chained-schema

Concise JSON Schema type builders.

Install

npm install chained-schema

Usage

import { object, array, number, boolean, string } from 'chained-schema';
 
const phoneNumber = string.pattern(/\(?\d\d\d\)?-?\d\d\d-?\d\d\d\d/);
const user = object
  .required('firstName', 'lastName')
  .props({
    firstName: string,
    lastName: string,
    email: string.nullable,
    phoneNumber: phoneNumber.nullable,
    password: string.default('secret').minLength(5),
  });

API

Properties that require inputs are called as functions. Properties that don't require inputs are just chained as getters.

For example number.maximum takes an argument, but number.nullable doesn't, so it's a getter instead of a method.

number.minimum(0).nullable.maximum(10)

array

items(items) additionalItems(additionalItems) get uniqueItems

object

props(p) properties(properties) dependencies(dependencies) patternProperties(patternProperties) additionalProperties(additionalProperties) propertyNames(propertyNames) minProperties(minProperties) maxProperties(maxProperties)

string

minLength(minLength) maxLength(maxLength) format(format) pattern(regex)

number

minimum(minimum) maximum(maximum) exclusiveMinimum(exclusiveMinimum) exclusiveMaximum(exclusiveMaximum) multipleOf(multipleOf)

integer

Same as number.

boolean

No custom boolean options.

nill (null)

No custom null options.

Combining Schemas

allOf

anyOf

oneOf

not