Tighten types

packages/react-json-tree/src/ItemRange.tsx

@@ -3,7 +3,7 @@ import JSONArrow from './JSONArrow';
 import type { CircularCache, CommonInternalProps } from './types';
 
 interface Props extends CommonInternalProps {
-  data: any;
+  data: unknown;
   nodeType: string;
   from: number;
   to: number;

packages/react-json-tree/src/JSONArrayNode.tsx

@@ -4,14 +4,14 @@ import type { CommonInternalProps } from './types';
 
 // Returns the "n Items" string for this node,
 // generating and caching it if it hasn't been created yet.
-function createItemString(data: any) {
+function createItemString(data: unknown) {
   return `${(data as unknown[]).length} ${
     (data as unknown[]).length !== 1 ? 'items' : 'item'
   }`;
 }
 
 interface Props extends CommonInternalProps {
-  data: any;
+  data: unknown;
   nodeType: string;
 }
 
@@ -24,7 +24,7 @@ export default function JSONArrayNode({ data, ...props }: Props) {
       nodeType="Array"
       nodeTypeIndicator="[]"
       createItemString={createItemString}
-      expandable={data.length > 0}
+      expandable={(data as unknown[]).length > 0}
     />
   );
 }

packages/react-json-tree/src/JSONIterableNode.tsx

@@ -23,7 +23,7 @@ function createItemString(data: any, limit: number) {
 }
 
 interface Props extends CommonInternalProps {
-  data: any;
+  data: unknown;
   nodeType: string;
 }
 

packages/react-json-tree/src/JSONNestedNode.tsx

@@ -10,7 +10,7 @@ import type { CircularCache, CommonInternalProps } from './types';
  */
 
 export interface RenderChildNodesProps extends CommonInternalProps {
-  data: any;
+  data: unknown;
   nodeType: string;
   circularCache: CircularCache;
   level: number;
@@ -23,7 +23,7 @@ interface Range {
 
 interface Entry {
   key: string | number;
-  value: any;
+  value: unknown;
 }
 
 function isRange(rangeOrEntry: Range | Entry): rangeOrEntry is Range {
@@ -87,10 +87,10 @@ function renderChildNodes(
 }
 
 interface Props extends CommonInternalProps {
-  data: any;
+  data: unknown;
   nodeType: string;
   nodeTypeIndicator: string;
-  createItemString: (data: any, collectionLimit: number) => string;
+  createItemString: (data: unknown, collectionLimit: number) => string;
   expandable: boolean;
 }
 

packages/react-json-tree/src/JSONNode.tsx

@@ -7,7 +7,7 @@ import JSONValueNode from './JSONValueNode';
 import type { CommonInternalProps } from './types';
 
 interface Props extends CommonInternalProps {
-  value: any;
+  value: unknown;
 }
 
 export default function JSONNode({

packages/react-json-tree/src/JSONObjectNode.tsx

@@ -4,13 +4,13 @@ import type { CommonInternalProps } from './types';
 
 // Returns the "n Items" string for this node,
 // generating and caching it if it hasn't been created yet.
-function createItemString(data: any) {
+function createItemString(data: unknown) {
   const len = Object.getOwnPropertyNames(data).length;
   return `${len} ${len !== 1 ? 'keys' : 'key'}`;
 }
 
 interface Props extends CommonInternalProps {
-  data: any;
+  data: unknown;
   nodeType: string;
 }
 

packages/react-json-tree/src/JSONValueNode.tsx

@@ -19,9 +19,9 @@ interface Props {
   labelRenderer: LabelRenderer;
   nodeType: string;
   styling: Styling;
-  value: any;
+  value: unknown;
   valueRenderer: ValueRenderer;
-  valueGetter?: (value: any) => any;
+  valueGetter?: (value: any) => unknown;
 }
 
 export default function JSONValueNode({

packages/react-json-tree/src/getCollectionEntries.ts

@@ -1,6 +1,6 @@
 import type { SortObjectKeys } from './types';
 
-function getLength(type: string, collection: any) {
+function getLength(type: string, collection: unknown) {
   if (type === 'Object') {
     // eslint-disable-next-line @typescript-eslint/ban-types
     return Object.keys(collection as {}).length;
@@ -11,8 +11,8 @@ function getLength(type: string, collection: any) {
   return Infinity;
 }
 
-function isIterableMap(collection: any) {
-  return typeof (collection as Map<any, any>).set === 'function';
+function isIterableMap(collection: unknown) {
+  return typeof (collection as Map<unknown, unknown>).set === 'function';
 }
 
 function getEntries(
@@ -21,7 +21,7 @@ function getEntries(
   sortObjectKeys: SortObjectKeys,
   from = 0,
   to = Infinity
-): { entries: { key: string | number; value: any }[]; hasMore?: boolean } {
+): { entries: { key: string | number; value: unknown }[]; hasMore?: boolean } {
   let res;
 
   if (type === 'Object') {
@@ -97,7 +97,7 @@ function getRanges(from: number, to: number, limit: number) {
 
 export default function getCollectionEntries(
   type: string,
-  collection: any,
+  collection: unknown,
   sortObjectKeys: SortObjectKeys,
   limit: number,
   from = 0,

packages/react-json-tree/src/index.tsx

@@ -17,7 +17,7 @@ import type {
 } from './types';
 
 interface Props extends Partial<CommonExternalProps> {
-  data: any;
+  data: unknown;
   theme?: Theme;
   invertTheme?: boolean;
 }

packages/react-json-tree/src/types.ts

@@ -3,11 +3,11 @@ import { StylingFunction } from 'react-base16-styling';
 
 export type Key = string | number;
 
-export type KeyPath = (string | number)[];
+export type KeyPath = readonly (string | number)[];
 
 export type GetItemString = (
   nodeType: string,
-  data: any,
+  data: unknown,
   itemType: React.ReactNode,
   itemString: string,
   keyPath: KeyPath
@@ -21,26 +21,26 @@ export type LabelRenderer = (
 ) => React.ReactNode;
 
 export type ValueRenderer = (
-  valueAsString: any,
-  value: any,
+  valueAsString: unknown,
+  value: unknown,
   ...keyPath: KeyPath
 ) => React.ReactNode;
 
 export type ShouldExpandNodeInitially = (
   keyPath: KeyPath,
-  data: any,
+  data: unknown,
   level: number
 ) => boolean;
 
-export type PostprocessValue = (value: any) => any;
+export type PostprocessValue = (value: unknown) => unknown;
 
-export type IsCustomNode = (value: any) => boolean;
+export type IsCustomNode = (value: unknown) => boolean;
 
-export type SortObjectKeys = ((a: any, b: any) => number) | boolean;
+export type SortObjectKeys = ((a: unknown, b: unknown) => number) | boolean;
 
 export type Styling = StylingFunction;
 
-export type CircularCache = any[];
+export type CircularCache = unknown[];
 
 export interface CommonExternalProps {
   keyPath: KeyPath;