Safen

Safen is a top-performing validation and sanitization library with easy type inference.

Description

Super Fast Complex Object Validator for Javascript(& Typescript).

Safen supports the syntax similar to the type script interface. This makes it easy to create complex validation rules.

Monthly Downloads: 0

Programming language: TypeScript

Tags: JSON     Data Validation     Validator     Validation     Jsonschema    

README

Super Fast Object Validatorfor Javascript(& Typescript).

Safen supports the syntax similar to the type script interface. This makes it easy to create validation rules.

• How to use
  • Setup
  • validate method
  • assert method
• Syntax
  • Type Syntax
  • Object Syntax
  • Optional field
  • Nested object
  • Array Syntax
  • Fixed size array
  • Array with minimum size
  • Array with maximum size
  • Sized array
  • Nested array
• Custom Tester
• Custom Error Messages
• Support Validators
  • Type Validations
  • Other Validations
• Comparison
  • Compare with JSON Schema
  • Compare with JOI
• How Safen works
• Examples
• License

1.x

Please check this link for the 1.x version of the README.

How to use

Setup

install,

npm install safen --save

import,

import * as safen from "safen"

// or
const safen = require("safen")

then,

const validator = safen.sfl`{
  username: (string & email & length_between(12, 100)) | null,
  password?: string & length_between(8, 20),
  areas: {
    lat: number & between(-90, 90),
    lng: number & between(-180, 180),
  }[1:] | null,
  env: {
    referer: url,
    ip: ip("v4"),
    os: {
      name: in("window", "osx", "android", "iphone"),
      version: string,
    },
    browser: {
      name: in("chrome", "firefox", "edge", "ie"),
      version: string,
    },
  },
}`

validator.assert({
  username: "[email protected]",
  areas: [
    {lat: 0, lng: 0},
  ],
  env: {
    referer: "http://wan2land.github.io",
    ip: "127.0.0.1",
    os: {
      name: "osx",
      version: "10.13.1",
    },
    browser: {
      name: "chrome",
      version: "62.0.3202.94",
    },
  },
}) // ok

There are two method in Safen, named validate, assert. validate returns boolean and assert throws Exception.

validate method

const validator = safen.sfl<string | null>`(string & email & length_between(12, 100)) | null`

// in javascript,
// const validator = safen.sfl`(string & email & length_between(12, 100)) | null`
// const validator = safen.create(`(string & email & length_between(12, 100)) | null`)

// typescript with Generic
if (validator.validate(data)) {
  // now data is string!
}

validator.validate("[email protected]") // return true
validator.validate(null) // return true

validator.validate("wan2land") // return false, it is not email!

assert method

const validator = safen.sfl<string | null>`(string & email & length_between(12, 100)) | null`

// in javascript,
// const validator = safen.sfl`(string & email & length_between(12, 100)) | null`
// const validator = safen.create(`(string & email & length_between(12, 100)) | null`)

validator.assert("[email protected]") // nothing happens
validator.assert(null) // nothing happens

validator.assert("wan2land") // safen.InvalidValudError occured!

Syntax

Type Syntax

You can easily set the validation by supporting the and, or syntax.

const validator = safen.sfl`{
  username: (string & email & length_between(12, 100)) | null,
}`

validator.assert({
  username: "[email protected]",
}) // ok
validator.assert({
  username: null,
}) // ok

try {
  validator.assert({
    username: "wan2land",
  }) // fail
} catch (e) {
  if (e instanceof safen.InvalidValueError) {
    expect(e.errors).toEqual([
      {
        path: "username",
        reason: "email",
        params: [],
        message: "The username must be a valid email address.",
      },
      {
        path: "username",
        reason: "null",
        params: [],
        message: "The username must be a null.",
      },
    ])
  }
}

Object Syntax

Optional field

The "?" character can be used to define optional field, which allows no key value or undefined for objects.

