type { Field } from './types.js'
@@ -9,7 +11,6 @@ import {
   InvalidFieldRelationship,
   MissingFieldType,
 } from '../../errors/index.js'
-import { deepMerge } from '../../utilities/deepMerge.js'
 import { formatLabels, toWords } from '../../utilities/formatLabels.js'
 import { baseBlockFields } from '../baseFields/baseBlockFields.js'
 import { baseIDField } from '../baseFields/baseIDField.js'
@@ -175,7 +176,7 @@ export const sanitizeFields = async ({
         }
 
         if (field.editor.i18n && Object.keys(field.editor.i18n).length >= 0) {
-          config.i18n.translations = deepMerge(config.i18n.translations, field.editor.i18n)
+          config.i18n.translations = deepMergeSimple(config.i18n.translations, field.editor.i18n)
         }
       }
       if (richTextSanitizationPromises) {

packages/payload/src/fields/getDefaultValue.ts

@@ -1,29 +1,31 @@
-import type { PayloadRequest } from '../types/index.js'
+import type { JsonValue, PayloadRequest } from '../types/index.js'
 
-import { deepCopyObject } from '../utilities/deepCopyObject.js'
+import { deepCopyObjectSimple } from '../utilities/deepCopyObject.js'
 
 type Args = {
-  defaultValue: unknown
+  defaultValue: ((args: any) => JsonValue) | any
   locale: string | undefined
   user: PayloadRequest['user']
-  value?: unknown
+  value?: JsonValue
 }
 
-const getValueWithDefault = ({ defaultValue, locale, user, value }: Args): unknown => {
+export const getDefaultValue = async ({
+  defaultValue,
+  locale,
+  user,
+  value,
+}: Args): Promise<JsonValue> => {
   if (typeof value !== 'undefined') {
     return value
   }
 
   if (defaultValue && typeof defaultValue === 'function') {
-    return defaultValue({ locale, user })
+    return await defaultValue({ locale, user })
   }
 
   if (typeof defaultValue === 'object') {
-    return deepCopyObject(defaultValue)
+    return deepCopyObjectSimple(defaultValue)
   }
 
   return defaultValue
 }
-
-// eslint-disable-next-line no-restricted-exports
-export default getValueWithDefault

packages/payload/src/fields/hooks/afterChange/index.ts

@@ -1,24 +1,24 @@
 import type { SanitizedCollectionConfig } from '../../../collections/config/types.js'
 import type { SanitizedGlobalConfig } from '../../../globals/config/types.js'
-import type { PayloadRequest, RequestContext } from '../../../types/index.js'
+import type { JsonObject, PayloadRequest, RequestContext } from '../../../types/index.js'
 
-import { deepCopyObject } from '../../../utilities/deepCopyObject.js'
+import { deepCopyObjectSimple } from '../../../utilities/deepCopyObject.js'
 import { traverseFields } from './traverseFields.js'
 
-type Args<T> = {
+type Args<T extends JsonObject> = {
   collection: SanitizedCollectionConfig | null
   context: RequestContext
   /**
    * The data before hooks
    */
-  data: Record<string, unknown> | T
+  data: T
   /**
    * The data after hooks
    */
-  doc: Record<string, unknown> | T
+  doc: T
   global: SanitizedGlobalConfig | null
   operation: 'create' | 'update'
-  previousDoc: Record<string, unknown> | T
+  previousDoc: T
   req: PayloadRequest
 }
 
@@ -26,7 +26,7 @@ type Args<T> = {
  * This function is responsible for the following actions, in order:
  * - Execute field hooks
  */
-export const afterChange = async <T extends Record<string, unknown>>({
+export const afterChange = async <T extends JsonObject>({
   collection,
   context,
   data,
@@ -36,7 +36,7 @@ export const afterChange = async <T extends Record<string, unknown>>({
   previousDoc,
   req,
 }: Args<T>): Promise<T> => {
-  const doc = deepCopyObject(incomingDoc)
+  const doc = deepCopyObjectSimple(incomingDoc)
 
   await traverseFields({
     collection,

packages/payload/src/fields/hooks/afterChange/promise.ts

@@ -1,7 +1,7 @@
 import type { RichTextAdapter } from '../../../admin/RichText.js'
 import type { SanitizedCollectionConfig } from '../../../collections/config/types.js'
 import type { SanitizedGlobalConfig } from '../../../globals/config/types.js'
-import type { PayloadRequest, RequestContext } from '../../../types/index.js'
+import type { JsonObject, PayloadRequest, RequestContext } from '../../../types/index.js'
 import type { Field, TabAsField } from '../../config/types.js'
 
 import { MissingEditorProp } from '../../../errors/index.js'
@@ -12,8 +12,8 @@ import { traverseFields } from './traverseFields.js'
 type Args = {
   collection: SanitizedCollectionConfig | null
   context: RequestContext
-  data: Record<string, unknown>
-  doc: Record<string, unknown>
+  data: JsonObject
+  doc: JsonObject
   field: Field | TabAsField
   global: SanitizedGlobalConfig | null
   operation: 'create' | 'update'
@@ -25,11 +25,11 @@ type Args = {
    * The parent's schemaPath (path without indexes).
    */
   parentSchemaPath: string[]
-  previousDoc: Record<string, unknown>
-  previousSiblingDoc: Record<string, unknown>
+  previousDoc: JsonObject
+  previousSiblingDoc: JsonObject
   req: PayloadRequest
-  siblingData: Record<string, unknown>
-  siblingDoc: Record<string, unknown>
+  siblingData: JsonObject
+  siblingDoc: JsonObject
 }
 
 // This function is responsible for the following actions, in order:
@@ -101,11 +101,11 @@ export const promise = async ({
         operation,
         path: fieldPath,
         previousDoc,
-        previousSiblingDoc: previousDoc[field.name] as Record<string, unknown>,
+        previousSiblingDoc: previousDoc[field.name] as JsonObject,
         req,
         schemaPath: fieldSchemaPath,
-        siblingData: (siblingData?.[field.name] as Record<string, unknown>) || {},
-        siblingDoc: siblingDoc[field.name] as Record<string, unknown>,
+        siblingData: (siblingData?.[field.name] as JsonObject) || {},
+        siblingDoc: siblingDoc[field.name] as JsonObject,
       })
 
       break
@@ -128,11 +128,11 @@ export const promise = async ({
               operation,
               path: [...fieldPath, i],
               previousDoc,
-              previousSiblingDoc: previousDoc?.[field.name]?.[i] || ({} as Record<string, unknown>),
+              previousSiblingDoc: previousDoc?.[field.name]?.[i] || ({} as JsonObject),
               req,
               schemaPath: fieldSchemaPath,
               siblingData: siblingData?.[field.name]?.[i] || {},
-              siblingDoc: { ...row } || {},
+              siblingDoc: ({ ...(row as JsonObject) } as JsonObject) || {},
             }),
           )
         })
@@ -147,7 +147,9 @@ export const promise = async ({
       if (Array.isArray(rows)) {
         const promises = []
         rows.forEach((row, i) => {
-          const block = field.blocks.find((blockType) => blockType.slug === row.blockType)
+          const block = field.blocks.find(
+            (blockType) => blockType.slug === (row as JsonObject).blockType,
+          )
 
           if (block) {
             promises.push(
@@ -161,12 +163,11 @@ export const promise = async ({
                 operation,
                 path: [...fieldPath, i],
                 previousDoc,
-                previousSiblingDoc:
-                  previousDoc?.[field.name]?.[i] || ({} as Record<string, unknown>),
+                previousSiblingDoc: previousDoc?.[field.name]?.[i] || ({} as JsonObject),
                 req,
                 schemaPath: fieldSchemaPath,
                 siblingData: siblingData?.[field.name]?.[i] || {},
-                siblingDoc: { ...row } || {},
+                siblingDoc: ({ ...(row as JsonObject) } as JsonObject) || {},
               }),
             )
           }
@@ -205,9 +206,9 @@ export const promise = async ({
       let tabPreviousSiblingDoc = siblingDoc
 
       if (tabHasName(field)) {
-        tabSiblingData = siblingData[field.name] as Record<string, unknown>
-        tabSiblingDoc = siblingDoc[field.name] as Record<string, unknown>
-        tabPreviousSiblingDoc = previousDoc[field.name] as Record<string, unknown>
+        tabSiblingData = siblingData[field.name] as JsonObject
+        tabSiblingDoc = siblingDoc[field.name] as JsonObject
+        tabPreviousSiblingDoc = previousDoc[field.name] as JsonObject
       }
 
       await traverseFields({

packages/payload/src/fields/hooks/afterChange/traverseFields.ts

@@ -1,6 +1,6 @@
 import type { SanitizedCollectionConfig } from '../../../collections/config/types.js'
 import type { SanitizedGlobalConfig } from '../../../globals/config/types.js'
-import type { PayloadRequest, RequestContext } from '../../../types/index.js'
+import type { JsonObject, PayloadRequest, RequestContext } from '../../../types/index.js'
 import type { Field, TabAsField } from '../../config/types.js'
 
 import { promise } from './promise.js'
@@ -8,18 +8,18 @@ import { promise } from './promise.js'
 type Args = {
   collection: SanitizedCollectionConfig | null
   context: RequestContext
-  data: Record<string, unknown>
-  doc: Record<string, unknown>
+  data: JsonObject
+  doc: JsonObject
   fields: (Field | TabAsField)[]
   global: SanitizedGlobalConfig | null
   operation: 'create' | 'update'
   path: (number | string)[]
-  previousDoc: Record<string, unknown>
-  previousSiblingDoc: Record<string, unknown>
+  previousDoc: JsonObject
+  previousSiblingDoc: JsonObject
   req: PayloadRequest
   schemaPath: string[]
-  siblingData: Record<string, unknown>
-  siblingDoc: Record<string, unknown>
+  siblingData: JsonObject
+  siblingDoc: JsonObject
 }
 
 export const traverseFields = async ({

packages/payload/src/fields/hooks/afterRead/index.ts

@@ -1,16 +1,16 @@
 import type { SanitizedCollectionConfig } from '../../../collections/config/types.js'
 import type { SanitizedGlobalConfig } from '../../../globals/config/types.js'
-import type { PayloadRequest, RequestContext } from '../../../types/index.js'
+import type { JsonObject, PayloadRequest, RequestContext } from '../../../types/index.js'
 
-import { deepCopyObject } from '../../../utilities/deepCopyObject.js'
+import { deepCopyObjectSimple } from '../../../utilities/deepCopyObject.js'
 import { traverseFields } from './traverseFields.js'
 
-type Args = {
+type Args<T extends JsonObject> = {
   collection: SanitizedCollectionConfig | null
   context: RequestContext
   currentDepth?: number
   depth: number
-  doc: Record<string, unknown>
+  doc: T
   draft: boolean
   fallbackLocale: null | string
   findMany?: boolean
@@ -32,7 +32,7 @@ type Args = {
  * - Populate relationships
  */
 
-export async function afterRead<T = any>(args: Args): Promise<T> {
+export async function afterRead<T extends JsonObject>(args: Args<T>): Promise<T> {
   const {
     collection,
     context,
@@ -50,7 +50,7 @@ export async function afterRead<T = any>(args: Args): Promise<T> {
     showHiddenFields,
   } = args
 
