import type { FormatCodec } from "../format-codec.js";
/**
 * Result of parsing a single JSONL line.
 */
export interface ParsedLine {
    /** 1-based line number in the source file */
    readonly lineNumber: number;
    /** The raw text of the line */
    readonly rawLine: string;
    /** The parsed JSON value (undefined if parse failed) */
    readonly parsed: unknown;
    /** JSON parse error message, if parsing failed */
    readonly parseError?: string;
}
/**
 * Parse a raw JSONL string line-by-line, returning per-line results
 * with 1-based line numbers and individual parse errors.
 *
 * Empty/whitespace-only lines are skipped.
 */
export declare const jsonlDecodeLines: (raw: string) => ReadonlyArray<ParsedLine>;
/**
 * Creates a JSONL (JSON Lines / Newline Delimited JSON) codec.
 *
 * Each element of the array is serialized as a single JSON line.
 * On decode, each non-empty line is parsed as a JSON value.
 *
 * @returns A FormatCodec for JSONL serialization
 *
 * @example
 * ```typescript
 * const codec = jsonlCodec()
 * const layer = makeSerializerLayer([codec])
 * ```
 */
export declare const jsonlCodec: () => FormatCodec;
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