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@just-func/types

v0.5.1

Published

2 years ago

Types for just-func code

Downloads

544

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just-func types

@just-func/types

Type System of just-func.

JustEmpty: A empty value.
JustUno: A single value.
JustDuo: A value with meta.
JustValue: Infer type of JustEmpty, JustUno, and JustDuo.
justValue(): helper to define JustValue.
JustResult: Return value of a function compliant with just-func.
JustFunction: Functions that compliant with just-func
justFunction(): helper to define JustFunction.

Type guards

isJustEmpty()
isJustUno()
isJustDuo()
isJustValue()

Metadata

Metadata is a first-class concept in just-func. A compliant just-func function can accept a JustMeta value as its second parameter.

The parameter is read only and can never be modified by the calling function.

JustMeta: The basic form of metadata.
StackTraceMeta: Metadata for function that can adjust its stack trace when error occurs.