-  const doc = deepCopyObject(incomingDoc)
+  const doc = deepCopyObjectSimple(incomingDoc)
   const fieldPromises = []
   const populationPromises = []
 

packages/payload/src/fields/hooks/afterRead/promise.ts

@@ -1,12 +1,12 @@
 import type { RichTextAdapter } from '../../../admin/RichText.js'
 import type { SanitizedCollectionConfig } from '../../../collections/config/types.js'
 import type { SanitizedGlobalConfig } from '../../../globals/config/types.js'
-import type { PayloadRequest, RequestContext } from '../../../types/index.js'
+import type { JsonObject, PayloadRequest, RequestContext } from '../../../types/index.js'
 import type { Field, TabAsField } from '../../config/types.js'
 
 import { MissingEditorProp } from '../../../errors/index.js'
 import { fieldAffectsData, tabHasName } from '../../config/types.js'
-import getValueWithDefault from '../../getDefaultValue.js'
+import { getDefaultValue } from '../../getDefaultValue.js'
 import { getFieldPaths } from '../../getFieldPaths.js'
 import { relationshipPopulationPromise } from './relationshipPopulationPromise.js'
 import { traverseFields } from './traverseFields.js'
@@ -16,7 +16,7 @@ type Args = {
   context: RequestContext
   currentDepth: number
   depth: number
-  doc: Record<string, unknown>
+  doc: JsonObject
   draft: boolean
   fallbackLocale: null | string
   field: Field | TabAsField
@@ -40,7 +40,7 @@ type Args = {
   populationPromises: Promise<void>[]
   req: PayloadRequest
   showHiddenFields: boolean
-  siblingDoc: Record<string, unknown>
+  siblingDoc: JsonObject
   triggerAccessControl?: boolean
   triggerHooks?: boolean
 }
@@ -276,7 +276,7 @@ export const promise = async ({
       typeof siblingDoc[field.name] === 'undefined' &&
       typeof field.defaultValue !== 'undefined'
     ) {
-      siblingDoc[field.name] = await getValueWithDefault({
+      siblingDoc[field.name] = await getDefaultValue({
         defaultValue: field.defaultValue,
         locale,
         user: req.user,
@@ -304,7 +304,7 @@ export const promise = async ({
 
   switch (field.type) {
     case 'group': {
-      let groupDoc = siblingDoc[field.name] as Record<string, unknown>
+      let groupDoc = siblingDoc[field.name] as JsonObject
       if (typeof siblingDoc[field.name] !== 'object') groupDoc = {}
 
       traverseFields({
@@ -336,7 +336,7 @@ export const promise = async ({
     }
 
     case 'array': {
-      const rows = siblingDoc[field.name]
+      const rows = siblingDoc[field.name] as JsonObject
 
       if (Array.isArray(rows)) {
         rows.forEach((row, i) => {
@@ -389,7 +389,7 @@ export const promise = async ({
                 req,
                 schemaPath: fieldSchemaPath,
                 showHiddenFields,
-                siblingDoc: row || {},
+                siblingDoc: (row as JsonObject) || {},
                 triggerAccessControl,
                 triggerHooks,
               })
@@ -407,7 +407,9 @@ export const promise = async ({
 
       if (Array.isArray(rows)) {
         rows.forEach((row, i) => {
-          const block = field.blocks.find((blockType) => blockType.slug === row.blockType)
+          const block = field.blocks.find(
+            (blockType) => blockType.slug === (row as JsonObject).blockType,
+          )
 
           if (block) {
             traverseFields({
@@ -430,7 +432,7 @@ export const promise = async ({
               req,
               schemaPath: fieldSchemaPath,
               showHiddenFields,
-              siblingDoc: row || {},
+              siblingDoc: (row as JsonObject) || {},
               triggerAccessControl,
               triggerHooks,
             })
@@ -440,7 +442,9 @@ export const promise = async ({
         Object.values(rows).forEach((localeRows) => {
           if (Array.isArray(localeRows)) {
             localeRows.forEach((row, i) => {
-              const block = field.blocks.find((blockType) => blockType.slug === row.blockType)
+              const block = field.blocks.find(
+                (blockType) => blockType.slug === (row as JsonObject).blockType,
+              )
 
               if (block) {
                 traverseFields({
@@ -463,7 +467,7 @@ export const promise = async ({
                   req,
                   schemaPath: fieldSchemaPath,
                   showHiddenFields,
-                  siblingDoc: row || {},
+                  siblingDoc: (row as JsonObject) || {},
                   triggerAccessControl,
                   triggerHooks,
                 })
@@ -511,7 +515,7 @@ export const promise = async ({
     case 'tab': {
       let tabDoc = siblingDoc
       if (tabHasName(field)) {
-        tabDoc = siblingDoc[field.name] as Record<string, unknown>
+        tabDoc = siblingDoc[field.name] as JsonObject
         if (typeof siblingDoc[field.name] !== 'object') tabDoc = {}
       }
 

packages/payload/src/fields/hooks/afterRead/traverseFields.ts

@@ -1,6 +1,6 @@
 import type { SanitizedCollectionConfig } from '../../../collections/config/types.js'
 import type { SanitizedGlobalConfig } from '../../../globals/config/types.js'
-import type { PayloadRequest, RequestContext } from '../../../types/index.js'
+import type { JsonObject, PayloadRequest, RequestContext } from '../../../types/index.js'
 import type { Field, TabAsField } from '../../config/types.js'
 
 import { promise } from './promise.js'
@@ -10,7 +10,7 @@ type Args = {
   context: RequestContext
   currentDepth: number
   depth: number
-  doc: Record<string, unknown>
+  doc: JsonObject
   draft: boolean
   fallbackLocale: null | string
   /**
@@ -28,7 +28,7 @@ type Args = {
   req: PayloadRequest
   schemaPath: string[]
   showHiddenFields: boolean
-  siblingDoc: Record<string, unknown>
+  siblingDoc: JsonObject
   triggerAccessControl?: boolean
   triggerHooks?: boolean
 }

packages/payload/src/fields/hooks/beforeChange/cloneDataFromOriginalDoc.ts

@@ -1,4 +1,8 @@
-export const cloneDataFromOriginalDoc = (originalDocData: unknown): unknown => {
+import type { JsonArray, JsonObject } from '../../../types/index.js'
+
+export const cloneDataFromOriginalDoc = (
+  originalDocData: JsonArray | JsonObject,
+): JsonArray | JsonObject => {
   if (Array.isArray(originalDocData)) {
     return originalDocData.map((row) => {
       if (typeof row === 'object' && row != null) {

packages/payload/src/fields/hooks/beforeChange/getExistingRowDoc.ts

@@ -4,11 +4,9 @@
  * this is an existing row, so it should be merged.
  * Otherwise, return an empty object.
  */
+import type { JsonObject } from '../../../types/index.js'
 
-export const getExistingRowDoc = (
-  incomingRow: Record<string, unknown>,
-  existingRows?: unknown,
-): Record<string, unknown> => {
+export const getExistingRowDoc = (incomingRow: JsonObject, existingRows?: unknown): JsonObject => {
   if (incomingRow.id && Array.isArray(existingRows)) {
     const matchedExistingRow = existingRows.find((existingRow) => {
       if (typeof existingRow === 'object' && 'id' in existingRow) {

packages/payload/src/fields/hooks/beforeChange/index.ts

@@ -1,17 +1,17 @@
 import type { SanitizedCollectionConfig } from '../../../collections/config/types.js'
 import type { SanitizedGlobalConfig } from '../../../globals/config/types.js'
-import type { Operation, PayloadRequest, RequestContext } from '../../../types/index.js'
+import type { JsonObject, Operation, PayloadRequest, RequestContext } from '../../../types/index.js'
 
 import { ValidationError } from '../../../errors/index.js'
-import { deepCopyObject } from '../../../utilities/deepCopyObject.js'
+import { deepCopyObjectSimple } from '../../../utilities/deepCopyObject.js'
 import { traverseFields } from './traverseFields.js'
 
-type Args<T> = {
+type Args<T extends JsonObject> = {
   collection: SanitizedCollectionConfig | null
   context: RequestContext
-  data: Record<string, unknown> | T
-  doc: Record<string, unknown> | T
-  docWithLocales: Record<string, unknown>
+  data: T
+  doc: T
+  docWithLocales: JsonObject
   duplicate?: boolean
   global: SanitizedGlobalConfig | null
   id?: number | string
@@ -29,7 +29,7 @@ type Args<T> = {
  * - beforeDuplicate hooks (if duplicate)
  * - Unflatten locales. The input `data` is the normal document for one locale. The output result will become the document with locales.
  */
-export const beforeChange = async <T extends Record<string, unknown>>({
+export const beforeChange = async <T extends JsonObject>({
   id,
   collection,
   context,
@@ -42,7 +42,7 @@ export const beforeChange = async <T extends Record<string, unknown>>({
   req,
   skipValidation,
 }: Args<T>): Promise<T> => {
-  const data = deepCopyObject(incomingData)
+  const data = deepCopyObjectSimple(incomingData)
   const mergeLocaleActions = []
   const errors: { field: string; message: string }[] = []
 

packages/payload/src/fields/hooks/beforeChange/promise.ts

@@ -1,12 +1,11 @@
-import merge from 'deepmerge'
-
 import type { RichTextAdapter } from '../../../admin/RichText.js'
 import type { SanitizedCollectionConfig } from '../../../collections/config/types.js'
 import type { SanitizedGlobalConfig } from '../../../globals/config/types.js'
-import type { Operation, PayloadRequest, RequestContext } from '../../../types/index.js'
+import type { JsonObject, Operation, PayloadRequest, RequestContext } from '../../../types/index.js'
 import type { Field, FieldHookArgs, TabAsField, ValidateOptions } from '../../config/types.js'
 
 import { MissingEditorProp } from '../../../errors/index.js'
+import { deepMergeWithSourceArrays } from '../../../utilities/deepMerge.js'
 import { fieldAffectsData, tabHasName } from '../../config/types.js'
 import { getFieldPaths } from '../../getFieldPaths.js'
 import { beforeDuplicate } from './beforeDuplicate.js'
@@ -16,9 +15,9 @@ import { traverseFields } from './traverseFields.js'
 type Args = {
   collection: SanitizedCollectionConfig | null
   context: RequestContext
-  data: Record<string, unknown>
-  doc: Record<string, unknown>
-  docWithLocales: Record<string, unknown>
+  data: JsonObject
+  doc: JsonObject
+  docWithLocales: JsonObject
   duplicate: boolean
   errors: { field: string; message: string }[]
   field: Field | TabAsField
@@ -35,9 +34,9 @@ type Args = {
    */
   parentSchemaPath: string[]
   req: PayloadRequest
-  siblingData: Record<string, unknown>
-  siblingDoc: Record<string, unknown>
-  siblingDocWithLocales?: Record<string, unknown>
+  siblingData: JsonObject
+  siblingDoc: JsonObject
+  siblingDocWithLocales?: JsonObject
   skipValidation: boolean
 }
 