const validator = safen.sfl`{
  username: string & length_between(4, 20),
  password?: length_between(8, 20),
}`

validator.assert({
  username: "wan2land",
  password: "password!@#",
}) // ok

validator.assert({
  username: "wan2land",
  // undefined password is OK.
}) // ok

validator.assert({
  username: "wan2land",
  password: undefined, // undefined password is also OK.
}) // ok

try {
  validator.assert({
    // undefined username is not ok.
    password: "password!@#",
  }) // fail
} catch (e) {
  if (e instanceof safen.InvalidValueError) {
    expect(e.errors).toEqual([
      {
        path: "username",
        reason: "required",
        params: [],
        message: "The username is required.",
      },
    ])
  }
}

try {
  validator.assert({
    username: "wan2land",
    password: null, // null is not allowed
  }) // fail
} catch (e) {
  if (e instanceof safen.InvalidValueError) {
    expect(e.errors).toEqual([
      {
        path: "password",
        reason: "length",
        params: [],
        message: "The username is required.",
      },
    ])
  }
}

Nested object

Validating nested objects also can be easily done. In addition, the error message makes it easier to check the error path.

const validator = safen.sfl`{
  username: string & length_between(4, 20),
  areas: {
    lat: number & between(-90, 90),
    lng: number & between(-180, 180),
  },
}`

validator.assert({
  username: "wan2land",
  areas: {
    lat: 37,
    lng: 126,
  },
}) // ok

try {
  validator.assert({
    username: "wan2land",
    areas: {
      lat: "37",
      lng: 126,
    },
  }) // fail
} catch (e) {
  if (e instanceof safen.InvalidValueError) {
    expect(e.errors).toEqual([
      {
        path: "areas.lat",
        reason: "number",
        params: [],
        message: "The areas.lat must be a number.",
      },
    ])
  }
}

validator.assert({
  username: "wan2land",
  areas: {
    lat: 37,
    lng: 126,
  },
}) // ok

Array Syntax

Simple array

const validator = safen.sfl`{
  areas: {
    lat: number,
    lng: number,
  }[],
}`

validator.assert({
  areas: [], // empty is OK
}) // ok

validator.assert({
  areas: [
    {lat: 37, lng: 126},
    {lat: 31, lng: 125},
  ],
}) // ok

try {
  validator.assert({
    areas: "",
  }) // fail
} catch (e) {
  if (e instanceof safen.InvalidValueError) {
    expect(e.errors).toEqual([
      {
        path: "areas",
        reason: "array",
        params: [],
        message: "The areas must be an array.",
      },
    ])
  }
}

Fixed size array

const validator = safen.sfl`{
  areas: {
    lat: number,
    lng: number,
  }[2],
}`

validator.assert({
  areas: [
    {lat: 37, lng: 126},
    {lat: 31, lng: 125},
  ],
}) // ok

try {
  validator.assert({
    areas: [
      {lat: 37, lng: 126},
      {lat: 31, lng: 125},
      {lat: 31, lng: 125},
    ],
  }) // fail
} catch (e) {
  if (e instanceof safen.InvalidValueError) {
    expect(e.errors).toEqual([
      {
        path: "areas",
        reason: "array_length",
        params: [2],
        message: "The areas's length must be 2.",
      },
    ])
  }
}

try {
  validator.assert({
    areas: [
      {lat: 37, lng: 126},
    ],
  }) // fail
} catch (e) {
  if (e instanceof safen.InvalidValueError) {
    expect(e.errors).toEqual([
      {
        path: "areas",
        reason: "array_length",
        params: [2],
        message: "The areas's length must be 2.",
      },
    ])
  }
}

Array with minimum size

const validator = safen.sfl`{
  areas: {
    lat: number,
    lng: number,
  }[1:],
}`

validator.assert({
  areas: [
    {lat: 31, lng: 125},
  ],
}) // ok

validator.assert({
  areas: [
    {lat: 37, lng: 126},
    {lat: 31, lng: 125},
  ],
}) // ok

try {
  validator.assert({
    areas: [],
  }) // fail
} catch (e) {
  if (e instanceof safen.InvalidValueError) {
    expect(e.errors).toEqual([
      {
        path: "areas",
        reason: "array_length_min",
        params: [1],
        message: "The areas's length must be at least 1.",
      },
    ])
  }
}

