typescript-type-utils

typescript-type-utils

This repo contains usefull typescript types, to be used across projects.

types

test-kit

the test kit types are utility types for ensuring the API signature of your code.

types	description
ExpectTrue<T>	fails the build if "T" is not true
ExpectFalse<T>	fails the build if "T" is not false
Equal<T1, T2>	equal to true if "T1" is identical to "T2"
NotEqual<T1, T2>	equal to true if "T1" is not identical to "T2"
VALID_ARGS<FUNC, ARGS_TUPPLE>	equal to true if "FUNC" can accept "ARGS_TUPPLE"

example usage:

    type normalStrings = ExpectTrue<
        EQUAL<string, string>
    >

tuple-utils

utility types for manipulating tuple types

types	description
TupleToUnion<T>	equal to a union of the items in the tuple
ReduceTupleOn<T, ID_FIELD, VALUE_FIELD>	reduces the tuple to an object

contribution

• no actual code files are allowed, only d.ts file
• the types are separated according to usage context and can be found in the lib directory
• all types must be tested, see examples in the test directory