Bugfix version

• Minor improvements to error messages

Bugfix version

• Failed assert() error message does not show (received undefined)

Minor version

Minor version introducing new features:

• Allow prefix and error arguments for check() and args()
• Add assert() function

Minor version

Minor version introducing new features but not changing any existing APIs

• Enable tuple arrays via [type1, type2] syntax

Minor version

• Make properties created with props() enumerable
• Return the original object from props() (for chaining)

Minor version

Minor version introducing new features with no breaking changes:

• Add grouping for string types via parentheses, e.g. (str | num)
• Add empty type to detect emptiness in strings, arrays, Map, Set, and objects
• Add alphabetic, numeric and alphanumeric string types for specific strings

Minor version

Minor version introducing new functionality

• Add object and array string modifiers (using type[], {type} and { keyType: type } syntax)

Bugfix release

• Add documentation for ValueError and debug()
• Minor README improvements

Bugfix release

• README: Tables fix

Major version

Major version introducing several breaking changes

• Add VALUES, KEYS, and CLASS symbol constants
• Remove _any key function and introduce VALUES to provide the same functionality
• Add KEYS functionality to check type or case of object keys, e.g. camelCase or kebab-case
• Add CLASS functionality to check the class of an object
• Add string case checkers for e.g. variable names (kebab-case, camelCase, snake_case etc)
• upper and lower checkers work differently (all characters must be UPPERCASE/lowercase)
• Rename num+, num-, int+, int- checkers to +int etc
• Add '+' modifier to check for non-empty values with any checker
• Remove hardcoded '+' checkers like lower+, object+
• Remove uppercase and lowercase checkers for consistency