String Schemas

Length constraints


const usernameSchema = new SchemaBuilder()
  .string()
  .minLength(3)
  .maxLength(20)
  .build();
// { type: "string", minLength: 3, maxLength: 20 }

Pattern matching


// Using RegExp
const slugSchema = new SchemaBuilder()
  .string()
  .pattern(/^[a-z0-9-]+$/)
  .build();
 
// Using a string
const emailPattern = new SchemaBuilder()
  .string()
  .pattern("^[\\w-\\.]+@([\\w-]+\\.)+[\\w-]{2,4}$")
  .build();

Format validation


const contactSchema = new SchemaBuilder()
  .object()
  .properties({
    email: (s) => s.string().format("email"),
    website: (s) => s.string().format("uri"),
    createdAt: (s) => s.string().format("date-time"),
  })
  .build();

Supported formats: email, uri, uri-reference, uri-template, date, time, date-time, duration, uuid, ipv4, ipv6, hostname, json-pointer, relative-json-pointer, regex.