mealie/frontend/composables/use-validators.ts

const EMAIL_REGEX =
  /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|(".+"))@(([[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;

const URL_REGEX = /[-a-zA-Z0-9@:%._+~#=]{1,256}.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_+.~#?&//=]*)/;

export const validators = {
  required: (v: string) => !!v || "This Field is Required",
  email: (v: string) => !v || EMAIL_REGEX.test(v) || "Email Must Be Valid",
  whitespace: (v: string) => !v || v.split(" ").length <= 1 || "No Whitespace Allowed",
  url: (v: string) => !v || URL_REGEX.test(v) || "Must Be A Valid URL",
  minLength: (min: number) => (v: string) => !v || v.length >= min || `Must Be At Least ${min} Characters`,
  maxLength: (max: number) => (v: string) => !v || v.length <= max || `Must Be At Most ${max} Characters`,
};