@@ -137,12 +136,12 @@ export const promise = async ({
       const validationResult = await field.validate(valueToValidate, {
         ...field,
         id,
-        data: merge(doc, data, { arrayMerge: (_, source) => source }),
+        data: deepMergeWithSourceArrays(doc, data),
         jsonError,
         operation,
         preferences: { fields: {} },
         req,
-        siblingData: merge(siblingDoc, siblingData, { arrayMerge: (_, source) => source }),
+        siblingData: deepMergeWithSourceArrays(siblingDoc, siblingData),
       } as ValidateOptions<any, any, { jsonError: object }>)
 
       if (typeof validationResult === 'string') {
@@ -173,7 +172,7 @@ export const promise = async ({
     if (localization && field.localized) {
       mergeLocaleActions.push(async () => {
         const localeData = await localization.localeCodes.reduce(
-          async (localizedValuesPromise: Promise<Record<string, unknown>>, locale) => {
+          async (localizedValuesPromise: Promise<JsonObject>, locale) => {
             const localizedValues = await localizedValuesPromise
             let fieldValue =
               locale === req.locale
@@ -253,9 +252,9 @@ export const promise = async ({
         path: fieldPath,
         req,
         schemaPath: fieldSchemaPath,
-        siblingData: siblingData[field.name] as Record<string, unknown>,
-        siblingDoc: siblingDoc[field.name] as Record<string, unknown>,
-        siblingDocWithLocales: siblingDocWithLocales[field.name] as Record<string, unknown>,
+        siblingData: siblingData[field.name] as JsonObject,
+        siblingDoc: siblingDoc[field.name] as JsonObject,
+        siblingDocWithLocales: siblingDocWithLocales[field.name] as JsonObject,
         skipValidation: skipValidationFromHere,
       })
 
@@ -285,9 +284,12 @@ export const promise = async ({
               path: [...fieldPath, i],
               req,
               schemaPath: fieldSchemaPath,
-              siblingData: row,
-              siblingDoc: getExistingRowDoc(row, siblingDoc[field.name]),
-              siblingDocWithLocales: getExistingRowDoc(row, siblingDocWithLocales[field.name]),
+              siblingData: row as JsonObject,
+              siblingDoc: getExistingRowDoc(row as JsonObject, siblingDoc[field.name]),
+              siblingDocWithLocales: getExistingRowDoc(
+                row as JsonObject,
+                siblingDocWithLocales[field.name],
+              ),
               skipValidation: skipValidationFromHere,
             }),
           )
@@ -305,10 +307,13 @@ export const promise = async ({
       if (Array.isArray(rows)) {
         const promises = []
         rows.forEach((row, i) => {
-          const rowSiblingDoc = getExistingRowDoc(row, siblingDoc[field.name])
-          const rowSiblingDocWithLocales = getExistingRowDoc(row, siblingDocWithLocales[field.name])
+          const rowSiblingDoc = getExistingRowDoc(row as JsonObject, siblingDoc[field.name])
+          const rowSiblingDocWithLocales = getExistingRowDoc(
+            row as JsonObject,
+            siblingDocWithLocales[field.name],
+          )
 
-          const blockTypeToMatch = row.blockType || rowSiblingDoc.blockType
+          const blockTypeToMatch = (row as JsonObject).blockType || rowSiblingDoc.blockType
           const block = field.blocks.find((blockType) => blockType.slug === blockTypeToMatch)
 
           if (block) {
@@ -329,7 +334,7 @@ export const promise = async ({
                 path: [...fieldPath, i],
                 req,
                 schemaPath: fieldSchemaPath,
-                siblingData: row,
+                siblingData: row as JsonObject,
                 siblingDoc: rowSiblingDoc,
                 siblingDocWithLocales: rowSiblingDocWithLocales,
                 skipValidation: skipValidationFromHere,
@@ -382,9 +387,9 @@ export const promise = async ({
         if (typeof siblingDocWithLocales[field.name] !== 'object')
           siblingDocWithLocales[field.name] = {}
 
-        tabSiblingData = siblingData[field.name] as Record<string, unknown>
-        tabSiblingDoc = siblingDoc[field.name] as Record<string, unknown>
-        tabSiblingDocWithLocales = siblingDocWithLocales[field.name] as Record<string, unknown>
+        tabSiblingData = siblingData[field.name] as JsonObject
+        tabSiblingDoc = siblingDoc[field.name] as JsonObject
+        tabSiblingDocWithLocales = siblingDocWithLocales[field.name] as JsonObject
       }
 
       await traverseFields({

packages/payload/src/fields/hooks/beforeChange/traverseFields.ts

@@ -1,6 +1,6 @@
 import type { SanitizedCollectionConfig } from '../../../collections/config/types.js'
 import type { SanitizedGlobalConfig } from '../../../globals/config/types.js'
-import type { Operation, PayloadRequest, RequestContext } from '../../../types/index.js'
+import type { JsonObject, Operation, PayloadRequest, RequestContext } from '../../../types/index.js'
 import type { Field, TabAsField } from '../../config/types.js'
 
 import { promise } from './promise.js'
@@ -8,15 +8,15 @@ import { promise } from './promise.js'
 type Args = {
   collection: SanitizedCollectionConfig | null
   context: RequestContext
-  data: Record<string, unknown>
+  data: JsonObject
   /**
    * The original data (not modified by any hooks)
    */
-  doc: Record<string, unknown>
+  doc: JsonObject
   /**
    * The original data with locales (not modified by any hooks)
    */
-  docWithLocales: Record<string, unknown>
+  docWithLocales: JsonObject
   duplicate: boolean
   errors: { field: string; message: string }[]
   fields: (Field | TabAsField)[]
@@ -27,15 +27,15 @@ type Args = {
   path: (number | string)[]
   req: PayloadRequest
   schemaPath: string[]
-  siblingData: Record<string, unknown>
+  siblingData: JsonObject
   /**
    * The original siblingData (not modified by any hooks)
    */
-  siblingDoc: Record<string, unknown>
+  siblingDoc: JsonObject
   /**
    * The original siblingData with locales (not modified by any hooks)
    */
-  siblingDocWithLocales: Record<string, unknown>
+  siblingDocWithLocales: JsonObject
   skipValidation?: boolean
 }
 

packages/payload/src/fields/hooks/beforeValidate/index.ts

@@ -1,15 +1,15 @@
 import type { SanitizedCollectionConfig } from '../../../collections/config/types.js'
 import type { SanitizedGlobalConfig } from '../../../globals/config/types.js'
-import type { PayloadRequest, RequestContext } from '../../../types/index.js'
+import type { JsonObject, PayloadRequest, RequestContext } from '../../../types/index.js'
 
-import { deepCopyObject } from '../../../utilities/deepCopyObject.js'
+import { deepCopyObjectSimple } from '../../../utilities/deepCopyObject.js'
 import { traverseFields } from './traverseFields.js'
 
-type Args<T> = {
+type Args<T extends JsonObject> = {
   collection: SanitizedCollectionConfig | null
   context: RequestContext
-  data: Record<string, unknown> | T
-  doc?: Record<string, unknown> | T
+  data: T
+  doc?: T
   duplicate?: boolean
   global: SanitizedGlobalConfig | null
   id?: number | string
@@ -26,7 +26,7 @@ type Args<T> = {
  * - Merge original document data into incoming data
  * - Compute default values for undefined fields
  */
-export const beforeValidate = async <T extends Record<string, unknown>>({
+export const beforeValidate = async <T extends JsonObject>({
   id,
   collection,
   context,
@@ -37,7 +37,7 @@ export const beforeValidate = async <T extends Record<string, unknown>>({
   overrideAccess,
   req,
 }: Args<T>): Promise<T> => {
-  const data = deepCopyObject(incomingData)
+  const data = deepCopyObjectSimple(incomingData)
 
   await traverseFields({
     id,

packages/payload/src/fields/hooks/beforeValidate/promise.ts

@@ -1,12 +1,12 @@
 import type { RichTextAdapter } from '../../../admin/RichText.js'
 import type { SanitizedCollectionConfig } from '../../../collections/config/types.js'
 import type { SanitizedGlobalConfig } from '../../../globals/config/types.js'
-import type { PayloadRequest, RequestContext } from '../../../types/index.js'
+import type { JsonObject, JsonValue, PayloadRequest, RequestContext } from '../../../types/index.js'
 import type { Field, TabAsField } from '../../config/types.js'
 
 import { MissingEditorProp } from '../../../errors/index.js'
 import { fieldAffectsData, tabHasName, valueIsValueWithRelation } from '../../config/types.js'
-import getValueWithDefault from '../../getDefaultValue.js'
+import { getDefaultValue } from '../../getDefaultValue.js'
 import { getFieldPaths } from '../../getFieldPaths.js'
 import { cloneDataFromOriginalDoc } from '../beforeChange/cloneDataFromOriginalDoc.js'
 import { getExistingRowDoc } from '../beforeChange/getExistingRowDoc.js'
@@ -28,11 +28,11 @@ type Args<T> = {
   parentPath: (number | string)[]
   parentSchemaPath: string[]
   req: PayloadRequest
-  siblingData: Record<string, unknown>
+  siblingData: JsonObject
   /**
    * The original siblingData (not modified by any hooks)
    */
-  siblingDoc: Record<string, unknown>
+  siblingDoc: JsonObject
 }
 
 // This function is responsible for the following actions, in order:
@@ -149,7 +149,7 @@ export const promise = async <T>({
 
         if (Array.isArray(field.relationTo)) {
           if (Array.isArray(value)) {
-            value.forEach((relatedDoc: { relationTo: string; value: unknown }, i) => {
+            value.forEach((relatedDoc: { relationTo: string; value: JsonValue }, i) => {
               const relatedCollection = req.payload.config.collections.find(
                 (collection) => collection.slug === relatedDoc.relationTo,
               )
@@ -270,11 +270,11 @@ export const promise = async <T>({
     if (typeof siblingData[field.name] === 'undefined') {
       // If no incoming data, but existing document data is found, merge it in
       if (typeof siblingDoc[field.name] !== 'undefined') {
-        siblingData[field.name] = cloneDataFromOriginalDoc(siblingDoc[field.name])
+        siblingData[field.name] = cloneDataFromOriginalDoc(siblingDoc[field.name] as any)
 