Array with maximum size

const validator = safen.sfl`{
  areas: {
    lat: number,
    lng: number,
  }[:2],
}`

validator.assert({
  areas: [
    {lat: 31, lng: 125},
  ],
}) // ok

validator.assert({
  areas: [
    {lat: 37, lng: 126},
    {lat: 31, lng: 125},
  ],
}) // ok

try {
  validator.assert({
    areas: [
      {lat: 37, lng: 126},
      {lat: 31, lng: 125},
      {lat: 32, lng: 121},
    ],
  }) // fail
} catch (e) {
  if (e instanceof safen.InvalidValueError) {
    expect(e.errors).toEqual([
      {
        path: "areas",
        reason: "array_length_max",
        params: [2],
        message: "The areas's length may not be greater than 2.",
      },
    ])
  }
}

Sized array

const validator = safen.sfl`{
  areas: {
    lat: number,
    lng: number,
  }[1:2],
}`

validator.assert({
  areas: [
    {lat: 31, lng: 125},
  ],
}) // ok

validator.assert({
  areas: [
    {lat: 37, lng: 126},
    {lat: 31, lng: 125},
  ],
}) // ok

try {
  validator.assert({
    areas: [],
  }) // fail
} catch (e) {
  if (e instanceof safen.InvalidValueError) {
    expect(e.errors).toEqual([
      {
        path: "areas",
        reason: "array_length_between",
        params: [1, 2],
        message: "The areas's length must be between 1 and 2.",
      },
    ])
  }
}

try {
  validator.assert({
    areas: [
      {lat: 37, lng: 126},
      {lat: 31, lng: 125},
      {lat: 32, lng: 121},
    ],
  }) // fail
} catch (e) {
  if (e instanceof safen.InvalidValueError) {
    expect(e.errors).toEqual([
      {
        path: "areas",
        reason: "array_length_between",
        params: [1, 2],
        message: "The areas's length must be between 1 and 2.",
      },
    ])
  }
}

Nested array

const validator = safen.sfl`{
  areas: {
    lat: number,
    lng: number,
  }[][],
}`

validator.assert({
  areas: [
    [
      {lat: 37, lng: 126},
      {lat: 31, lng: 125},
    ],
    [
      {lat: 37, lng: 126},
      {lat: 31, lng: 125},
    ],
  ],
}) // ok

try {
  validator.assert({
    areas: [
      {lat: 37, lng: 126},
      {lat: 31, lng: 125},
    ],
  }) // fail
} catch (e) {
  if (e instanceof safen.InvalidValueError) {
    expect(e.errors).toEqual([
      {
        path: "areas[0]",
        reason: "array",
        params: [],
        message: "The areas[0] must be an array.",
      },
      {
        path: "areas[1]",
        reason: "array",
        params: [],
        message: "The areas[1] must be an array.",
      },
    ])
  }
}

Custom Tester

Custom tester is written in template format like below:

const oddTester: safen.Tester = (value, params, gen) => {
  return `(Number.isInteger(${value}) && ${value} % 2 === 1)`
}

const evenTester: safen.Tester = (value, params, gen) => {
  return `(Number.isInteger(${value}) && ${value} % 2 === 0)`
}

const validation = safen.create(`{
  even: even,
  odd: odd,
}`, {
  testers: {
    odd: oddTester,
    even: evenTester,
  },
})

expect(validation.validate({even: 2, odd: 1})).toBeTruthy()

expect(validation.validate({even: 1, odd: 1})).toBeFalsy()
expect(validation.validate({even: 2, odd: 2})).toBeFalsy()
expect(validation.validate({even: 1, odd: 2})).toBeFalsy()

A more complex example is:

• example of params and gen: [before tester](./src/testers/before.ts)

Custom Error Messages

If needed, you can add custom error messages.

const validator = safen.create(`{
  username: email,
}`, {
  messages: {
    email: [
      "this is a custom error message in :path.", // exist `:path`
      "this is a custom error message.", // no `:path`
    ],
  },
})

try {
  validator.assert({
    username: "wan2land",
  }) // fail
} catch (e) {
  if (e instanceof safen.InvalidValueError) {
    expect(e.errors).toEqual([
      {
        path: "username",
        reason: "email",
        params: [],
        message: "this is a custom error message in username.",
      },
    ])
  }
}

