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

import React from 'react';
import objType from './objType';
import JSONObjectNode from './JSONObjectNode';
import JSONArrayNode from './JSONArrayNode';
import JSONIterableNode from './JSONIterableNode';
import JSONValueNode from './JSONValueNode';
import type { CommonInternalProps } from './types';

interface Props extends CommonInternalProps {
  value: unknown;
}

export default function JSONNode({
  getItemString,
  keyPath,
  labelRenderer,
  styling,
  value,
  valueRenderer,
  isCustomNode,
  ...rest
}: Props) {
  const nodeType = isCustomNode(value) ? 'Custom' : objType(value);

  const simpleNodeProps = {
    getItemString,
    key: keyPath[0],
    keyPath,
    labelRenderer,
    nodeType,
    styling,
    value,
    valueRenderer,
  };

  const nestedNodeProps = {
    ...rest,
    ...simpleNodeProps,
    data: value,
    isCustomNode,
  };

  switch (nodeType) {
    case 'Object':
    case 'Error':
    case 'WeakMap':
    case 'WeakSet':
      return <JSONObjectNode {...nestedNodeProps} />;
    case 'Array':
      return <JSONArrayNode {...nestedNodeProps} />;
    case 'Iterable':
    case 'Map':
    case 'Set':
      return <JSONIterableNode {...nestedNodeProps} />;
    case 'String':
      return (
        <JSONValueNode
          {...simpleNodeProps}
          valueGetter={(raw: string) => `"${raw}"`}
        />
      );
    case 'Number':
      return <JSONValueNode {...simpleNodeProps} />;
    case 'Boolean':
      return (
        <JSONValueNode
          {...simpleNodeProps}
          valueGetter={(raw) => (raw ? 'true' : 'false')}
        />
      );
    case 'Date':
      return (
        <JSONValueNode
          {...simpleNodeProps}
          valueGetter={(raw) => raw.toISOString()}
        />
      );
    case 'Null':
      return <JSONValueNode {...simpleNodeProps} valueGetter={() => 'null'} />;
    case 'Undefined':
      return (
        <JSONValueNode {...simpleNodeProps} valueGetter={() => 'undefined'} />
      );
    case 'Function':
    case 'Symbol':
      return (
        <JSONValueNode
          {...simpleNodeProps}
          valueGetter={(raw) => raw.toString()}
        />
      );
    case 'Custom':
      return <JSONValueNode {...simpleNodeProps} />;
    default:
      return (
        <JSONValueNode
          {...simpleNodeProps}
          valueGetter={() => `<${nodeType}>`}
        />
      );
  }
}