import type { ValueChild, ValueSegment } from '../../../types/inspector.js';
/** Most children listed per expanded level. */
export declare const MAX_CHILDREN = 100;
/** Whether `value` has at least one child to list. Never throws. */
export declare const isExpandable: (value: unknown) => boolean;
/**
 * The first {@link MAX_CHILDREN} children of `value`, and how many more
 * there are. A value with none gives an empty list.
 */
export declare const childrenOf: (value: unknown) => {
    children: ValueChild[];
    more: number;
};
/**
 * The child of `value` that `key` names, as {@link childrenOf} numbered it,
 * or `undefined` when it does not resolve.
 */
export declare const stepInto: (value: unknown, key: ValueSegment) => {
    value: unknown;
} | undefined;
/**
 * Write the primitive `value` into the slot of `container` that `key` names,
 * as {@link childrenOf} numbered it: an object key, an array or typed array
 * index, or the position of a `Map` entry, whose value is replaced. Identity
 * is kept, as the container is changed in place. Only a slot already holding
 * a primitive of the same type is written, and a number must be finite.
 * A `Set` member has no slot, and a frozen container refuses; both give
 * false, as does anything that does not resolve. Never throws.
 */
export declare const writeInto: (container: unknown, key: ValueSegment, value: string | number | boolean) => boolean;
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