         // Otherwise compute default value
       } else if (typeof field.defaultValue !== 'undefined') {
-        siblingData[field.name] = await getValueWithDefault({
+        siblingData[field.name] = await getDefaultValue({
           defaultValue: field.defaultValue,
           locale: req.locale,
           user: req.user,
@@ -306,8 +306,8 @@ export const promise = async <T>({
         path: fieldPath,
         req,
         schemaPath: fieldSchemaPath,
-        siblingData: groupData,
-        siblingDoc: groupDoc,
+        siblingData: groupData as JsonObject,
+        siblingDoc: groupDoc as JsonObject,
       })
 
       break
@@ -333,8 +333,8 @@ export const promise = async <T>({
               path: [...fieldPath, i],
               req,
               schemaPath: fieldSchemaPath,
-              siblingData: row,
-              siblingDoc: getExistingRowDoc(row, siblingDoc[field.name]),
+              siblingData: row as JsonObject,
+              siblingDoc: getExistingRowDoc(row as JsonObject, siblingDoc[field.name]),
             }),
           )
         })
@@ -349,12 +349,12 @@ export const promise = async <T>({
       if (Array.isArray(rows)) {
         const promises = []
         rows.forEach((row, i) => {
-          const rowSiblingDoc = getExistingRowDoc(row, siblingDoc[field.name])
-          const blockTypeToMatch = row.blockType || rowSiblingDoc.blockType
+          const rowSiblingDoc = getExistingRowDoc(row as JsonObject, siblingDoc[field.name])
+          const blockTypeToMatch = (row as JsonObject).blockType || rowSiblingDoc.blockType
           const block = field.blocks.find((blockType) => blockType.slug === blockTypeToMatch)
 
           if (block) {
-            row.blockType = blockTypeToMatch
+            ;(row as JsonObject).blockType = blockTypeToMatch
 
             promises.push(
               traverseFields({
@@ -370,7 +370,7 @@ export const promise = async <T>({
                 path: [...fieldPath, i],
                 req,
                 schemaPath: fieldSchemaPath,
-                siblingData: row,
+                siblingData: row as JsonObject,
                 siblingDoc: rowSiblingDoc,
               }),
             )

packages/payload/src/fields/hooks/beforeValidate/traverseFields.ts

@@ -1,6 +1,6 @@
 import type { SanitizedCollectionConfig } from '../../../collections/config/types.js'
 import type { SanitizedGlobalConfig } from '../../../globals/config/types.js'
-import type { PayloadRequest, RequestContext } from '../../../types/index.js'
+import type { JsonObject, PayloadRequest, RequestContext } from '../../../types/index.js'
 import type { Field, TabAsField } from '../../config/types.js'
 
 import { promise } from './promise.js'
@@ -21,11 +21,11 @@ type Args<T> = {
   path: (number | string)[]
   req: PayloadRequest
   schemaPath: string[]
-  siblingData: Record<string, unknown>
+  siblingData: JsonObject
   /**
    * The original siblingData (not modified by any hooks)
    */
-  siblingDoc: Record<string, unknown>
+  siblingDoc: JsonObject
 }
 
 export const traverseFields = async <T>({

packages/payload/src/fields/mergeBaseFields.ts

@@ -1,7 +1,6 @@
-import merge from 'deepmerge'
-
 import type { Field, FieldWithSubFields } from './config/types.js'
 
+import { deepMergeWithReactComponents } from '../utilities/deepMerge.js'
 import { fieldAffectsData, fieldHasSubFields } from './config/types.js'
 
 const mergeBaseFields = (fields: Field[], baseFields: Field[]): Field[] => {
@@ -24,7 +23,7 @@ const mergeBaseFields = (fields: Field[], baseFields: Field[]): Field[] => {
         const matchCopy: Field = { ...match }
         mergedFields.splice(matchedIndex, 1)
 
-        const mergedField = merge<Field>(baseField, matchCopy)
+        const mergedField = deepMergeWithReactComponents<Field>(baseField, matchCopy)
 
         if (fieldHasSubFields(baseField) && fieldHasSubFields(matchCopy)) {
           ;(mergedField as FieldWithSubFields).fields = mergeBaseFields(

packages/payload/src/globals/operations/findOne.ts

@@ -1,5 +1,4 @@
 import type { AccessResult } from '../../config/types.js'
-import type { GeneratedTypes } from '../../index.js'
 import type { PayloadRequest, Where } from '../../types/index.js'
 import type { SanitizedGlobalConfig } from '../config/types.js'
 

packages/payload/src/globals/operations/findVersionByID.ts

@@ -8,6 +8,7 @@ import { combineQueries } from '../../database/combineQueries.js'
 import { Forbidden, NotFound } from '../../errors/index.js'
 import { afterRead } from '../../fields/hooks/afterRead/index.js'
 import { commitTransaction } from '../../utilities/commitTransaction.js'
+import { deepCopyObjectSimple } from '../../utilities/deepCopyObject.js'
 import { initTransaction } from '../../utilities/initTransaction.js'
 import { killTransaction } from '../../utilities/killTransaction.js'
 
@@ -78,7 +79,7 @@ export const findVersionByIDOperation = async <T extends TypeWithVersion<T> = an
     }
 
     // Clone the result - it may have come back memoized
-    let result = JSON.parse(JSON.stringify(results[0]))
+    let result: any = deepCopyObjectSimple(results[0])
 
     // Patch globalType onto version doc
     result.version.globalType = globalConfig.slug

packages/payload/src/globals/operations/findVersions.ts

@@ -87,7 +87,7 @@ export const findVersionsOperation = async <T extends TypeWithVersion<T>>(
       docs: await Promise.all(
         paginatedDocs.docs.map(async (data) => ({
           ...data,
-          version: await afterRead({
+          version: await afterRead<T>({
             collection: null,
             context: req.context,
             depth,

packages/payload/src/globals/operations/update.ts

@@ -1,6 +1,6 @@
 import type { DeepPartial } from 'ts-essentials'
 
-import type { GlobalSlug } from '../../index.js'
+import type { GlobalSlug, JsonObject } from '../../index.js'
 import type { PayloadRequest, Where } from '../../types/index.js'
 import type { DataFromGlobalSlug, SanitizedGlobalConfig } from '../config/types.js'
 
@@ -9,6 +9,7 @@ import { afterChange } from '../../fields/hooks/afterChange/index.js'
 import { afterRead } from '../../fields/hooks/afterRead/index.js'
 import { beforeChange } from '../../fields/hooks/beforeChange/index.js'
 import { beforeValidate } from '../../fields/hooks/beforeValidate/index.js'
+import { deepCopyObjectSimple } from '../../index.js'
 import { commitTransaction } from '../../utilities/commitTransaction.js'
 import { initTransaction } from '../../utilities/initTransaction.js'
 import { killTransaction } from '../../utilities/killTransaction.js'
@@ -81,10 +82,10 @@ export const updateOperation = async <TSlug extends GlobalSlug>(
       where: query,
     })
 
-    let globalJSON: Record<string, unknown> = {}
+    let globalJSON: JsonObject = {}
 
     if (global) {
-      globalJSON = JSON.parse(JSON.stringify(global))
+      globalJSON = deepCopyObjectSimple(global)
 
       if (globalJSON._id) {
         delete globalJSON._id

packages/payload/src/index.ts

@@ -50,6 +50,7 @@ import type { Options as FindGlobalVersionByIDOptions } from './globals/operatio
 import type { Options as FindGlobalVersionsOptions } from './globals/operations/local/findVersions.js'
 import type { Options as RestoreGlobalVersionOptions } from './globals/operations/local/restoreVersion.js'
 import type { Options as UpdateGlobalOptions } from './globals/operations/local/update.js'
+import type { JsonObject } from './types/index.js'
 import type { TypeWithVersion } from './versions/types.js'
 
 import { decrypt, encrypt } from './auth/crypto.js'
@@ -85,10 +86,10 @@ export interface GeneratedTypes {
     }
   }
   collectionsUntyped: {
-    [slug: string]: Record<string, unknown> & TypeWithID
+    [slug: string]: JsonObject & TypeWithID
   }
   globalsUntyped: {
-    [slug: string]: Record<string, unknown>
+    [slug: string]: JsonObject
   }
   localeUntyped: null | string
   userUntyped: User
@@ -925,7 +926,7 @@ export type {
   ValidateOptions,
   ValueWithRelation,
 } from './fields/config/types.js'
-export { default as getDefaultValue } from './fields/getDefaultValue.js'
+export { getDefaultValue } from './fields/getDefaultValue.js'
 export { traverseFields as afterChangeTraverseFields } from './fields/hooks/afterChange/traverseFields.js'
 export { promise as afterReadPromise } from './fields/hooks/afterRead/promise.js'
 export { traverseFields as afterReadTraverseFields } from './fields/hooks/afterRead/traverseFields.js'
@@ -964,7 +965,6 @@ export { getLocalI18n } from './translations/getLocalI18n.js'
 export * from './types/index.js'
 export { getFileByPath } from './uploads/getFileByPath.js'
 export type * from './uploads/types.js'
-export { combineMerge } from './utilities/combineMerge.js'
 export { commitTransaction } from './utilities/commitTransaction.js'
 export {
   configToJSONSchema,
@@ -974,8 +974,17 @@ export {
 } from './utilities/configToJSONSchema.js'
 export { createArrayFromCommaDelineated } from './utilities/createArrayFromCommaDelineated.js'
 export { createLocalReq } from './utilities/createLocalReq.js'
-export { deepCopyObject } from './utilities/deepCopyObject.js'
-export { deepMerge } from './utilities/deepMerge.js'
+export {
+  deepCopyObject,
+  deepCopyObjectComplex,
+  deepCopyObjectSimple,
+} from './utilities/deepCopyObject.js'
+export {
+  deepMerge,
+  deepMergeWithCombinedArrays,
+  deepMergeWithReactComponents,
+  deepMergeWithSourceArrays,
+} from './utilities/deepMerge.js'
 export { default as flattenTopLevelFields } from './utilities/flattenTopLevelFields.js'
 export { formatLabels, formatNames, toWords } from './utilities/formatLabels.js'
 export { getCollectionIDFieldTypes } from './utilities/getCollectionIDFieldTypes.js'
@@ -995,6 +1004,7 @@ export { deleteCollectionVersions } from './versions/deleteCollectionVersions.js
 export { enforceMaxVersions } from './versions/enforceMaxVersions.js'
 export { getLatestCollectionVersion } from './versions/getLatestCollectionVersion.js'
 export { getLatestGlobalVersion } from './versions/getLatestGlobalVersion.js'
-export { getDependencies }
 export { saveVersion } from './versions/saveVersion.js'
+export { getDependencies }
 export type { TypeWithVersion } from './versions/types.js'
+export { deepMergeSimple } from '@payloadcms/translations/utilities'

packages/payload/src/types/index.ts

@@ -68,7 +68,7 @@ type PayloadRequestData = {
    *  2. import { addDataAndFileToRequest } from '@payloadcms/next/utilities'
    *    `await addDataAndFileToRequest(req)`
    * */
-  data?: Record<string, unknown>
+  data?: JsonObject
   /** The file on the request, same rules apply as the `data` property */
   file?: {
     data: Buffer
@@ -89,8 +89,18 @@ export interface RequestContext {
 
 export type Operator = (typeof validOperators)[number]
 
