diff --git a/packages/richtext-lexical/src/features/blocks/client/component/BlockContent.tsx b/packages/richtext-lexical/src/features/blocks/client/component/BlockContent.tsx
index 4f30ff283c3..a06faa0b3cf 100644
--- a/packages/richtext-lexical/src/features/blocks/client/component/BlockContent.tsx
+++ b/packages/richtext-lexical/src/features/blocks/client/component/BlockContent.tsx
@@ -44,13 +44,13 @@ type Props = {
 // Inside of fields.data however, that sub-blocks blockName property does not exist at all.
 function removeUndefinedAndNullAndEmptyArraysRecursively(obj: object) {
   for (const key in obj) {
-    const value = obj[key]
+    const value = obj[key as keyof object] as unknown
     if (Array.isArray(value) && !value?.length) {
-      delete obj[key]
+      delete obj[key as keyof object]
     } else if (value && typeof value === 'object') {
       removeUndefinedAndNullAndEmptyArraysRecursively(value)
     } else if (value === undefined || value === null) {
-      delete obj[key]
+      delete obj[key as keyof object]
     }
   }
 }
diff --git a/packages/richtext-lexical/src/features/blocks/client/component/index.tsx b/packages/richtext-lexical/src/features/blocks/client/component/index.tsx
index 4a230a2d5d3..c9752fc50a4 100644
--- a/packages/richtext-lexical/src/features/blocks/client/component/index.tsx
+++ b/packages/richtext-lexical/src/features/blocks/client/component/index.tsx
@@ -108,7 +108,7 @@ export const BlockComponent: React.FC<Props> = (props) => {
   ])
 
   const onChange = useCallback(
-    async ({ formState: prevFormState }) => {
+    async ({ formState: prevFormState }: { formState: FormState }) => {
       abortAndIgnore(onChangeAbortControllerRef.current)
 
       const controller = new AbortController()
diff --git a/packages/richtext-lexical/src/features/blocks/client/index.tsx b/packages/richtext-lexical/src/features/blocks/client/index.tsx
index 41289e04c05..c229fef99bb 100644
--- a/packages/richtext-lexical/src/features/blocks/client/index.tsx
+++ b/packages/richtext-lexical/src/features/blocks/client/index.tsx
@@ -1,5 +1,6 @@
 'use client'
 
+import type { I18nClient } from '@payloadcms/translations'
 import type { BlocksFieldClient } from 'payload'
 
 import { getTranslation } from '@payloadcms/translations'
@@ -67,7 +68,7 @@ export const BlocksFeatureClient = createClientFeature<BlocksFeatureClientProps>
               } as SlashMenuItem
             }),
             key: 'blocks',
-            label: ({ i18n }) => {
+            label: ({ i18n }: { i18n: I18nClient<object, 'lexical:blocks:label'> }) => {
               return i18n.t('lexical:blocks:label')
             },
           }
@@ -106,7 +107,11 @@ export const BlocksFeatureClient = createClientFeature<BlocksFeatureClientProps>
               } as SlashMenuItem
             }),
             key: 'inlineBlocks',
-            label: ({ i18n }) => {
+            label: ({
+              i18n,
+            }: {
+              i18n: I18nClient<object, 'lexical:blocks:inlineBlocks:label'>
+            }) => {
               return i18n.t('lexical:blocks:inlineBlocks:label')
             },
           }
diff --git a/packages/richtext-lexical/src/features/experimental_table/client/utils/debounce.ts b/packages/richtext-lexical/src/features/experimental_table/client/utils/debounce.ts
index 11b3d99ae2a..7a17717832e 100644
--- a/packages/richtext-lexical/src/features/experimental_table/client/utils/debounce.ts
+++ b/packages/richtext-lexical/src/features/experimental_table/client/utils/debounce.ts
@@ -1,3 +1,5 @@
+// eslint-disable-next-line @typescript-eslint/ban-ts-comment
+// @ts-nocheck - not worth it migrate jsdoc to tsdoc
 'use client'
 // Copied & modified from https://github.com/lodash/lodash/blob/main/src/debounce.ts
 /*
@@ -242,4 +244,5 @@ function debounce(func, wait, options) {
   return debounced
 }
 
+// eslint-disable-next-line no-restricted-exports
 export default debounce
diff --git a/packages/richtext-lexical/src/features/relationship/client/components/RelationshipComponent.tsx b/packages/richtext-lexical/src/features/relationship/client/components/RelationshipComponent.tsx
index 3dd9ea6f4bd..ba9931df0b3 100644
--- a/packages/richtext-lexical/src/features/relationship/client/components/RelationshipComponent.tsx
+++ b/packages/richtext-lexical/src/features/relationship/client/components/RelationshipComponent.tsx
@@ -87,18 +87,15 @@ const Component: React.FC<Props> = (props) => {
     })
   }, [editor, nodeKey])
 
