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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176import { Assert, assert, AssertFalse, AssertTrue, Has, IsAny, IsExact, IsNever, IsNullable, IsUnknown, NotHas,} from "./mod.ts";
// IsNullable{ // matching assert<IsNullable<string | null>>(true); assert<IsNullable<string | undefined>>(true); assert<IsNullable<null | undefined>>(true); // maybe this shouldn't be true?
// not matching assert<IsNullable<string>>(false); assert<IsNullable<any>>(false); assert<IsNullable<never>>(false); assert<IsNullable<unknown>>(false);}
// IsExact{ // matching assert<IsExact<string | number, string | number>>(true); assert<IsExact<string | number | Date, string | number | Date>>(true); assert<IsExact<string | undefined, string | undefined>>(true); assert<IsExact<any, any>>(true); // ok to have any for both assert<IsExact<unknown, unknown>>(true); assert<IsExact<never, never>>(true); assert<IsExact<{}, {}>>(true); assert<IsExact<{ prop: string }, { prop: string }>>(true); assert<IsExact<{ prop: { prop: string } }, { prop: { prop: string } }>>(true); assert<IsExact<{ prop: never }, { prop: never }>>(true); assert<IsExact<{ prop: any }, { prop: any }>>(true); assert<IsExact<{ prop: unknown }, { prop: unknown }>>(true); assert<IsExact<typeof globalThis, typeof globalThis>>(true);
// not matching assert<IsExact<string | number | Date, string | number>>(false); assert<IsExact<string, string | number>>(false); assert<IsExact<string | undefined, string>>(false); assert<IsExact<string | undefined, any | string>>(false); assert<IsExact<any | string | undefined, string>>(false); assert<IsExact<string, any>>(false); assert<IsExact<string, unknown>>(false); assert<IsExact<string, never>>(false); assert<IsExact<never, never | string>>(false); assert<IsExact<unknown, any>>(false); assert<IsExact<never, any>>(false); assert<IsExact<Date | typeof globalThis, Date>>(false); assert<IsExact<{ name: string; other?: Date }, { name: string }>>(false); assert<IsExact<{ prop: Date }, { prop: string }>>(false); assert<IsExact<{ other?: Date }, { prop?: string }>>(false); assert<IsExact<{ prop: { prop?: string } }, { prop: { prop: string } }>>(false); assert<IsExact<{ prop: any }, { prop: string }>>(false); assert<IsExact<{ prop: any }, { prop: unknown }>>(false); assert<IsExact<{ prop: any }, { prop: never }>>(false); assert<IsExact<{ prop: unknown }, { prop: never }>>(false); assert<IsExact<{ prop: { prop: unknown } }, { prop: { prop: any } }>>(false); assert<IsExact<{ prop: { prop: unknown } }, { prop: { prop: never } }>>(false); assert<IsExact<{ prop: { prop: any } }, { prop: { prop: never } }>>(false); assert<IsExact<{ prop: string }, { prop: never }>>(false); assert<IsExact<{ prop: { prop: any } }, { prop: { prop: string } }>>(false); assert<IsExact<{ prop: any } | { prop: string }, { prop: number } | { prop: string }>>(false); assert<IsExact<{ prop: string | undefined }, { prop?: string }>>(false); // these are different}
// Has{ // matching assert<Has<string | number, string>>(true); assert<Has<number, number>>(true); assert<Has<string | number, Date | string>>(true); // maybe? assert<Has<any, number>>(true); assert<Has<any, any>>(true); assert<Has<any, unknown>>(true); assert<Has<any, never>>(true);
// not matching assert<Has<string | number, Date>>(false); assert<Has<string, number>>(false); assert<Has<number, any>>(false); assert<Has<unknown, any>>(false); assert<Has<never, any>>(false);}
// NotHas{ // matching assert<NotHas<string | number, Date>>(true); assert<NotHas<string, number>>(true);
// not matching assert<NotHas<string | number, string>>(false); assert<NotHas<number, number>>(false); assert<NotHas<string | number, Date | string>>(false); // should be true?}
// IsAny{ // matching assert<IsAny<any>>(true);
// not matching assert<IsAny<string>>(false); assert<IsAny<unknown>>(false); assert<IsAny<never>>(false);
// tests for issue #3 (IsAny resolving to boolean) assert<IsExact<IsAny<string>, false>>(true); assert<IsExact<IsAny<5>, false>>(true);}
// IsNever{ // matching assert<IsNever<never>>(true);
// not matching assert<IsNever<string>>(false); assert<IsNever<any>>(false); assert<IsNever<unknown>>(false);}
// IsUnknown{ // matching assert<IsUnknown<unknown>>(true);
// not matching assert<IsUnknown<string>>(false); assert<IsUnknown<any>>(false); assert<IsUnknown<never>>(false);}
// AssertTrue{ type test = AssertTrue<IsNever<never>>;}
// AssertFalse{ type test = AssertFalse<IsNever<string>>;}
// Assert{ type test = | Assert<Has<string | number, number>, true> | Assert<Has<string | number, Date>, false>;}
// Recursive types{ type RecursiveType1 = string | number | Date | RecursiveType1[]; assert<IsExact<RecursiveType1, RecursiveType1>>(true); type RecursiveType2 = { a: string; prop: RecursiveType2; sub: { prop: RecursiveType2; other: RecursiveType1; }; }; assert<IsExact<RecursiveType2, RecursiveType2>>(true); assert<IsExact<RecursiveType1, RecursiveType2>>(false);}