+// Makes it so things like passing new Date() will error
+export type JsonValue = JsonArray | JsonObject | unknown //Date | JsonArray | JsonObject | boolean | null | number | string // TODO: Evaluate proper, strong type for this
+
+export interface JsonArray extends Array<JsonValue> {}
+
+export interface JsonObject {
+  [key: string]: JsonValue
+}
+
 export type WhereField = {
-  [key in Operator]?: unknown
+  // any json-serializable value
+  [key in Operator]?: JsonValue
 }
 
 export type Where = {

packages/payload/src/utilities/combineMerge.ts

@@ -1,16 +0,0 @@
-import merge from 'deepmerge'
-
-export const combineMerge = (target, source, options) => {
-  const destination = target.slice()
-
-  source.forEach((item, index) => {
-    if (typeof destination[index] === 'undefined') {
-      destination[index] = options.cloneUnlessOtherwiseSpecified(item, options)
-    } else if (options.isMergeableObject(item)) {
-      destination[index] = merge(target[index], item, options)
-    } else if (target.indexOf(item) === -1) {
-      destination.push(item)
-    }
-  })
-  return destination
-}

packages/payload/src/utilities/convertData.ts

@@ -1,20 +0,0 @@
-const convertArrayToObject = (arr, key) =>
-  arr.reduce((obj, item) => {
-    if (key) {
-      obj[item[key]] = item
-      return obj
-    }
-
-    obj[item] = {}
-    return obj
-  }, {})
-
-const convertObjectToArray = (arr) => Object.values(arr)
-
-const convertArrayToHash = (arr, key) =>
-  arr.reduce((obj, item, i) => {
-    obj[item[key]] = i
-    return obj
-  }, {})
-
-export { convertArrayToHash, convertArrayToObject, convertObjectToArray }

packages/payload/src/utilities/deepCopyObject.ts

@@ -1,23 +1,179 @@
-export const deepCopyObject = (inObject) => {
-  if (inObject instanceof Date) return inObject
+import type { JsonValue } from '../types/index.js'
 
-  if (inObject instanceof Set) return new Set(inObject)
+/*
+Main deepCopyObject handling - from rfdc: https://github.com/davidmarkclements/rfdc/blob/master/index.js
 
-  if (inObject instanceof Map) return new Map(inObject)
+Copyright 2019 "David Mark Clements <david.mark.clements@gmail.com>"
 
-  if (typeof inObject !== 'object' || inObject === null) {
-    return inObject // Return the value if inObject is not an object
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
+to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+IN THE SOFTWARE.
+*/
+
+function copyBuffer(cur) {
+  if (cur instanceof Buffer) {
+    return Buffer.from(cur)
   }
 
-  // Create an array or object to hold the values
-  const outObject = Array.isArray(inObject) ? [] : {}
-
-  Object.keys(inObject).forEach((key) => {
-    const value = inObject[key]
-
-    // Recursively (deep) copy for nested objects, including arrays
-    outObject[key] = typeof value === 'object' && value !== null ? deepCopyObject(value) : value
-  })
-
-  return outObject
+  return new cur.constructor(cur.buffer.slice(), cur.byteOffset, cur.length)
+}
+
+const constructorHandlers = new Map()
+constructorHandlers.set(Date, (o) => new Date(o))
+constructorHandlers.set(Map, (o, fn) => new Map(cloneArray<any>(Array.from(o), fn)))
+constructorHandlers.set(Set, (o, fn) => new Set(cloneArray(Array.from(o), fn)))
+let handler = null
+
+function cloneArray<T>(a: T, fn): T {
+  const keys = Object.keys(a)
+  const a2 = new Array(keys.length)
+  for (let i = 0; i < keys.length; i++) {
+    const k = keys[i]
+    const cur = a[k]
+    if (typeof cur !== 'object' || cur === null) {
+      a2[k] = cur
+    } else if (cur.constructor !== Object && (handler = constructorHandlers.get(cur.constructor))) {
+      a2[k] = handler(cur, fn)
+    } else if (ArrayBuffer.isView(cur)) {
+      a2[k] = copyBuffer(cur)
+    } else {
+      a2[k] = fn(cur)
+    }
+  }
+  return a2 as T
+}
+
+export const deepCopyObject = <T>(o: T): T => {
+  if (typeof o !== 'object' || o === null) return o
+  if (Array.isArray(o)) return cloneArray(o, deepCopyObject)
+  if (o.constructor !== Object && (handler = constructorHandlers.get(o.constructor))) {
+    return handler(o, deepCopyObject)
+  }
+  const o2 = {}
+  for (const k in o) {
+    if (Object.hasOwnProperty.call(o, k) === false) continue
+    const cur = o[k]
+    if (typeof cur !== 'object' || cur === null) {
+      o2[k as string] = cur
+    } else if (cur.constructor !== Object && (handler = constructorHandlers.get(cur.constructor))) {
+      o2[k as string] = handler(cur, deepCopyObject)
+    } else if (ArrayBuffer.isView(cur)) {
+      o2[k as string] = copyBuffer(cur)
+    } else {
+      o2[k as string] = deepCopyObject(cur)
+    }
+  }
+  return o2 as T
+}
+
+/*
+Fast deepCopyObjectSimple handling - from fast-json-clone: https://github.com/rhysd/fast-json-clone
+
+Benchmark: https://github.com/AlessioGr/fastest-deep-clone-json/blob/main/test/benchmark.js
+*/
+
+/**
+ * A deepCopyObject implementation which only works for JSON objects and arrays, and is faster than
+ * JSON.parse(JSON.stringify(obj))
+ *
+ * @param value The JSON value to be cloned. There are two invariants. 1) It must not contain circles
+ *              as JSON does not allow it. This function will cause infinite loop for such values by
+ *              design. 2) It must contain JSON values only. Other values like `Date`, `Regexp`, `Map`,
+ *              `Set`, `Buffer`, ... are not allowed.
+ * @returns The cloned JSON value.
+ */
+export function deepCopyObjectSimple<T extends JsonValue>(value: T): T {
+  if (typeof value !== 'object' || value === null) {
+    return value
+  } else if (Array.isArray(value)) {
+    return value.map((e) =>
+      typeof e !== 'object' || e === null ? e : deepCopyObjectSimple(e),
+    ) as T
+  } else {
+    if (value instanceof Date) return new Date(value) as unknown as T
+    const ret: { [key: string]: T } = {}
+    for (const k in value) {
+      const v = value[k]
+      ret[k] = typeof v !== 'object' || v === null ? v : (deepCopyObjectSimple(v as T) as any)
+    }
+    return ret as unknown as T
+  }
+}
+
+/**
+ * A deepCopyObject implementation which is slower than deepCopyObject, but more correct.
+ * Can be used if correctness is more important than speed. Supports circular dependencies
+ */
+export function deepCopyObjectComplex<T>(object: T, cache: WeakMap<any, any> = new WeakMap()): T {
+  if (object === null) return null
+
+  if (cache.has(object)) {
+    return cache.get(object)
+  }
+
+  // Handle Date
+  if (object instanceof Date) {
+    return new Date(object.getTime()) as unknown as T
+  }
+
+  // Handle RegExp
+  if (object instanceof RegExp) {
+    return new RegExp(object.source, object.flags) as unknown as T
+  }
+
+  // Handle Map
+  if (object instanceof Map) {
+    const clonedMap = new Map()
+    cache.set(object, clonedMap)
+    for (const [key, value] of object.entries()) {
+      clonedMap.set(key, deepCopyObjectComplex(value, cache))
+    }
+    return clonedMap as unknown as T
+  }
+
+  // Handle Set
+  if (object instanceof Set) {
+    const clonedSet = new Set()
+    cache.set(object, clonedSet)
+    for (const value of object.values()) {
+      clonedSet.add(deepCopyObjectComplex(value, cache))
+    }
+    return clonedSet as unknown as T
+  }
+
+  // Handle Array and Object
+  if (typeof object === 'object' && object !== null) {
+    if ('$$typeof' in object && typeof object.$$typeof === 'symbol') {
+      return object
+    }
+
+    const clonedObject: any = Array.isArray(object)
+      ? []
+      : Object.create(Object.getPrototypeOf(object))
+    cache.set(object, clonedObject)
+
+    for (const key in object) {
+      if (
+        Object.prototype.hasOwnProperty.call(object, key) ||
+        Object.getOwnPropertySymbols(object).includes(key as any)
+      ) {
+        clonedObject[key] = deepCopyObjectComplex(object[key], cache)
+      }
+    }
+
+    return clonedObject as T
+  }
+
+  // Handle all other cases
+  return object
 }

packages/payload/src/utilities/deepMerge.ts

@@ -1,15 +1,46 @@
-export function deepMerge(obj1, obj2) {
-  const output = { ...obj1 }
+import deepMerge from 'deepmerge'
 
-  for (const key in obj2) {
-    if (Object.prototype.hasOwnProperty.call(obj2, key)) {
-      if (typeof obj2[key] === 'object' && !Array.isArray(obj2[key]) && obj1[key]) {
-        output[key] = deepMerge(obj1[key], obj2[key])
-      } else {
-        output[key] = obj2[key]
-      }
+import { isPlainObject } from './isPlainObject.js'
+
+export { deepMerge }
+/**
+ * Fully-featured deepMerge.
+ *
+ * Array handling: Arrays in the target object are combined with the source object's arrays.
+ */
+export function deepMergeWithCombinedArrays<T extends object>(obj1: object, obj2: object): T {
+  return deepMerge<T>(obj1, obj2, {
+    arrayMerge: (target, source, options) => {
+      const destination = target.slice()
+
+      source.forEach((item, index) => {
+        if (typeof destination[index] === 'undefined') {
+          destination[index] = options.cloneUnlessOtherwiseSpecified(item, options)
+        } else if (options.isMergeableObject(item)) {
+          destination[index] = deepMerge(target[index], item, options)
+        } else if (target.indexOf(item) === -1) {
+          destination.push(item)
         }
+      })
+      return destination
+    },
+  })
 }
 
-  return output
+/**
+ * Fully-featured deepMerge.
+ *
+ * Array handling: Arrays in the target object are replaced by the source object's arrays.
+ */
+export function deepMergeWithSourceArrays<T extends object>(obj1: object, obj2: object): T {
+  return deepMerge<T>(obj1, obj2, { arrayMerge: (_, source) => source })
+}
+
+/**
+ * Fully-featured deepMerge. Does not clone React components by default.
+ */
+export function deepMergeWithReactComponents<T extends object>(obj1: object, obj2: object): T {
+  return deepMerge<T>(obj1, obj2, {
+    isMergeableObject: isPlainObject,
+  })
 }

packages/payload/src/utilities/getCSSVariable.ts

@@ -1,2 +0,0 @@
-export default (variable) =>
-  getComputedStyle(document.documentElement).getPropertyValue(`--${variable}`)

packages/payload/src/utilities/isPlainObject.ts

@@ -1,29 +1,11 @@
-function isObject(o: unknown): boolean {
-  return Object.prototype.toString.call(o) === '[object Object]'
-}
+import { isReactComponentOrFunction } from './isReactComponent.js'
 
-export function isPlainObject(o: unknown): boolean {
+export function isPlainObject(o: any): boolean {
   // Is this a React component?
-  if (typeof o === 'object' && '$$typeof' in o && typeof o.$$typeof === 'symbol') {
+  if (isReactComponentOrFunction(o)) {
     return false
   }
 