-  const updateRelationship = React.useCallback(
-    ({ doc }) => {
-      setParams({
-        ...initialParams,
-        cacheBust, // do this to get the usePayloadAPI to re-fetch the data even though the URL string hasn't changed
-      })
-
-      closeDocumentDrawer()
-      dispatchCacheBust()
-    },
-    [cacheBust, setParams, closeDocumentDrawer],
-  )
+  const updateRelationship = React.useCallback(() => {
+    setParams({
+      ...initialParams,
+      cacheBust, // do this to get the usePayloadAPI to re-fetch the data even though the URL string hasn't changed
+    })
+
+    closeDocumentDrawer()
+    dispatchCacheBust()
+  }, [cacheBust, setParams, closeDocumentDrawer])
 
   const $onDelete = useCallback(
     (payload: KeyboardEvent) => {
diff --git a/packages/richtext-lexical/src/features/relationship/client/drawer/index.tsx b/packages/richtext-lexical/src/features/relationship/client/drawer/index.tsx
index 2b6eae7cba1..97eecee120d 100644
--- a/packages/richtext-lexical/src/features/relationship/client/drawer/index.tsx
+++ b/packages/richtext-lexical/src/features/relationship/client/drawer/index.tsx
@@ -68,7 +68,7 @@ const RelationshipDrawerComponent: React.FC<Props> = ({ enabledCollectionSlugs }
   }, [editor, openListDrawer])
 
   const onSelect = useCallback(
-    ({ collectionSlug, docID }) => {
+    ({ collectionSlug, docID }: { collectionSlug: string; docID: number | string }) => {
       insertRelationship({
         editor,
         relationTo: collectionSlug,
diff --git a/packages/richtext-lexical/src/features/toolbars/inline/client/Toolbar/index.tsx b/packages/richtext-lexical/src/features/toolbars/inline/client/Toolbar/index.tsx
index 29864d71321..e5194e57f53 100644
--- a/packages/richtext-lexical/src/features/toolbars/inline/client/Toolbar/index.tsx
+++ b/packages/richtext-lexical/src/features/toolbars/inline/client/Toolbar/index.tsx
@@ -209,7 +209,7 @@ function InlineToolbar({
     const isLinkEditorVisible =
       possibleLinkEditor !== null &&
       'style' in possibleLinkEditor &&
-      possibleLinkEditor?.style?.['opacity'] === '1'
+      possibleLinkEditor?.style?.['opacity' as keyof typeof possibleLinkEditor.style] === '1'
 
     const rootElement = editor.getRootElement()
     if (
diff --git a/packages/richtext-lexical/src/features/upload/client/component/index.tsx b/packages/richtext-lexical/src/features/upload/client/component/index.tsx
index 1dee1113384..d8e5bba81d2 100644
--- a/packages/richtext-lexical/src/features/upload/client/component/index.tsx
+++ b/packages/richtext-lexical/src/features/upload/client/component/index.tsx
@@ -1,5 +1,5 @@
 'use client'
-import type { ClientCollectionConfig, Data } from 'payload'
+import type { ClientCollectionConfig, Data, FormState, JsonObject } from 'payload'
 
 import { useLexicalComposerContext } from '@lexical/react/LexicalComposerContext.js'
 import { useLexicalNodeSelection } from '@lexical/react/useLexicalNodeSelection.js'
@@ -183,7 +183,7 @@ const Component: React.FC<ElementProps> = (props) => {
   ).collections?.[relatedCollection.slug]?.hasExtraFields
 
   const onExtraFieldsDrawerSubmit = useCallback(
-    (_, data) => {
+    (_: FormState, data: JsonObject) => {
       // Update lexical node (with key nodeKey) with new data
       editor.update(() => {
         const uploadNode: null | UploadNode = $getNodeByKey(nodeKey)
diff --git a/packages/richtext-lexical/src/features/upload/client/drawer/index.tsx b/packages/richtext-lexical/src/features/upload/client/drawer/index.tsx
index fccd620ac96..90f7c0fbb36 100644
--- a/packages/richtext-lexical/src/features/upload/client/drawer/index.tsx
+++ b/packages/richtext-lexical/src/features/upload/client/drawer/index.tsx
@@ -77,7 +77,7 @@ const UploadDrawerComponent: React.FC<Props> = ({ enabledCollectionSlugs }) => {
   }, [editor, openListDrawer])
 
