Provides the infrastructure to allow annotating the return types of functions, and does so for essentially every operation in the system (the only known exceptions being add, multiply, etc., on arbitrarily many arguments).
One main infrastructure enhancements are bounded template types, e.g. `T:number` being a template parameter where T can take on the type `number` or any subtype thereof.
A main internal enhancement is that base template types are no longer added to the typed universe; rather, there is a secondary, "meta" typed universe where they live. The primary point/purpose of this change is then the necessary search order for implementations can be much better modeled by typed-function's search order, using the `onMismatch` facility to redirect the search from fully instantiated implementations to the generic catchall implementations for each template (these catchalls live in the meta universe).
Numerous other small improvements and bugfixes were encountered along the way.
Co-authored-by: Glen Whitney <glen@studioinfinity.org>
Reviewed-on: #53
This should eventually be moved into typed-function itself, but for
now it can be implemented on top of the existing typed-function.
Uses subtypes to define (and error-check) gcd and lcm, which are only
defined for integer arguments.
Resolves#36.
This allows types to be collected; prior to this commit they
were conflicting from different modules.
Uses this fix to extend sqrt to bigint, with the convention
that it is undefined for non-perfect squares when 'predictable'
is false and is the "best" approximation to the square root when
'predictable' is true. Furthermore, for negative bigints, you might
get a Gaussian integer when predictable is false; or you will just get
your argument back when 'predictable' is true because what other
bigint could you give back for a negative bigint?
Also had to modify tests on the sign in sqrt(Complex) and add functions
'zero' and 'one' to get types to match, as expected in #27.
Adds numerous tests.
Resolves#26.
Resolves#27.
Also implements a config object that upon change, lazily invalidates
all operations that access it.
Also allows references to signatures with nonexistent types (which
typed-function does not); they come back as undefined.
Uses these features to implement sqrt for number and complex.
Resolves#7.
