/**
 * Pure helpers that classify an Atlas declarative-apply plan as destructive
 * or not, and decide what `rebase db push` should do about it.
 *
 * `db push` runs `atlas schema apply` to make the live database match the
 * generated `schema.sql`. Removing a collection field compiles to
 * `DROP COLUMN`; renaming compiles to drop-then-add — either destroys data.
 * We first run the apply with `--dry-run` to obtain the planned SQL, scan it
 * here, and refuse to auto-approve anything destructive without an explicit
 * opt-in.
 *
 * Everything in this file is side-effect free so it can be unit-tested
 * without Atlas or a database.
 */
/**
 * Split a SQL script into individual statements, dropping blank lines and
 * `--` comment lines. Deliberately simple: Atlas emits one plain statement
 * per `;`, without string literals that contain semicolons in a schema DDL
 * plan, so a naive split is safe and keeps this dependency-free.
 */
export declare function splitSqlStatements(sql: string): string[];
export interface DestructiveStatement {
    /** The offending statement (trimmed, without the trailing `;`). */
    statement: string;
    /** Which destructive operation it was flagged for, e.g. "DROP COLUMN". */
    kind: string;
}
/**
 * Scan an Atlas plan (the SQL printed by `schema apply --dry-run`) and return
 * the statements that would destroy data. An empty array means the plan is
 * safe to auto-approve.
 */
export declare function detectDestructiveStatements(planSql: string): DestructiveStatement[];
export type PushDecision = "apply" | "confirm" | "refuse";
/**
 * Decide how `db push` should proceed given the plan's destructiveness and
 * the invocation context.
 *
 *  - No destructive statements → `apply` (safe to auto-approve).
 *  - Destructive + `--allow-destructive` → `apply` (operator opted in).
 *  - Destructive + interactive TTY → `confirm` (prompt before applying).
 *  - Destructive + non-interactive → `refuse` (never silently drop data in
 *    CI / scripts / agents).
 */
export declare function decidePushSafety(opts: {
    destructiveCount: number;
    allowDestructive: boolean;
    interactive: boolean;
}): PushDecision;