/**
 * Shared pino logger factory for all Grackle server-side packages.
 *
 * @module
 */
import { type Logger } from "pino";
/** Options for {@link createPinoLogger}. */
export interface CreatePinoLoggerOptions {
    /** Logger `name` field (e.g. `"grackle-server"`). */
    name: string;
    /** Optional pino mixin function (e.g. for traceId injection). */
    mixin?: () => object;
}
/**
 * Create a pino logger with Grackle's standard level and transport config.
 *
 * Level is read from `LOG_LEVEL` (validated; invalid values fall back to `"info"`).
 * In non-production environments the `pino/file` transport writes JSON to stdout (fd 1).
 */
export declare function createPinoLogger(options: CreatePinoLoggerOptions): Logger;
export type { Logger } from "pino";
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