/**
 * Output formatting for CLI commands — the ONE formatter (issue #383).
 *
 * Every command's machine-readable output flows through {@link formatOutput}:
 * the `getFormat`-style commands (repos/stats/workflows/channels/activity)
 * call it directly, and {@link emit} — the boolean-flag front door the
 * `pr`/`issue`/loop commands use — is a thin adapter onto it. There is no
 * second serialization path.
 *
 * Compatibility contract: the per-command `--json` byte shapes are LOCKED
 * (src/__tests__/json-shape-lock.test.ts). The formatOutput family prints
 * pretty JSON (2-space); emit prints compact JSON unless `{ pretty: true }`.
 * Each command keeps its historical flavor — never change a default here.
 */
export type OutputFormat = "table" | "json" | "yaml";
/** The boolean output flags commander collects from `--json` / `--yaml`. */
export interface FormatFlags {
    json?: boolean;
    yaml?: boolean;
}
/** Map `--json`/`--yaml` flags to a format. `--json` wins when both are
 * passed — the historical `getFormat` precedence, kept everywhere. */
export declare function resolveFormat(flags: FormatFlags): OutputFormat;
export declare function printJson(data: unknown, pretty?: boolean): void;
/** Serialize to YAML (single implementation — used by printYaml and the
 * log-injected printers, e.g. `regression --wait`). */
export declare function toYamlString(data: unknown): string;
export declare function printYaml(data: unknown): void;
/** Print a simple ASCII table. */
export declare function printTable(headers: string[], rows: string[][]): void;
/** Format data according to the chosen format. For json/yaml, prints raw; for
 * table, caller provides formatter. `prettyJson` defaults to true — the
 * historical formatOutput flavor; {@link emit} passes its own. */
export declare function formatOutput(format: OutputFormat, data: unknown, tableFormatter: () => void, { prettyJson }?: {
    prettyJson?: boolean;
}): void;
/** Print a command's result once, honoring `--json` / `--yaml`. In JSON mode,
 * serializes `jsonValue` (compact by default; pretty-printed with 2-space
 * indent when `pretty`); in YAML mode serializes the same value as YAML;
 * otherwise runs `humanPrint`. The boolean-flag adapter onto
 * {@link formatOutput} — JSON output stays byte-identical to the historical
 * hand-rolled `JSON.stringify` branches (shape-locked in
 * json-shape-lock.test.ts). */
export declare function emit(opts: FormatFlags, jsonValue: unknown, humanPrint: () => void, { pretty }?: {
    pretty?: boolean;
}): void;
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