-  if (isObject(o) === false) return false
-
-  // If has modified constructor
-  const ctor = o.constructor
-  if (ctor === undefined) return true
-
-  // If has modified prototype
-  const prot = ctor.prototype
-  if (isObject(prot) === false) return false
-
-  // If constructor does not have an Object-specific method
-  // eslint-disable-next-line no-prototype-builtins
-  if (prot.hasOwnProperty('isPrototypeOf') === false) {
-    return false
-  }
-
-  // Most likely a plain Object
-  return true
+  // from https://github.com/fastify/deepmerge/blob/master/index.js#L77
+  return typeof o === 'object' && o !== null && !(o instanceof RegExp) && !(o instanceof Date)
 }

packages/payload/src/utilities/overwriteMerge.ts

@@ -1,3 +0,0 @@
-const overwriteMerge = (_, sourceArray) => sourceArray
-
-export default overwriteMerge

packages/payload/src/utilities/telemetry/events/adminInit.ts

@@ -1,4 +1,3 @@
-import type { User } from '../../../auth/types.js'
 import type { Payload } from '../../../index.js'
 import type { PayloadRequest } from '../../../types/index.js'
 

packages/payload/src/versions/drafts/replaceWithDraftIfAvailable.ts

@@ -7,6 +7,7 @@ import type { PayloadRequest, Where } from '../../types/index.js'
 import { hasWhereAccessResult } from '../../auth/index.js'
 import { combineQueries } from '../../database/combineQueries.js'
 import { docHasTimestamps } from '../../types/index.js'
+import { deepCopyObjectSimple } from '../../utilities/deepCopyObject.js'
 import sanitizeInternalFields from '../../utilities/sanitizeInternalFields.js'
 import { appendVersionToQueryKey } from './appendVersionToQueryKey.js'
 
@@ -84,7 +85,7 @@ const replaceWithDraftIfAvailable = async <T extends TypeWithID>({
     return doc
   }
 
-  draft = JSON.parse(JSON.stringify(draft))
+  draft = deepCopyObjectSimple(draft)
   draft = sanitizeInternalFields(draft)
 
   // Patch globalType onto version doc

packages/payload/src/versions/saveVersion.ts

@@ -1,9 +1,9 @@
 import type { SanitizedCollectionConfig, TypeWithID } from '../collections/config/types.js'
 import type { SanitizedGlobalConfig } from '../globals/config/types.js'
-import type { Payload } from '../index.js'
+import type { Payload } from '../index.js';
 import type { PayloadRequest } from '../types/index.js'
 
-import { deepCopyObject } from '../utilities/deepCopyObject.js'
+import { deepCopyObjectSimple } from '../index.js'
 import sanitizeInternalFields from '../utilities/sanitizeInternalFields.js'
 import { enforceMaxVersions } from './enforceMaxVersions.js'
 
@@ -31,7 +31,7 @@ export const saveVersion = async ({
   let result
   let createNewVersion = true
   const now = new Date().toISOString()
-  const versionData = deepCopyObject(doc)
+  const versionData = deepCopyObjectSimple(doc)
   if (draft) versionData._status = 'draft'
   if (versionData._id) delete versionData._id
 

packages/plugin-form-builder/package.json

@@ -48,7 +48,6 @@
   },
   "dependencies": {
     "@payloadcms/ui": "workspace:*",
-    "deepmerge": "^4.2.2",
     "escape-html": "^1.0.3"
   },
   "devDependencies": {

packages/plugin-form-builder/src/collections/Forms/index.ts

@@ -1,6 +1,6 @@
 import type { Block, CollectionConfig, Field } from 'payload'
 
-import merge from 'deepmerge'
+import { deepMergeWithSourceArrays } from 'payload'
 
 import type { FieldConfig, FormBuilderPluginConfig } from '../../types.js'
 
@@ -84,9 +84,7 @@ export const generateFormCollection = (formConfig: FormBuilderPluginConfig): Col
             }
 
             if (typeof block === 'object' && typeof fieldConfig === 'object') {
-              return merge<FieldConfig>(block, fieldConfig, {
-                arrayMerge: (_, sourceArray) => sourceArray,
-              })
+              return deepMergeWithSourceArrays(block, fieldConfig)
             }
 
             if (typeof block === 'function') {

packages/plugin-nested-docs/src/hooks/resaveChildren.ts

@@ -1,4 +1,9 @@
-import type { CollectionAfterChangeHook, CollectionConfig, PayloadRequest } from 'payload'
+import type {
+  CollectionAfterChangeHook,
+  CollectionConfig,
+  JsonObject,
+  PayloadRequest,
+} from 'payload'
 
 import type { NestedDocsPluginConfig } from '../types.js'
 
@@ -6,7 +11,7 @@ import { populateBreadcrumbs } from '../utilities/populateBreadcrumbs.js'
 
 type ResaveArgs = {
   collection: CollectionConfig
-  doc: Record<string, unknown>
+  doc: JsonObject
   draft: boolean
   pluginConfig: NestedDocsPluginConfig
   req: PayloadRequest

packages/plugin-search/package.json

@@ -44,8 +44,7 @@
     "test": "echo \"Error: no tests specified\""
   },
   "dependencies": {
-    "@payloadcms/ui": "workspace:*",
-    "deepmerge": "4.3.1"
+    "@payloadcms/ui": "workspace:*"
   },
   "devDependencies": {
     "@payloadcms/eslint-config": "workspace:*",

packages/plugin-search/src/Search/index.ts

@@ -1,7 +1,5 @@
 import type { CollectionConfig, Field } from 'payload'
 
-import deepMerge from 'deepmerge'
-
 import type { SearchPluginConfig } from '../types.js'
 
 import { LinkToDoc } from './ui/index.js'

packages/plugin-seo/src/index.tsx

@@ -2,7 +2,7 @@ import type { Config, Field, GroupField, TabsField, TextField } from 'payload'
 
 import { addDataAndFileToRequest } from '@payloadcms/next/utilities'
 import { withMergedProps } from '@payloadcms/ui/shared'
-import { deepMerge } from 'payload/shared'
+import { deepMergeSimple } from 'payload/shared'
 
 import type {
   GenerateDescription,
@@ -298,7 +298,7 @@ export const seoPlugin =
       i18n: {
         ...config.i18n,
         translations: {
-          ...deepMerge(translations, config.i18n?.translations),
+          ...deepMergeSimple(translations, config.i18n?.translations),
         },
       },
     }

packages/richtext-lexical/src/exports/client/index.ts

@@ -54,7 +54,6 @@ export {
   sanitizeClientFeatures,
 } from '../../lexical/config/client/sanitize.js'
 export { CAN_USE_DOM } from '../../lexical/utils/canUseDOM.js'
-export { cloneDeep } from '../../lexical/utils/cloneDeep.js'
 export { getDOMRangeRect } from '../../lexical/utils/getDOMRangeRect.js'
 export { getSelectedNode } from '../../lexical/utils/getSelectedNode.js'
 export { isHTMLElement } from '../../lexical/utils/guard.js'

packages/richtext-lexical/src/features/blocks/nodes/BlocksNode.tsx

@@ -9,12 +9,14 @@ import type {
   NodeKey,
   Spread,
 } from 'lexical'
+import type { JsonObject } from 'payload'
 
 import { DecoratorBlockNode } from '@lexical/react/LexicalDecoratorBlockNode.js'
 import ObjectID from 'bson-objectid'
+import { deepCopyObjectSimple } from 'payload/shared'
 import React, { type JSX } from 'react'
 
-export type BlockFields<TBlockFields extends object = Record<string, unknown>> = {
+export type BlockFields<TBlockFields extends JsonObject = JsonObject> = {
   /** Block form data */
   blockName: string
   blockType: string
@@ -27,7 +29,7 @@ const BlockComponent = React.lazy(() =>
   })),
 )
 
-export type SerializedBlockNode<TBlockFields extends object = Record<string, unknown>> = Spread<
+export type SerializedBlockNode<TBlockFields extends JsonObject = JsonObject> = Spread<
   {
     children?: never // required so that our typed editor state doesn't automatically add children
     fields: BlockFields<TBlockFields>
@@ -117,7 +119,7 @@ export class BlockNode extends DecoratorBlockNode {
   }
 
   setFields(fields: BlockFields): void {
-    const fieldsCopy = JSON.parse(JSON.stringify(fields)) as BlockFields
+    const fieldsCopy = deepCopyObjectSimple(fields)
 
     const writable = this.getWritable()
     writable.__fields = fieldsCopy

packages/richtext-lexical/src/features/blocks/nodes/InlineBlocksNode.tsx

@@ -11,6 +11,7 @@ import type {
 
 import ObjectID from 'bson-objectid'
 import { DecoratorNode } from 'lexical'
+import { deepCopyObjectSimple } from 'payload/shared'
 import React, { type JSX } from 'react'
 
 export type InlineBlockFields = {
@@ -112,7 +113,7 @@ export class InlineBlockNode extends DecoratorNode<React.ReactElement> {
   }
 
   setFields(fields: InlineBlockFields): void {
-    const fieldsCopy = JSON.parse(JSON.stringify(fields)) as InlineBlockFields
+    const fieldsCopy = deepCopyObjectSimple(fields) as InlineBlockFields
 
     const writable = this.getWritable()
     writable.__fields = fieldsCopy

packages/richtext-lexical/src/features/blocks/plugin/index.tsx

@@ -99,12 +99,14 @@ export const BlocksPlugin: PluginComponent<BlocksFeatureClientProps> = () => {
             if (!node) {
               return false
             }
+             
             node.setFields(fields as BlockFields)
 
             setTargetNodeKey(null)
             return true
           }
 
+           
           const inlineBlockNode = $createInlineBlockNode(fields as BlockFields)
           $insertNodes([inlineBlockNode])
           if ($isRootOrShadowRoot(inlineBlockNode.getParentOrThrow())) {
@@ -118,9 +120,10 @@ export const BlocksPlugin: PluginComponent<BlocksFeatureClientProps> = () => {
       editor.registerCommand(
         OPEN_INLINE_BLOCK_DRAWER_COMMAND,
         ({ fields, nodeKey }) => {
+           
           setBlockFields((fields as BlockFields) ?? null)
           setTargetNodeKey(nodeKey ?? null)
-          setBlockType((fields as BlockFields)?.blockType ?? ('' as any))
+          setBlockType(fields?.blockType ?? ('' as any))
 
           if (nodeKey) {
             toggleModal(drawerSlug)

packages/richtext-lexical/src/features/link/feature.server.ts

@@ -91,7 +91,7 @@ export const LinkFeature = createServerFeature<
     // Thus, for tasks like validation, we do not want to pass it a text field in the schema which will never have data.
     // Otherwise, it will cause a validation error (field is required).
     const sanitizedFieldsWithoutText = deepCopyObject(sanitizedFields).filter(
-      (field) => field.name !== 'text',
+      (field) => !('name' in field) || field.name !== 'text',
     )
 
     return {

packages/richtext-lexical/src/features/link/nodes/types.ts

@@ -1,14 +1,14 @@
 import type { SerializedElementNode, SerializedLexicalNode, Spread } from 'lexical'
+import type { JsonValue } from 'payload'
 
 export type LinkFields = {
-  // unknown, custom fields:
-  [key: string]: unknown
+  [key: string]: JsonValue
   doc: {
     relationTo: string
     value:
       | {
           // Actual doc data, populated in afterRead hook
-          [key: string]: unknown
+          [key: string]: JsonValue
           id: string
         }
       | string

packages/richtext-lexical/src/features/link/plugins/floatingLinkEditor/utilities.ts