   const onSelect = useCallback(
-    ({ collectionSlug, docID }) => {
+    ({ collectionSlug, docID }: { collectionSlug: string; docID: number | string }) => {
       closeListDrawer()
       insertUpload({
         editor,
diff --git a/packages/richtext-lexical/src/field/Field.tsx b/packages/richtext-lexical/src/field/Field.tsx
index 87b221a83e1..bba63aa4f52 100644
--- a/packages/richtext-lexical/src/field/Field.tsx
+++ b/packages/richtext-lexical/src/field/Field.tsx
@@ -1,5 +1,6 @@
 'use client'
 import type { SerializedEditorState } from 'lexical'
+import type { Validate } from 'payload'
 
 import { FieldLabel, useEditDepth, useField, withCondition } from '@payloadcms/ui'
 import React, { useCallback } from 'react'
@@ -9,9 +10,9 @@ import type { SanitizedClientEditorConfig } from '../lexical/config/types.js'
 import type { LexicalRichTextFieldProps } from '../types.js'
 
 import { LexicalProvider } from '../lexical/LexicalProvider.js'
+import '../lexical/theme/EditorTheme.scss'
 import './bundled.css'
 import './index.scss'
-import '../lexical/theme/EditorTheme.scss'
 
 const baseClass = 'rich-text-lexical'
 
@@ -39,11 +40,13 @@ const RichTextComponent: React.FC<
 
   const editDepth = useEditDepth()
 
-  const memoizedValidate = useCallback(
+  const memoizedValidate = useCallback<Validate>(
     (value, validationOptions) => {
       if (typeof validate === 'function') {
+        // @ts-expect-error - vestiges of when tsconfig was not strict. Feel free to improve
         return validate(value, { ...validationOptions, props, required })
       }
+      return true
     },
     // Important: do not add props to the dependencies array.
     // This would cause an infinite loop and endless re-rendering.
@@ -61,7 +64,6 @@ const RichTextComponent: React.FC<
     value,
   } = useField<SerializedEditorState>({
     path,
-    // @ts-expect-error: TODO: Fix this
     validate: memoizedValidate,
   })
 
@@ -122,7 +124,7 @@ const RichTextComponent: React.FC<
   )
 }
 
-function fallbackRender({ error }): React.ReactElement {
+function fallbackRender({ error }: { error: Error }) {
   // Call resetErrorBoundary() to reset the error boundary and retry the render.
 
   return (
diff --git a/packages/richtext-lexical/src/index.ts b/packages/richtext-lexical/src/index.ts
index f4004cf7c6e..4019469d6fb 100644
--- a/packages/richtext-lexical/src/index.ts
+++ b/packages/richtext-lexical/src/index.ts
@@ -67,7 +67,7 @@ export function lexicalEditor(props?: LexicalEditorProps): LexicalRichTextAdapte
       })
     }
 
-    let features: FeatureProviderServer<any, any, any>[] = []
+    let features: FeatureProviderServer<unknown, unknown, unknown>[] = []
     let resolvedFeatureMap: ResolvedServerFeatureMap
 
     let finalSanitizedEditorConfig: SanitizedServerEditorConfig // For server only
@@ -123,12 +123,12 @@ export function lexicalEditor(props?: LexicalEditorProps): LexicalRichTextAdapte
 
     const featureI18n = finalSanitizedEditorConfig.features.i18n
     for (const lang in i18n) {
-      if (!featureI18n[lang]) {
-        featureI18n[lang] = {
+      if (!featureI18n[lang as keyof typeof featureI18n]) {
+        featureI18n[lang as keyof typeof featureI18n] = {
           lexical: {},
         }
       }
-
+      // @ts-expect-error - vestiges of when tsconfig was not strict. Feel free to improve
       featureI18n[lang].lexical.general = i18n[lang]
     }
 
@@ -206,6 +206,8 @@ export function lexicalEditor(props?: LexicalEditorProps): LexicalRichTextAdapte
             ) {
               return value
             }
+            // TO-DO: We should not use context, as it is intended for external use only
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any
             const context: any = _context
             const nodeIDMap: {
               [key: string]: SerializedLexicalNode
@@ -438,6 +440,8 @@ export function lexicalEditor(props?: LexicalEditorProps): LexicalRichTextAdapte
               return value
             }
 
+            // TO-DO: We should not use context, as it is intended for external use only
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any
             const context: any = _context
             const nodeIDMap: {
               [key: string]: SerializedLexicalNode
diff --git a/packages/richtext-lexical/src/lexical/LexicalProvider.tsx b/packages/richtext-lexical/src/lexical/LexicalProvider.tsx
index 0287d913c9f..ed60fd77be8 100644
--- a/packages/richtext-lexical/src/lexical/LexicalProvider.tsx
+++ b/packages/richtext-lexical/src/lexical/LexicalProvider.tsx
@@ -26,7 +26,14 @@ export type LexicalProviderProps = {
   value: SerializedEditorState
 }
 
