/** Foreign key referential action. */
export type ForeignKeyAction = 'cascade' | 'set null' | 'set default' | 'restrict' | 'no action';
/**
 * A column definition with chainable modifiers.
 *
 * @example
 * const name = text("name").notNull().default("unnamed");
 */
export interface ColumnDef<T, S extends string = string> {
    readonly name: string;
    primaryKey(): ColumnDef<T, S>;
    notNull(): ColumnDef<T, S>;
    unique(): ColumnDef<T, S>;
    /** Set a static default value used when the value is omitted during insert. */
    default(value: T): ColumnDef<T, S>;
    /** Set a dynamic default function called when the value is omitted during insert. */
    defaultFn(fn: () => T): ColumnDef<T, S>;
    /**
     * Define a foreign key reference to another table's column.
     *
     * @example
     * text("userId").references(users.id)
     */
    references(target: ColumnDef<any, any>): ColumnDef<T, S>;
    /** Set ON DELETE action for the foreign key. Requires `.references()` to be called first. */
    onDelete(action: ForeignKeyAction): ColumnDef<T, S>;
    /** Set ON UPDATE action for the foreign key. Requires `.references()` to be called first. */
    onUpdate(action: ForeignKeyAction): ColumnDef<T, S>;
    readonly __internal: {
        /** Phantom — exists only at the type level, never accessed at runtime. */
        readonly _type: T;
        /** SQLite storage class: "text" | "integer" | "real" | "blob". */
        readonly sqlType: S;
        /** Column constraint flags — set via modifiers, read by migration generator. */
        readonly isPrimaryKey: boolean;
        readonly isNotNull: boolean;
        readonly isUnique: boolean;
        readonly hasDefault: boolean;
        readonly defaultValue: T | undefined;
        readonly defaultFn: (() => T) | undefined;
        readonly isAutoIncrement: boolean;
        readonly hasDefaultNow: boolean;
        readonly hasOnUpdate: boolean;
        /** Foreign key reference — table and column names. */
        readonly referencesTable: string | null;
        readonly referencesColumn: string | null;
        /** Foreign key referential actions. */
        readonly onDelete: ForeignKeyAction | null;
        readonly onUpdate: ForeignKeyAction | null;
        /** Converts logical value → storage value. Called by the builder. */
        readonly encode: (value: T) => unknown;
        /** Converts storage value → logical value. Called by the builder. */
        readonly decode: (value: unknown) => T;
        /** Table name — set by table() when the column is attached. Used for join disambiguation. */
        readonly tableName: string | null;
    };
}
/** An integer column definition with auto-increment support. */
export interface IntegerColumnDef<S extends string = 'integer'> extends ColumnDef<number, S> {
    primaryKey(): IntegerColumnDef<S>;
    notNull(): IntegerColumnDef<S>;
    unique(): IntegerColumnDef<S>;
    default(value: number): IntegerColumnDef<S>;
    defaultFn(fn: () => number): IntegerColumnDef<S>;
    /**
     * Mark as auto-increment (SQLite ROWID alias).
     *
     * @example
     * const id = integer("id").primaryKey().autoIncrement();
     */
    autoIncrement(): IntegerColumnDef<S>;
}
/** A date column that stores a unix timestamp (milliseconds) in SQLite. Nullable in results unless `.defaultNow()` is called. */
export interface DateColumnDef extends ColumnDef<Date, 'integer'> {
    primaryKey(): DateColumnDef;
    notNull(): DateColumnDef;
    unique(): DateColumnDef;
    default(value: Date): DateColumnDef;
    defaultFn(fn: () => Date): DateColumnDef;
    /**
     * Use `Date.now()` as the default when the value is omitted during insert.
     *
     * @example
     * const createdAt = date("created_at").defaultNow();
     */
    defaultNow(): DateColumnDefWithDefault;
    /**
     * Always set to `Date.now()` on update, regardless of the provided value.
     *
     * @example
     * const updatedAt = date("updated_at").onUpdateTimestamp();
     */
    onUpdateTimestamp(): DateColumnDef;
}
/** A date column with a guaranteed default value, making it non-nullable in query results. */
export interface DateColumnDefWithDefault extends DateColumnDef {
    primaryKey(): DateColumnDefWithDefault;
    notNull(): DateColumnDefWithDefault;
    unique(): DateColumnDefWithDefault;
    default(value: Date): DateColumnDefWithDefault;
    defaultFn(fn: () => Date): DateColumnDefWithDefault;
    defaultNow(): DateColumnDefWithDefault;
    onUpdateTimestamp(): DateColumnDefWithDefault;
}
/**
 * Create a text column.
 *
 * @example
 * const name = text("name").notNull();
 */
export declare function text(name?: string): ColumnDef<string, 'text'>;
/**
 * Create an integer column.
 *
 * @example
 * const id = integer("id").primaryKey().autoIncrement();
 */
export declare function integer(name?: string): IntegerColumnDef<'integer'>;
/**
 * Create a boolean column. Stores `0`/`1` in SQLite, exposed as `boolean` in TypeScript.
 *
 * @example
 * const active = boolean("active").notNull().default(true);
 */
export declare function boolean(name?: string): ColumnDef<boolean, 'integer'>;
/**
 * Create a JSON column. Stores JSON text in SQLite, exposed as `T` in TypeScript.
 *
 * @example
 * const meta = json<Record<string, unknown>>("meta").default({});
 */
export declare function json<T>(name?: string): ColumnDef<T, 'text'>;
/**
 * Create a date column. Stores a unix timestamp (milliseconds) in SQLite, exposed as `Date` in TypeScript.
 *
 * @example
 * const createdAt = date("created_at").defaultNow().notNull();
 */
export declare function date(name?: string): DateColumnDef;
/**
 * Create a real (floating-point) column.
 *
 * @example
 * const price = real("price").notNull();
 */
export declare function real(name?: string): ColumnDef<number, 'real'>;