a simple matrix webapp for mobile and desktop


Rules are defined via a callback which retuns true or an error String. This is
so that you can define rules by using an or operator like this:

new Rule((v) => typeof v === "string" || "is not a string");

or this:

new Rule((v) =>
  typeof v === "string" && !!v.match(/^\w+@\w+\.\w+$/) ||
  "no valid email"
  • If a executing a validation completes without an error an object with the same
    structure as the object given is returned.

  • For creating powerful nested object rules there are some primites given:
    How to use (opens new window)