import type { EmitResult } from "./types.js";
export interface WriteMigrationOptions {
    /** Migrations root directory (e.g., ".meta/migrations"). Must already exist. */
    dir: string;
    /** Human-readable slug; sanitized to lowercase + hyphens. */
    slug: string;
    /** Override for the timestamp source (UTC). Defaults to new Date(). */
    now?: Date;
}
export interface WriteMigrationResult {
    /** Absolute path to the per-migration directory created. */
    dir: string;
    /** Path to up.sql. */
    upPath: string;
    /** Path to down.sql. */
    downPath: string;
}
export declare function writeMigration(result: Pick<EmitResult, "up" | "down">, opts: WriteMigrationOptions): Promise<WriteMigrationResult>;
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