import { z } from "incur";
/** Minimal human-oriented logger used by CLI commands. */
export type HumanLogger = {
    /** Whether this logger should emit human-readable output. */
    enabled: boolean;
    /** Backing stream used for terminal output when available. */
    stream?: NodeJS.WriteStream | undefined;
    /** Write raw text without appending a newline. */
    write(text: string): void;
    /** Write text and ensure it ends with a trailing newline. */
    writeln(text: string): void;
};
/** Disabled logger implementation used when TTY output is off. */
export declare const disabledLogger: HumanLogger;
/** CLI middleware vars schema that threads a `HumanLogger` through commands. */
export declare const loggerVarsSchema: z.ZodObject<{
    logger: z.ZodDefault<z.ZodCustom<HumanLogger, HumanLogger>>;
}, z.core.$strip>;
/** Create a human logger backed by a stream or custom write callback. */
export declare function createHumanLogger(options?: {
    enabled?: boolean | undefined;
    stream?: NodeJS.WriteStream | undefined;
    write?: ((text: string) => void) | undefined;
}): HumanLogger;
/** Attach a stderr-backed human logger to every CLI request context. */
export declare const loggerMiddleware: import("incur").MiddlewareHandler<z.ZodObject<{
    logger: z.ZodDefault<z.ZodCustom<HumanLogger, HumanLogger>>;
}, z.core.$strip>, undefined>;
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