import { ExternalTokenizer } from '@lezer/lr';
/**
 * Tokenizes the filter key as an identifier that allows a non-leading dollar sign as a literal
 * character (e.g. `json$key = 123`). A leading dollar sign returns `0` to defer to the grammar's
 * `Variable` token. The scanned run stops at a JSONPath boundary (`$.` or `$[`) — a trailing `$`
 * that begins a JSONPath is left for the grammar's `JsonPathBase` rule to consume. See
 * dev-decisions.md.
 * @internal
 */
export declare const keyIdentifierTokenizer: ExternalTokenizer;
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