kysely
Version:
Type safe SQL query builder
13 lines (12 loc) • 2.17 kB
TypeScript
import { ExtractTypeFromReferenceExpression } from './reference-parser.js';
export type ExtractTypeFromCoalesce1<DB, TB extends keyof DB, R1> = ExtractTypeFromReferenceExpression<DB, TB, R1>;
export type ExtractTypeFromCoalesce2<DB, TB extends keyof DB, R1, R2> = ExtractTypeFromCoalesceValues2<ExtractTypeFromReferenceExpression<DB, TB, R1>, ExtractTypeFromReferenceExpression<DB, TB, R2>>;
type ExtractTypeFromCoalesceValues2<V1, V2> = null extends V1 ? null extends V2 ? V1 | V2 : NotNull<V1 | V2> : NotNull<V1>;
export type ExtractTypeFromCoalesce3<DB, TB extends keyof DB, R1, R2, R3> = ExtractTypeFromCoalesceValues3<ExtractTypeFromReferenceExpression<DB, TB, R1>, ExtractTypeFromReferenceExpression<DB, TB, R2>, ExtractTypeFromReferenceExpression<DB, TB, R3>>;
type ExtractTypeFromCoalesceValues3<V1, V2, V3> = null extends V1 ? null extends V2 ? null extends V3 ? V1 | V2 | V3 : NotNull<V1 | V2 | V3> : NotNull<V1 | V2> : NotNull<V1>;
export type ExtractTypeFromCoalesce4<DB, TB extends keyof DB, R1, R2, R3, R4> = ExtractTypeFromCoalesceValues4<ExtractTypeFromReferenceExpression<DB, TB, R1>, ExtractTypeFromReferenceExpression<DB, TB, R2>, ExtractTypeFromReferenceExpression<DB, TB, R3>, ExtractTypeFromReferenceExpression<DB, TB, R4>>;
type ExtractTypeFromCoalesceValues4<V1, V2, V3, V4> = null extends V1 ? null extends V2 ? null extends V3 ? null extends V4 ? V1 | V2 | V3 | V4 : NotNull<V1 | V2 | V3 | V4> : NotNull<V1 | V2 | V3> : NotNull<V1 | V2> : NotNull<V1>;
export type ExtractTypeFromCoalesce5<DB, TB extends keyof DB, R1, R2, R3, R4, R5> = ExtractTypeFromCoalesceValues5<ExtractTypeFromReferenceExpression<DB, TB, R1>, ExtractTypeFromReferenceExpression<DB, TB, R2>, ExtractTypeFromReferenceExpression<DB, TB, R3>, ExtractTypeFromReferenceExpression<DB, TB, R4>, ExtractTypeFromReferenceExpression<DB, TB, R5>>;
type ExtractTypeFromCoalesceValues5<V1, V2, V3, V4, V5> = null extends V1 ? null extends V2 ? null extends V3 ? null extends V4 ? null extends V5 ? V1 | V2 | V3 | V4 | V5 : NotNull<V1 | V2 | V3 | V4 | V5> : NotNull<V1 | V2 | V3 | V4> : NotNull<V1 | V2 | V3> : NotNull<V1 | V2> : NotNull<V1>;
type NotNull<T> = Exclude<T, null>;
export {};