-const NestProviders = ({ children, providers }) => {
+const NestProviders = ({
+  children,
+  providers,
+}: {
+  children: React.ReactNode
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  providers: any[]
+}) => {
   if (!providers?.length) {
     return children
   }
diff --git a/packages/richtext-lexical/src/lexical/config/server/sanitize.ts b/packages/richtext-lexical/src/lexical/config/server/sanitize.ts
index 7c035ce6701..3fc90029abc 100644
--- a/packages/richtext-lexical/src/lexical/config/server/sanitize.ts
+++ b/packages/richtext-lexical/src/lexical/config/server/sanitize.ts
@@ -69,11 +69,12 @@ export const sanitizeServerFeatures = (
 
     if (feature?.i18n) {
       for (const lang in feature.i18n) {
-        if (!sanitized.i18n[lang]) {
-          sanitized.i18n[lang] = {
+        if (!sanitized.i18n[lang as keyof typeof sanitized.i18n]) {
+          sanitized.i18n[lang as keyof typeof sanitized.i18n] = {
             lexical: {},
           }
         }
+        // @ts-expect-error - vestiges of when tsconfig was not strict. Feel free to improve
         sanitized.i18n[lang].lexical[feature.key] = feature.i18n[lang]
       }
     }
diff --git a/packages/richtext-lexical/src/lexical/plugins/handles/AddBlockHandlePlugin/index.tsx b/packages/richtext-lexical/src/lexical/plugins/handles/AddBlockHandlePlugin/index.tsx
index 8017c24a18f..84c830291da 100644
--- a/packages/richtext-lexical/src/lexical/plugins/handles/AddBlockHandlePlugin/index.tsx
+++ b/packages/richtext-lexical/src/lexical/plugins/handles/AddBlockHandlePlugin/index.tsx
@@ -126,7 +126,7 @@ function useAddBlockHandle(
   }, [anchorElem, hoveredElement, blockHandleHorizontalOffset])
 
   const handleAddClick = useCallback(
-    (event) => {
+    (event: React.MouseEvent<HTMLButtonElement, MouseEvent>) => {
       let hoveredElementToUse = hoveredElement
       if (!hoveredElementToUse?.node) {
         return
@@ -189,6 +189,7 @@ function useAddBlockHandle(
   return createPortal(
     <React.Fragment>
       <button
+        aria-label="Add block"
         className="icon add-block-menu"
         onClick={(event) => {
           handleAddClick(event)
diff --git a/packages/richtext-lexical/src/lexical/plugins/handles/DraggableBlockPlugin/debounce.ts b/packages/richtext-lexical/src/lexical/plugins/handles/DraggableBlockPlugin/debounce.ts
index 13ff4f6c275..99989e70036 100644
--- a/packages/richtext-lexical/src/lexical/plugins/handles/DraggableBlockPlugin/debounce.ts
+++ b/packages/richtext-lexical/src/lexical/plugins/handles/DraggableBlockPlugin/debounce.ts
@@ -1,10 +1,10 @@
 'use client'
-export function debounce(func: (...args: any[]) => void, wait: number) {
-  let timeout
-  return function (...args: any[]) {
+export function debounce(func: (...args: undefined[]) => void, wait: number) {
+  let timeout: number | string | undefined
+  return function (...args: undefined[]) {
     const later = () => {
       clearTimeout(timeout)
-      timeout = null
+      timeout = undefined
       func(...args)
     }
 
diff --git a/packages/richtext-lexical/src/utilities/fieldsDrawer/DrawerContent.tsx b/packages/richtext-lexical/src/utilities/fieldsDrawer/DrawerContent.tsx
index 9714ce33d80..e8e9caedc8d 100644
--- a/packages/richtext-lexical/src/utilities/fieldsDrawer/DrawerContent.tsx
+++ b/packages/richtext-lexical/src/utilities/fieldsDrawer/DrawerContent.tsx
@@ -82,7 +82,7 @@ export const DrawerContent: React.FC<Omit<FieldsDrawerProps, 'drawerSlug' | 'dra
   ])
 
   const onChange = useCallback(
-    async ({ formState: prevFormState }) => {
+    async ({ formState: prevFormState }: { formState: FormState }) => {
       abortAndIgnore(onChangeAbortControllerRef.current)
 