The :params will be replaced by field name. For example :

const validator = safen.create(`{
  foo: email,
  bar: between(1, 2),
  baz: in("a", "b", "c"),
}`, {
  messages: {
    required: ["The :path is required.", "It is required."],
    between: ["The :path must be between :param0 and :param1.", "It must be between :param0 and :param1."],
    in: ["The :path does not exist in :params.", "It does not exist in :params."],
  },
})

try {
  validator.assert({
    // foo
    bar: 4,
    baz: "d",
  })
} catch (e) {
  if (e instanceof safen.InvalidValueError) {
    expect(e.errors).toEqual([
      {path: "foo", reason: "required", params: [], message: "The foo is required."},
      {path: "bar", reason: "between", params: [1, 2], message: "The bar must be between 1 and 2."},
      {path: "baz", reason: "in", params: ["a", "b", "c"], message: "The baz does not exist in [\"a\",\"b\",\"c\"]."},
    ])
  }
}

Support Validators

Type Validations

Validator	Description
bool	check if it is a boolean(alias to boolean).
boolean	check if it is a boolean.
false	check if it is a false.
float	check if it is a float(alias to number).
int	check if it is a integer(alias to integer).
integer	check if it is a integer.
number	check if it is a number.
null	check if it is a null.
object	check if it is a object.
string	check if it is a string.
symbol	check if it is a symbol.
true	check if it is a true.

Other Validations

Validator	Description	Example
after({date = now})	check if string is a date and is after than specified date.	after, after("2017-10-01"), after("2017-10-01 14:30:00")
alpha	check if string contains only letters([a-zA-Z]).	alpha
alphanum	check if string contains only letters and numbers([a-zA-Z0-9])	alphanum
always_false	return always false, for debugging.	always_false
always_true	return always true, for debugging.	always_true
any	return always true.	any
ascii	check if string contains only ascii characters.	ascii
base64	check if string is Base64.	base64
before({date = now})	check if string is a date that's before the specified date.	before("2017-10-01"), before("2017-10-01 14:30:00")
between({min},{max})	check if value(string, number) is between {min} and {max}.	between("aaa","zzz"), between(1,100)
creditcard	check if string is valid Credit Card number. cf. 0000-0000-0000-0000	creditcard
date	check if string is valid Date string(RFC2822, ISO8601). cf. 2018-12-25, 12/25/2018, Dec 25, 2018	date
email	check if string is valid E-mail string.	email
finite	check if number is not NaN, Infinity, -Infinity.	finite
hexcolor	check if string is valid Hex Color string. cf. #ffffff	hexcolor
in({...params})	check if value(any) is in an array {params}.	in(1,2,3), in("safari","edge","firefox","other browser")
ip({version = all})	check if string is valid UUID.version is one of all(default), v4, and v6.	ip, ip("v4"), ip("v6")
json	check if string is valid JSON.	json
jwt	check if string is valid JWT.	jwt
length({size})	check if value(string)'s length is {size}.	length(16)
length_between({min},{max})	check if value(string)'s length is between {min} and {max}.	length_between(4,20)
length_max({max})	check if value(string)'s length is less than {max}.	length_max(20)
length_min({min})	check if value(string)'s length is greater than {min}.	length_min(4)
lowercase	check if string is lowercase.	lowercase
macaddress	check if string is valid Mac Address.	macaddress
max({max})	check if value(string, number) is less than {min}.	max(5)
min({min})	check if value(string, number) is greater than {max}.	min(3)
nan	check if value(any) is NaN.	nan
re	check if value(any) match RegExp(alias to regexp).	re(/.+/)
regex	check if value(any) match RegExp(alias to regexp).	regex(/.+/)
regexp	check if value(any) match RegExp.	regexp(/.+/)
port	check if string is valid PORT(0-65535).	port
uppercase	check if string is uppercase.	uppercase
url	check if string is valid URL.	url
uuid({version = all})	check if string is valid UUID.version is one of all(default), v3, v4, and v5.	uuid, uuid("v3"), uuid("v4"), uuid("v5")

Comparison

Using another library? Safen is lot easier to use.

