changelog.md

3.1

• Add validOptions config option, to specify a discrete set of acceptable values.
• validate methods now take an unknown argument, which is more appropriate than any as it encourages more deliberate type assertions.

3.0

• Move custom Error fields to the cause property where they belong.

2.3

• add jack.usageMarkdown() method

2.2

• add support for {pre:true} on description fields
• add heading level support

2.1

• Add jack.setConfigValues() method

2.0

• Complete rewrite as hybrid TypeScript module

1.1

• Cosmetic changes to help output
• implies support
• valid option value lists

1.0

Multi-section parsing, environment variables

0.1

Automatic --help usage output handling

0.0

Basic functionality. No help or usage output support yet.