@@ -7,7 +7,10 @@ import { getBaseFields } from '../../drawer/baseFields.js'
  */
 export function transformExtraFields(
   customFieldSchema:
-    | ((args: { config: SanitizedConfig; defaultFields: FieldAffectingData[] }) => Field[])
+    | ((args: {
+        config: SanitizedConfig
+        defaultFields: FieldAffectingData[]
+      }) => (Field | FieldAffectingData)[])
     | Field[],
   config: SanitizedConfig,
   enabledCollections?: CollectionSlug[],
@@ -21,15 +24,15 @@ export function transformExtraFields(
     maxDepth,
   )
 
-  let fields: Field[]
+  let fields: (Field | FieldAffectingData)[]
 
   if (typeof customFieldSchema === 'function') {
     fields = customFieldSchema({ config, defaultFields: baseFields })
   } else if (Array.isArray(customFieldSchema)) {
     fields = customFieldSchema
   } else {
-    fields = baseFields as Field[]
+    fields = baseFields
   }
 
-  return fields
+  return fields as Field[]
 }

packages/richtext-lexical/src/features/typesServer.ts

@@ -10,6 +10,7 @@ import type {
 } from 'lexical'
 import type {
   Field,
+  JsonObject,
   PayloadRequest,
   ReplaceAny,
   RequestContext,
@@ -61,7 +62,7 @@ export type PopulationPromise<T extends SerializedLexicalNode = SerializedLexica
   populationPromises: Promise<void>[]
   req: PayloadRequest
   showHiddenFields: boolean
-  siblingDoc: Record<string, unknown>
+  siblingDoc: JsonObject
 }) => void
 
 export type NodeValidation<T extends SerializedLexicalNode = SerializedLexicalNode> = ({
@@ -241,7 +242,7 @@ export type NodeWithHooks<T extends LexicalNode = any> = {
   getSubFieldsData?: (args: {
     node: ReturnType<ReplaceAny<T, LexicalNode>['exportJSON']>
     req: PayloadRequest
-  }) => Record<string, unknown>
+  }) => JsonObject
   /**
    * Allows you to run population logic when a node's data was requested from graphQL.
    * While `getSubFields` and `getSubFieldsData` automatically handle populating sub-fields (since they run hooks on them), those are only populated in the Rest API.
@@ -397,7 +398,7 @@ export type SanitizedServerFeatures = {
   >
   getSubFieldsData?: Map<
     string,
-    (args: { node: SerializedLexicalNode; req: PayloadRequest }) => Record<string, unknown>
+    (args: { node: SerializedLexicalNode; req: PayloadRequest }) => JsonObject
   >
   graphQLPopulationPromises: Map<string, Array<PopulationPromise>>
   hooks?: {

packages/richtext-lexical/src/features/upload/nodes/UploadNode.tsx

@@ -8,7 +8,7 @@ import type {
   NodeKey,
   Spread,
 } from 'lexical'
-import type { CollectionSlug } from 'payload'
+import type { CollectionSlug, JsonObject } from 'payload'
 import type { JSX } from 'react'
 
 import { DecoratorBlockNode } from '@lexical/react/LexicalDecoratorBlockNode.js'
@@ -21,10 +21,7 @@ const RawUploadComponent = React.lazy(() =>
 )
 
 export type UploadData = {
-  fields: {
-    // unknown, custom fields:
-    [key: string]: unknown
-  }
+  fields: JsonObject
   id: string
   relationTo: CollectionSlug
   value: number | string

packages/richtext-lexical/src/index.ts

@@ -13,6 +13,7 @@ import {
   afterReadTraverseFields,
   beforeChangeTraverseFields,
   beforeValidateTraverseFields,
+  deepCopyObject,
   getDependencies,
   withNullableJSONSchemaType,
 } from 'payload'
@@ -35,7 +36,6 @@ import {
   sanitizeServerEditorConfig,
   sanitizeServerFeatures,
 } from './lexical/config/server/sanitize.js'
-import { cloneDeep } from './lexical/utils/cloneDeep.js'
 import { populateLexicalPopulationPromises } from './populateGraphQL/populateLexicalPopulationPromises.js'
 import { getGenerateComponentMap } from './utilities/generateComponentMap.js'
 import { getGenerateSchemaMap } from './utilities/generateSchemaMap.js'
@@ -93,10 +93,10 @@ export function lexicalEditor(props?: LexicalEditorProps): LexicalRichTextAdapte
           defaultEditorConfig,
           config,
         )
-        features = cloneDeep(defaultEditorFeatures)
+        features = deepCopyObject(defaultEditorFeatures)
       }
 
-      finalSanitizedEditorConfig = cloneDeep(defaultSanitizedServerEditorConfig)
+      finalSanitizedEditorConfig = deepCopyObject(defaultSanitizedServerEditorConfig)
 
       resolvedFeatureMap = finalSanitizedEditorConfig.resolvedFeatureMap
     } else {
@@ -109,12 +109,12 @@ export function lexicalEditor(props?: LexicalEditorProps): LexicalRichTextAdapte
       features =
         props.features && typeof props.features === 'function'
           ? props.features({
-              defaultFeatures: cloneDeep(defaultEditorFeatures),
+              defaultFeatures: deepCopyObject(defaultEditorFeatures),
               rootFeatures: rootEditorFeatures,
             })
           : (props.features as FeatureProviderServer<unknown, unknown, unknown>[])
       if (!features) {
-        features = cloneDeep(defaultEditorFeatures)
+        features = deepCopyObject(defaultEditorFeatures)
       }
 
       const lexical: LexicalEditorConfig = props.lexical
@@ -463,8 +463,9 @@ export function lexicalEditor(props?: LexicalEditorProps): LexicalRichTextAdapte
               recurseNodeTree({
                 nodeIDMap: originalNodeWithLocalesIDMap,
                 nodes:
-                  (siblingDocWithLocales[field.name] as SerializedEditorState)?.root?.children ??
-                  [],
+                   
+                  (siblingDocWithLocales[field.name] as unknown as SerializedEditorState)?.root
+                    ?.children ?? [],
               })
             }
 

packages/richtext-lexical/src/lexical/utils/cloneDeep.ts

@@ -1,63 +0,0 @@
-export function cloneDeep<T>(object: T, cache: WeakMap<any, any> = new WeakMap()): T {
-  if (object === null) return null
-
-  if (cache.has(object)) {
-    return cache.get(object)
-  }
-
-  // Handle Date
-  if (object instanceof Date) {
-    return new Date(object.getTime()) as unknown as T
-  }
-
-  // Handle RegExp
-  if (object instanceof RegExp) {
-    return new RegExp(object.source, object.flags) as unknown as T
-  }
-
-  // Handle Map
-  if (object instanceof Map) {
-    const clonedMap = new Map()
-    cache.set(object, clonedMap)
-    for (const [key, value] of object.entries()) {
-      clonedMap.set(key, cloneDeep(value, cache))
-    }
-    return clonedMap as unknown as T
-  }
-
-  // Handle Set
-  if (object instanceof Set) {
-    const clonedSet = new Set()
-    cache.set(object, clonedSet)
-    for (const value of object.values()) {
-      clonedSet.add(cloneDeep(value, cache))
-    }
-    return clonedSet as unknown as T
-  }
-
-  // Handle Array and Object
-  if (typeof object === 'object' && object !== null) {
-    if ('$$typeof' in object && typeof object.$$typeof === 'symbol') {
-      return object
-    }
-
-    const clonedObject: any = Array.isArray(object)
-      ? []
-      : Object.create(Object.getPrototypeOf(object))
-    cache.set(object, clonedObject)
-
-    for (const key in object) {
-      if (
-        Object.prototype.hasOwnProperty.call(object, key) ||
-        Object.getOwnPropertySymbols(object).includes(key as any)
-      ) {
-        clonedObject[key] = cloneDeep(object[key], cache)
-      }
-    }
-
-    return clonedObject as T
-  }
-
-  // Handle all other cases
-  return object
-}

packages/richtext-lexical/src/populateGraphQL/populateLexicalPopulationPromises.ts

@@ -59,6 +59,7 @@ export const populateLexicalPopulationPromises = ({
         }
       }
     },
-    nodes: (siblingDoc[field?.name] as SerializedEditorState)?.root?.children ?? [],
+     
+    nodes: (siblingDoc[field?.name] as unknown as SerializedEditorState)?.root?.children ?? [],
   })
 }

packages/richtext-lexical/src/populateGraphQL/recursivelyPopulateFieldsForGraphQL.ts

@@ -1,4 +1,4 @@
-import type { Field, PayloadRequest, RequestContext } from 'payload'
+import type { Field, JsonObject, PayloadRequest, RequestContext } from 'payload'
 
 import { afterReadTraverseFields } from 'payload'
 
@@ -25,7 +25,7 @@ type NestedRichTextFieldsArgs = {
   populationPromises: Promise<void>[]
   req: PayloadRequest
   showHiddenFields: boolean
-  siblingDoc: Record<string, unknown>
+  siblingDoc: JsonObject
 }
 
 export const recursivelyPopulateFieldsForGraphQL = ({

packages/richtext-lexical/src/utilities/fieldsDrawer/Drawer.tsx

@@ -1,5 +1,5 @@
 'use client'
-import type { Data, FormState } from 'payload'
+import type { Data, FormState, JsonObject } from 'payload'
 
 import { Drawer } from '@payloadcms/ui'
 import React from 'react'
@@ -12,7 +12,7 @@ export type FieldsDrawerProps = {
   drawerSlug: string
   drawerTitle?: string
   featureKey: string
-  handleDrawerSubmit: (fields: FormState, data: Record<string, unknown>) => void
+  handleDrawerSubmit: (fields: FormState, data: JsonObject) => void
   schemaPathSuffix?: string
 }
 

packages/translations/package.json

@@ -19,6 +19,11 @@
       "types": "./src/exports/all.ts",
       "default": "./src/exports/all.ts"
     },
+    "./utilities": {
+      "import": "./src/exports/utilities.ts",
+      "types": "./src/exports/utilities.ts",
+      "default": "./src/exports/utilities.ts"
+    },
     "./languages/*": {
       "import": "./src/languages/*.ts",
       "types": "./src/languages/*.ts",
@@ -61,6 +66,11 @@
         "types": "./dist/exports/all.d.ts",
         "default": "./dist/exports/all.js"
       },
+      "./utilities": {
+        "import": "./dist/exports/utilities.js",
+        "types": "./dist/exports/utilities.d.ts",
+        "default": "./dist/exports/utilities.js"
+      },
       "./languages/*": {
         "import": "./dist/languages/*.js",
         "types": "./dist/languages/*.d.ts",

packages/translations/scripts/translateNewKeys/index.ts

@@ -10,8 +10,7 @@ import type {
   GenericTranslationsObject,
 } from '../../src/types.js'
 
