types: define RegexFlags as a subtype of String

sanctuary-js / sanctuary-def

Run-time type system for JavaScript

MIT License

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types: define RegexFlags as a subtype of String #253

Closed davidchambers closed 5 years ago

davidchambers commented 5 years ago

This makes $.RegexFlags more descriptive, and will make it much easier to increase the set of permissible flags (which we should certainly do at some point).