kysely-mapper/dist/cjs/mappers/entire-row-transforms.d.ts

Flexible Kysely-based utility for mapping between tables and objects

import { Insertable, Selectable, Updateable } from 'kysely';
import { SelectableColumnTuple, SelectedRow, SelectionColumn } from '../lib/type-utils.js';
import { TableMapperTransforms } from './table-mapper-transforms.js';
/**
 * Transforms for a table mapper that only receives and returns
 * entire table rows, given by type `Selectable<DB[TB]>`.
 * @typeParam DB Interface whose fields are table names defining tables.
 * @typeParam TB Name of the table.
 * @typeParam KeyColumns Tuple of the names of the table's key columns.
 *  Defaults to `[]`, indicating no key columns. Supports up to 4 columns.
 * @typeParam InsertReturnColumns Columns to return from the table on insert
 *  queries that return columns. `['*']` returns all columns; `[]` returns
 *  none. May specify aliases. Defaults to `KeyColumns`.
 * @typeParam UpdateReturnColumns Columns to return from the table on update
 *  queries that return columns. `['*']` returns all columns; `[]` returns
 *  none and is the default. May specify aliases.
 */
export declare class EntireRowTransforms<DB, TB extends keyof DB & string, KeyColumns extends Readonly<SelectableColumnTuple<DB[TB]>> | Readonly<[]>, InsertReturnColumns extends Readonly<SelectionColumn<DB, TB>[]> | ['*'], UpdateReturnColumns extends Readonly<SelectionColumn<DB, TB>[]> | ['*']> implements Required<TableMapperTransforms<DB, TB, KeyColumns, [
    '*'
], Selectable<DB[TB]>, Selectable<DB[TB]>, Selectable<DB[TB]>, number, InsertReturnColumns, UpdateReturnColumns, Selectable<DB[TB]>, Selectable<DB[TB]>>> {
    readonly keyColumns: KeyColumns;
    /**
     * Constructs an object providing transforms for entire table rows.
     */
    constructor(keyColumns: KeyColumns);
    /**
     * Transform a count of the number of rows affected into a number.
     */
    countTransform(count: bigint): number;
    /**
     * Transforms inserted objects into inserted rows, removing the columns
     * that are keys having falsy values.
     */
    insertTransform(obj: Selectable<DB[TB]>, _columns: Readonly<(keyof Insertable<DB[TB]>)[]> | ['*']): Insertable<DB[TB]>;
    /**
     * Transforms the returns of an insert query into the the object returned
     * to the caller, merging the returned values into the inserted object.
     */
    insertReturnTransform(source: Selectable<DB[TB]>, returns: InsertReturnColumns extends [] ? never : SelectedRow<DB, TB, InsertReturnColumns extends ['*'] ? never : InsertReturnColumns[number], InsertReturnColumns>): Selectable<DB[TB]>;
    /**
     * Returns selected rows to the caller as selected objects, unchanged.
     */
    selectTransform(row: Selectable<DB[TB]>): Selectable<DB[TB]>;
    /**
     * Provides updating objects as the update values for an update query.
     */
    updateTransform(source: Selectable<DB[TB]>, _columns: Readonly<(keyof Updateable<DB[TB]>)[]> | ['*']): Updateable<DB[TB]>;
    /**
     * Transforms the returns of an update query into the the object returned
     * to the caller, merging the returned values into the updating object.
     */
    updateReturnTransform(source: Selectable<DB[TB]>, returns: UpdateReturnColumns extends [] ? never : SelectedRow<DB, TB, UpdateReturnColumns extends ['*'] ? never : UpdateReturnColumns[number], UpdateReturnColumns>): Selectable<DB[TB]>;
}
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