import { LiteralUnion } from 'type-fest';
type Inspect = (input: unknown, options: Options) => string;
interface Options {
  /**
  * When `true`, honour custom inspectors: a value's
  * `Symbol.for("nodejs.util.inspect.custom")` method (Node only),
  * `Symbol.for("chai/inspect")` method, an `.inspect()` method, or a handler
  * registered via `registerConstructor` / `registerStringTag`.
  * @default true
  */
  customInspect: boolean;
  /**
  * The maximum nesting depth to traverse before collapsing a nested value to
  * `[Object]` / `[Array]`. A value `<= 0` disables the limit.
  * @default 5
  */
  depth: number;
  /**
  * Pretty-print with indentation. `"\t"` indents with tabs, a positive integer
  * indents with that many spaces, and `undefined` keeps everything on one line.
  * @default undefined
  */
  indent: number | "	" | undefined;
  /**
  * The maximum number of array / typed-array / iterable elements to render
  * before the remainder is replaced with an `… (N more)` marker. Use
  * `Number.POSITIVE_INFINITY` to show every element.
  * @default Number.POSITIVE_INFINITY
  */
  maxArrayLength: number;
  /**
  * When `true`, render large numbers and bigints with `_` digit-group
  * separators (e.g. `1_000_000`).
  * @default true
  */
  numericSeparator: boolean;
  /**
  * The quote character used when rendering string values and complex object
  * keys.
  * @default "single"
  */
  quoteStyle: "double" | "single";
  /**
  * When `true`, also render non-enumerable own properties of plain objects
  * (mirrors `util.inspect`'s `showHidden`).
  * @default false
  */
  showHidden: boolean;
  /**
  * Colourize / decorate a rendered fragment. Receives the raw fragment and a
  * style hint and must return the (optionally wrapped) string. Defaults to the
  * identity function.
  */
  stylize: (value: string, styleType: LiteralUnion<"bigint" | "boolean" | "date" | "null" | "number" | "regexp" | "special" | "string" | "symbol" | "undefined", string>) => string;
  /**
  * The maximum length (in characters) of a single rendered value before it is
  * truncated with an ellipsis. Use `Number.POSITIVE_INFINITY` to disable
  * truncation.
  * @default Number.POSITIVE_INFINITY
  */
  truncate: number;
}
declare const inspect: (value: unknown, options_?: Partial<Options>) => string;
/**
* The symbol a value can expose a custom inspector under. Mirrors loupe's
* `custom` export (`Symbol.for("chai/inspect")`); the attached function is
* called with the resolved {@link Options} and must return a string.
*/
declare const custom: symbol;
declare const registerConstructor: (constructor: Function, inspector: Inspect) => boolean;
declare const registerStringTag: (stringTag: string, inspector: Inspect) => boolean;
export { type Options, custom, inspect, registerConstructor, registerStringTag };