kysely
Version:
Type safe SQL query builder
8 lines (7 loc) • 600 B
TypeScript
import type { MergeQueryBuilder } from '../query-builder/merge-query-builder.js';
import type { MergeResult } from '../query-builder/merge-result.js';
import type { ShallowRecord } from '../util/type-utils.js';
import type { ExtractTableAlias, SimpleTableReference } from './table-parser.js';
export type MergeInto<DB, TE extends SimpleTableReference<DB>> = [TE] extends [
keyof DB
] ? MergeQueryBuilder<DB, ExtractTableAlias<DB, TE>, MergeResult> : [TE] extends [`${infer T} as ${infer A}`] ? T extends keyof DB ? MergeQueryBuilder<DB & ShallowRecord<A, DB[T]>, A, MergeResult> : never : never;