       const controller = new AbortController()
diff --git a/packages/richtext-lexical/src/utilities/generateImportMap.tsx b/packages/richtext-lexical/src/utilities/generateImportMap.tsx
index bf8c874ee7f..f1857a720ce 100644
--- a/packages/richtext-lexical/src/utilities/generateImportMap.tsx
+++ b/packages/richtext-lexical/src/utilities/generateImportMap.tsx
@@ -6,6 +6,7 @@ import type { ResolvedServerFeatureMap } from '../features/typesServer.js'
 
 export const getGenerateImportMap =
   (args: { resolvedFeatureMap: ResolvedServerFeatureMap }): RichTextAdapter['generateImportMap'] =>
+  // @ts-expect-error - vestiges of when tsconfig was not strict. Feel free to improve
   ({ addToImportMap, baseDir, config, importMap, imports }) => {
     addToImportMap('@payloadcms/richtext-lexical/rsc#RscEntryLexicalCell')
     addToImportMap('@payloadcms/richtext-lexical/rsc#RscEntryLexicalField')
@@ -22,6 +23,7 @@ export const getGenerateImportMap =
             imports,
           })
         } else if (resolvedFeature.componentImports?.length) {
+          // @ts-expect-error - vestiges of when tsconfig was not strict. Feel free to improve
           resolvedFeature.componentImports.forEach((component) => {
             addToImportMap(component)
           })
diff --git a/packages/richtext-lexical/src/utilities/migrateSlateToLexical/index.ts b/packages/richtext-lexical/src/utilities/migrateSlateToLexical/index.ts
index 7c22660e684..5440efa28e8 100644
--- a/packages/richtext-lexical/src/utilities/migrateSlateToLexical/index.ts
+++ b/packages/richtext-lexical/src/utilities/migrateSlateToLexical/index.ts
@@ -1,3 +1,4 @@
+/* eslint-disable no-console */
 import type { CollectionConfig, Field, GlobalConfig, Payload } from 'payload'
 
 import { migrateDocumentFieldsRecursively } from './migrateDocumentFieldsRecursively.js'
@@ -15,7 +16,7 @@ import { migrateDocumentFieldsRecursively } from './migrateDocumentFieldsRecursi
 export async function migrateSlateToLexical({ payload }: { payload: Payload }) {
   const collections = payload.config.collections
 
-  const errors = []
+  const errors: unknown[] = []
 
   const allLocales = payload.config.localization ? payload.config.localization.localeCodes : [null]
 
@@ -56,7 +57,7 @@ async function migrateGlobal({
   locale,
   payload,
 }: {
-  errors: any[]
+  errors: unknown[]
   global: GlobalConfig
   locale: null | string
   payload: Payload
@@ -105,7 +106,7 @@ async function migrateCollection({
 }: {
   collection: CollectionConfig
   cur: number
-  errors: any[]
+  errors: unknown[]
   locale: null | string
   max: number
   payload: Payload
diff --git a/packages/richtext-lexical/src/validate/index.ts b/packages/richtext-lexical/src/validate/index.ts
index fcfd214579a..adff507d7de 100644
--- a/packages/richtext-lexical/src/validate/index.ts
+++ b/packages/richtext-lexical/src/validate/index.ts
@@ -1,4 +1,4 @@
-import type { SerializedEditorState, SerializedParagraphNode } from 'lexical'
+import type { SerializedEditorState, SerializedParagraphNode, SerializedTextNode } from 'lexical'
 import type { RichTextField, Validate } from 'payload'
 
 import type { SanitizedServerEditorConfig } from '../lexical/config/types.js'
@@ -32,7 +32,7 @@ export const richTextValidateHOC = ({
           } else if (paragraphNode?.children?.length === 1) {
             const paragraphNodeChild = paragraphNode?.children[0]
             if (paragraphNodeChild.type === 'text') {
-              if (!paragraphNodeChild?.['text']?.length) {
+              if (!(paragraphNodeChild as SerializedTextNode | undefined)?.['text']?.length) {
                 hasOnlyEmptyParagraph = true
               }
             }
diff --git a/packages/richtext-lexical/tsconfig.json b/packages/richtext-lexical/tsconfig.json
index 79ab3f11ad0..5ab60ad61c4 100644
--- a/packages/richtext-lexical/tsconfig.json
+++ b/packages/richtext-lexical/tsconfig.json
@@ -6,6 +6,7 @@
     "emitDeclarationOnly": true,
     "esModuleInterop": true,
     "strictNullChecks": true,
+    "noImplicitAny": true,
     "outDir": "./dist" /* Specify an output folder for all emitted files. */,
     "rootDir": "./src" /* Specify the root folder within your source files. */,
   },