Class TypeGuardRegistry

See

register() for specificality explanation.

Lowest specificality first

Registers a new template and replaces all existing (added via register,prepend,append).

Specificality defines when the given template guard is executed.

• 1 means its used for JS types - exact types. For example for type string 'string' ==== typeof v is used. Same for number, bigint, and boolean. Guards of this specificality are used for the is() function.

• 1 means it acts as a fallback. For example in a union number | Date, when a string is given, the Date can allow string type as well, so it gets converted to a Date.

• 0 && <1 means its acts as a priority guard. For example in a string | Date, a string of date-format is converted to a Date instead of a string. This is necessary to support regular JSON.

• <0, anything below 0 means it can optionally be used for loosely types. This is handy when data comes from a string-only encoding like URL query strings. In this specificality a numeric string is converted to a number or bigint, a 1|0|true|false string converted to boolean .

See

register

See

register