fix: compatibility with old types (#198)

Author: alexander-akait

declarations/validate.d.ts

@@ -10,6 +10,7 @@ export type ExtendedSchema = {
   link?: string | undefined;
   undefinedAsNull?: boolean | undefined;
 };
+export type Extend = ExtendedSchema;
 export type Schema = (JSONSchema4 | JSONSchema6 | JSONSchema7) & ExtendedSchema;
 export type SchemaUtilErrorObject = ErrorObject & {
   children?: Array<ErrorObject>;

src/validate.js

@@ -59,6 +59,9 @@ const getAjv = memoize(() => {
  * @property {boolean=} undefinedAsNull
  */
 
+// TODO remove me in the next major release
+/** @typedef {ExtendedSchema} Extend */
+
 /** @typedef {(JSONSchema4 | JSONSchema6 | JSONSchema7) & ExtendedSchema} Schema */
 
 /** @typedef {ErrorObject & { children?: Array<ErrorObject> }} SchemaUtilErrorObject */