-import { cloneDeep } from '../../src/utilities/cloneDeep.js'
-import { deepMerge } from '../../src/utilities/deepMerge.js'
+import { deepMergeSimple } from '../../src/utilities/deepMergeSimple.js'
 import { acceptedLanguages } from '../../src/utilities/languages.js'
 import { applyEslintFixes } from './applyEslintFixes.js'
 import { findMissingKeys } from './findMissingKeys.js'
@@ -83,7 +82,7 @@ export async function translateObject(props: {
       dateFNSKey: string
       translations: GenericTranslationsObject
     }
-  } = cloneDeep(allTranslationsObject)
+  } = JSON.parse(JSON.stringify(allTranslationsObject))
   const allOnlyNewTranslatedTranslationsObject: GenericLanguages = {}
 
   const translationPromises: Promise<void>[] = []
@@ -160,7 +159,7 @@ export async function translateObject(props: {
           targetObj[keys[keys.length - 1]] = translated
 
           allTranslatedTranslationsObject[targetLang].translations = sortKeys(
-            deepMerge(
+            deepMergeSimple(
               allTranslatedTranslationsObject[targetLang].translations,
               allOnlyNewTranslatedTranslationsObject[targetLang],
             ),

packages/translations/src/exports/utilities.ts

@@ -0,0 +1 @@
+export { deepMergeSimple } from '../utilities/deepMergeSimple.js'

packages/translations/src/utilities/cloneDeep.ts

@@ -1,63 +0,0 @@
-export function cloneDeep<T>(object: T, cache: WeakMap<any, any> = new WeakMap()): T {
-  if (object === null) return null
-
-  if (cache.has(object)) {
-    return cache.get(object)
-  }
-
-  // Handle Date
-  if (object instanceof Date) {
-    return new Date(object.getTime()) as unknown as T
-  }
-
-  // Handle RegExp
-  if (object instanceof RegExp) {
-    return new RegExp(object.source, object.flags) as unknown as T
-  }
-
-  // Handle Map
-  if (object instanceof Map) {
-    const clonedMap = new Map()
-    cache.set(object, clonedMap)
-    for (const [key, value] of object.entries()) {
-      clonedMap.set(key, cloneDeep(value, cache))
-    }
-    return clonedMap as unknown as T
-  }
-
-  // Handle Set
-  if (object instanceof Set) {
-    const clonedSet = new Set()
-    cache.set(object, clonedSet)
-    for (const value of object.values()) {
-      clonedSet.add(cloneDeep(value, cache))
-    }
-    return clonedSet as unknown as T
-  }
-
-  // Handle Array and Object
-  if (typeof object === 'object' && object !== null) {
-    if ('$$typeof' in object && typeof object.$$typeof === 'symbol') {
-      return object
-    }
-
-    const clonedObject: any = Array.isArray(object)
-      ? []
-      : Object.create(Object.getPrototypeOf(object))
-    cache.set(object, clonedObject)
-
-    for (const key in object) {
-      if (
-        Object.prototype.hasOwnProperty.call(object, key) ||
-        Object.getOwnPropertySymbols(object).includes(key as any)
-      ) {
-        clonedObject[key] = cloneDeep(object[key], cache)
-      }
-    }
-
-    return clonedObject as T
-  }
-
-  // Handle all other cases
-  return object
-}

packages/translations/src/utilities/deepMerge.ts

@@ -1,32 +0,0 @@
-/**
- * obj2 has priority over obj1
- *
- * Merges obj2 into obj1. Does not handle arrays
- */
-export function deepMerge(obj1: any, obj2: any, doNotMergeInNulls = true) {
-  const output = { ...obj1 }
-
-  for (const key in obj2) {
-    if (Object.prototype.hasOwnProperty.call(obj2, key)) {
-      if (doNotMergeInNulls) {
-        if (
-          (obj2[key] === null || obj2[key] === undefined) &&
-          obj1[key] !== null &&
-          obj1[key] !== undefined
-        ) {
-          continue
-        }
-      }
-
-      if (typeof obj2[key] === 'object' && obj1[key]) {
-        // Existing behavior for objects
-        output[key] = deepMerge(obj1[key], obj2[key], doNotMergeInNulls)
-      } else {
-        // Direct assignment for values
-        output[key] = obj2[key]
-      }
-    }
-  }
-
-  return output
-}

packages/translations/src/utilities/deepMergeSimple.ts

@@ -0,0 +1,25 @@
+/**
+ * Very simple, but fast deepMerge implementation. Only deepMerges objects, not arrays and clones everything.
+ * Do not use this if your object contains any complex objects like React Components, or if you would like to combine Arrays.
+ * If you only have simple objects and need a fast deepMerge, this is the function for you.
+ *
+ * obj2 takes precedence over obj1 - thus if obj2 has a key that obj1 also has, obj2's value will be used.
+ *
+ * @param obj1 base object
+ * @param obj2 object to merge "into" obj1
+ */
+export function deepMergeSimple<T = object>(obj1: object, obj2: object): T {
+  const output = { ...obj1 }
+
+  for (const key in obj2) {
+    if (Object.prototype.hasOwnProperty.call(obj2, key)) {
+      if (typeof obj2[key] === 'object' && !Array.isArray(obj2[key]) && obj1[key]) {
+        output[key] = deepMergeSimple(obj1[key], obj2[key])
+      } else {
+        output[key] = obj2[key]
+      }
+    }
+  }
+
+  return output as T
+}

packages/translations/src/utilities/init.ts

@@ -8,7 +8,7 @@ import type {
 } from '../types.js'
 
 import { importDateFNSLocale } from '../importDateFNSLocale.js'
-import { deepMerge } from './deepMerge.js'
+import { deepMergeSimple } from './deepMergeSimple.js'
 import { getTranslationsByContext } from './getTranslationsByContext.js'
 
 /**
@@ -143,7 +143,9 @@ export function t<
 
 const initTFunction: InitTFunction = (args) => {
   const { config, language, translations } = args
-  const mergedTranslations = deepMerge(translations, config?.translations?.[language] ?? {})
+  const mergedTranslations = config?.translations?.[language]
+    ? deepMergeSimple<DefaultTranslationsObject>(translations, config?.translations?.[language])
+    : translations
 
   return {
     t: (key, vars) => {

packages/ui/src/elements/withMergedProps/index.tsx

@@ -1,4 +1,4 @@
-import { deepMerge, isReactServerComponentOrFunction, serverProps } from 'payload/shared'
+import { isReactServerComponentOrFunction, serverProps } from 'payload/shared'
 import React from 'react'
 
 /**
@@ -37,7 +37,7 @@ export function withMergedProps<ToMergeIntoProps, CompleteReturnProps>({
   }
   // A wrapper around the args.Component to inject the args.toMergeArgs as props, which are merged with the passed props
   const MergedPropsComponent: React.FC<CompleteReturnProps> = (passedProps) => {
-    const mergedProps = deepMerge(passedProps, toMergeIntoProps)
+    const mergedProps = simpleMergeProps(passedProps, toMergeIntoProps) as CompleteReturnProps
 
     if (sanitizeServerOnlyProps) {
       serverProps.forEach((prop) => {
@@ -50,3 +50,7 @@ export function withMergedProps<ToMergeIntoProps, CompleteReturnProps>({
 
   return MergedPropsComponent
 }
+
+function simpleMergeProps(props, toMerge) {
+  return { ...props, ...toMerge }
+}

packages/ui/src/forms/Form/fieldReducer.ts

@@ -2,7 +2,7 @@ import type { FormField, FormState, Row } from 'payload'
 
 import ObjectIdImport from 'bson-objectid'
 import { dequal } from 'dequal/lite' // lite: no need for Map and Set support
-import { deepCopyObject } from 'payload/shared'
+import { deepCopyObject, deepCopyObjectSimple } from 'payload/shared'
 
 import type { FieldAction } from './types.js'
 
@@ -249,11 +249,14 @@ export function fieldReducer(state: FormState, action: FieldAction): FormState {
       const { remainingFields, rows } = separateRows(path, state)
       const rowsMetadata = [...(state[path].rows || [])]
 
-      const duplicateRowMetadata = deepCopyObject(rowsMetadata[rowIndex])
+      const duplicateRowMetadata = deepCopyObjectSimple(rowsMetadata[rowIndex])
       if (duplicateRowMetadata.id) duplicateRowMetadata.id = new ObjectId().toHexString()
 
       const duplicateRowState = deepCopyObject(rows[rowIndex])
-      if (duplicateRowState.id) duplicateRowState.id = new ObjectId().toHexString()
+      if (duplicateRowState.id) {
+        duplicateRowState.id.value = new ObjectId().toHexString()
+        duplicateRowState.id.initialValue = new ObjectId().toHexString()
+      }
 
       // If there are subfields
       if (Object.keys(duplicateRowState).length > 0) {

pnpm-lock.yaml

@@ -258,9 +258,6 @@ importers:
       bson-objectid:
         specifier: 2.0.4
         version: 2.0.4
-      deepmerge:
-        specifier: 4.3.1
-        version: 4.3.1
       http-status:
         specifier: 1.6.2
         version: 1.6.2
@@ -868,9 +865,6 @@ importers:
       '@payloadcms/ui':
         specifier: workspace:*
         version: link:../ui
-      deepmerge:
-        specifier: ^4.2.2
-        version: 4.3.1
       escape-html:
         specifier: ^1.0.3
         version: 1.0.3
@@ -951,9 +945,6 @@ importers:
       '@payloadcms/ui':
         specifier: workspace:*
         version: link:../ui
-      deepmerge:
-        specifier: 4.3.1
-        version: 4.3.1
       react:
         specifier: ^19.0.0-rc-6230622a1a-20240610
         version: 19.0.0-rc-fb9a90fa48-20240614

test/auth/int.spec.ts

@@ -489,7 +489,7 @@ describe('Auth', () => {
           expect(lockedUser.docs[0].loginAttempts).toBe(2)
           expect(lockedUser.docs[0].lockUntil).toBeDefined()
 
-          const manuallyReleaseLock = new Date(Date.now() - 605 * 1000)
+          const manuallyReleaseLock = new Date(Date.now() - 605 * 1000).toISOString()
           const userLockElapsed = await payload.update({
             collection: slug,
             data: {
@@ -503,7 +503,7 @@ describe('Auth', () => {
             },
           })
 
-          expect(userLockElapsed.docs[0].lockUntil).toEqual(manuallyReleaseLock.toISOString())
+          expect(userLockElapsed.docs[0].lockUntil).toEqual(manuallyReleaseLock)
 
           // login
           await restClient.POST(`/${slug}/login`, {

test/localization/int.spec.ts

@@ -286,7 +286,7 @@ describe('Localization', () => {
         const post = await payload.create({
           collection: localizedSortSlug,
           data: {
-            date: new Date(),
+            date: new Date().toISOString(),
             title: `EN ${i}`,
           },
           locale: englishLocale,
@@ -296,7 +296,7 @@ describe('Localization', () => {
           id: post.id,
           collection: localizedSortSlug,
           data: {
-            date: new Date(),
+            date: new Date().toISOString(),
             title: `ES ${i}`,
           },
           locale: spanishLocale,