Type support

Exact behavior for JavaScript value categories.

Compatibility matrix

JavaScript value	Display and expansion	Current boundary
string, boolean, null, undefined	Terminal primitive	Strings are truncated for display by `stringLimit`.
number, bigint, symbol	Terminal primitive; preserves `-0`, `NaN`, infinities, and bigint suffix	Symbol descriptions are labels, not identity.
function	Terminal `ƒ name()` summary	Never called; own properties are not expanded.
plain object and class instance	Enumerable own string and symbol properties	Prototype chain is not shown. Non-enumerables are opt-in.
Array	Indexed children, including explicit empty rows for holes	Non-index properties are excluded.
Date, RegExp, URL	Terminal intrinsic summary	Invalid Date is explicit; no object properties.
Error subclasses	Expandable own error details	Includes non-enumerable own error properties.
Map	Key and value rows by iteration position	Stops after 10,000 entries; insertion changes paths.
Set	Value rows by iteration position	Stops after 10,000 entries; insertion changes paths.
typed arrays	Indexed element rows	Extra properties are excluded.
DataView, ArrayBuffer	Indexed byte rows	Byte paths are rich custom segments.
SharedArrayBuffer	Opaque summary	Bytes are not read.
WeakMap, WeakSet, Promise	Opaque summary	Contents or state cannot be inspected.
Recognized HTML elements, Text, Document, React element	Opaque recognized summary	SVG, Comment and DocumentFragment fall back to own-property inspection.
getter/setter property	Terminal descriptor marker	Getter is not invoked.
circular/shared object	Terminal reference with target path	Target is scoped to current lazy discovery.
custom registered type	Summary and optional paged children	Application callbacks execute and own their safety.
unrecognized object	Enumerable own properties	Proxy reflection may execute traps or fail.

Try representative values

import { DataInspector } from '@nipe-solutions/react-data-inspector'

const value = {
  bytes: new Uint8Array([1, 2, 3]),
  map: new Map([[{ id: 1 }, 'value']]),
  weak: new WeakMap<object, string>(),
  special: [-0, NaN, 42n, undefined],
}
export function Matrix() {
  return <DataInspector value={value} defaultExpandedDepth={2} />
}

Depth, string, grouping, search, copy, and visible-row limits apply independently of type support. An inspection failure renders a diagnostic and can be reported through inspectionOptions.onInspectionError.

Try it in the playground API reference Known limitations