StringSchemaBuilder

Provides the universal and metadata methods ($id, title, description, enum, const, anyOf, allOf, oneOf, not, if, errorMessage, extend, build, …) plus the string-specific constraints below. Per type locking, only this type’s constraints are accessible once the builder is locked to string.

Method	Parameters	Returns	Description
`.minLength(len)`	`number` or `$data`	`SchemaBuilder`	Minimum string length
`.maxLength(len)`	`number` or `$data`	`SchemaBuilder`	Maximum string length
`.pattern(regex)`	`string` or `RegExp` or `$data`	`SchemaBuilder`	Regex pattern
`.format(name)`	`string` or `$data`	`SchemaBuilder`	Format validation (email, uri, date-time, etc.)