Releases: ahrjarrett/any-ts
Releases · ahrjarrett/any-ts
v0.45.0
v0.44.2
v0.44.1
v0.44.0
Minor Changes
-
d2c28aa: feat: adds
hasmodule-
has.onePropertylets you express a constraint that the input type contains exactly 1 property. For example:/** * @example * const one = singleton({ a: 1 }) // ✅ * const zero = singleton({}) // 🚫 * // ^? const zero: never * const two = singleton({ a: 1, b: 2 }) // 🚫 * // ^? const two: never */ declare function singleton<const T extends has.oneProperty<T>>( objectWithExactlyOneProperty: T ): T;
Note:
has.onePropertyaccepts 2 additional optional type parameters- an invariant, which allows you to apply an additional constraint on the type of the property itself; and
- a "debug" flag, which, if non-never, changes the behavior of
has.onePropertyto raise a customTypeErrorifTfails to satisfy the constraint
-
has.oneElement/** * @example * const one = singleton([1]) // ✅ * // ^? const one: readonly [1] * * const zero = singleton([]) // 🚫 * // ^? const zero: never * const two = singleton([1, 2]) // 🚫 * // ^? const two: never */ declare function oneNumber<const T extends has.oneElement<T, number>>( tupleContainingOneNumber: T ): T;
Note: like
has.oneProperty,has.oneElementalso accepts 2 additional optional type parameters- an invariant, which allows you to apply an additional constraint on the type of the element itself; and,
- a "debug" flag, which, if non-never, changes the behavior of
has.oneElementto raise a customTypeErrorifTfails to satisfy the constraint
-
v0.43.7
v0.43.6
v0.43.5
v0.43.4
Patch Changes
- 8c4fcc5: feat: adds