{
  username: (string & email & length_between(12, 100)) | null,
  password?: string & length_between(8, 20),
  areas: {
    lat: number & between(-90, 90),
    lng: number & between(-180, 180),
  }[1:] | null,
  env: {
    referer: url,
    ip: ip("v4"),
    os: {
      name: in("window", "osx", "android", "iphone"),
      version: string,
    },
    browser: {
      name: in("chrome", "firefox", "edge", "ie"),
      version: string,
    },
  },
}

Compare with JSON Schema

Show JSON Schema Source

{
  "definitions": {},
  "$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "required": [
    "username",
    "areas",
    "env"
  ],
  "properties": {
    "username": {
      "type": ["string", "null"],
      "format": "email",
      "minLength": 12,
      "maxLength": 100
    },
    "password": {
      "type": "string",
      "minLength": 8,
      "maxLength": 20
    },
    "areas": {
      "type": ["array", "null"],
      "items": {
        "type": "object",
        "required": [
          "lat",
          "lng"
        ],
        "properties": {
          "lat": {
            "type": "integer",
            "minimum": -90,
            "maximum": 90
          },
          "lng": {
            "type": "integer",
            "minimum": -180,
            "maximum": 180
          }
        }
      }
    },
    "env": {
      "type": "object",
      "required": [
        "referer",
        "ip",
        "os",
        "browser"
      ],
      "properties": {
        "referer": {
          "type": "string",
          "format": "uri"
        },
        "ip": {
          "type": "string",
          "format": "ipv4"
        },
        "os": {
          "type": "object",
          "required": [
            "name",
            "version"
          ],
          "properties": {
            "name": {
              "type": "string",
              "enum": ["window", "osx", "android", "iphone"],
            },
            "version": {
              "type": "string",
              "pattern": "^(.*)$"
            }
          }
        },
        "browser": {
          "type": "object",
          "required": [
            "name",
            "version"
          ],
          "properties": {
            "name": {
              "type": "string",
              "enum": ["chrome", "firefox", "edge", "ie"],
            },
            "version": {
              "type": "string",
              "pattern": "^(.*)$"
            }
          }
        }
      }
    }
  }
}

Compare with JOI

JOI is the most popular object schema validation library.

Show JOI Source

Joi.object().keys({
  username: Joi.string().required().allow(null).email().min(12).max(100),
  password: Joi.string().min(8).max(20),
  areas: Joi.array().required().allow(null).min(1).items(Joi.object().keys({
    lat: Joi.number().required().min(-90).max(90),
    lng: Joi.number().required().min(-180).max(180),
  })),
  env: Joi.object().required().keys({
    referer: Joi.string().uri().required(),
    ip: Joi.string().required().ip({version: ["ipv4"]}),
    os: Joi.object().required().keys({
      name: Joi.any().required().only("window", "osx", "android", "iphone"),
      version: Joi.string().required(),
    }),
    browser: Joi.object().required().keys({
      name: Joi.any().required().only("chrome", "firefox", "edge", "ie"),
      version: Joi.string().required(),
    }),
  }),
})

How Safen works

Safen parses the grammar and internally generates an AST(Abstract Syntax Tree) similar to the Json Schema.

{
  username: (string & email) | null,
  areas: {
    lat?: number & between(-90, 90),
    lng?: number & between(-180, 180),
  }[1]
}

The generated AST is as follows:

Show AST

{
  "type": "object",
  "properties": {
    "username": {
      "optional": false,
      "value": {
        "type": "or",
        "params": [
          {
            "type": "and",
            "params": [
              {
                "type": "scalar",
                "name": "string",
                "params": []
              },
              {
                "type": "scalar",
                "name": "email",
                "params": []
              }
            ]
          },
          {
            "type": "scalar",
            "name": "null",
            "params": []
          }
        ]
      }
    },
    "areas": {
      "optional": false,
      "value": {
        "type": "array",
        "min": 1,
        "max": 1,
        "value": {
          "type": "object",
          "properties": {
            "lat": {
              "optional": true,
              "value": {
                "type": "and",
                "params": [
                  {
                    "type": "scalar",
                    "name": "number",
                    "params": []
                  },
                  {
                    "type": "scalar",
                    "name": "between",
                    "params": [
                      -90,
                      90
                    ]
                  }
                ]
              }
            },
            "lng": {
              "optional": true,
              "value": {
                "type": "and",
                "params": [
                  {
                    "type": "scalar",
                    "name": "number",
                    "params": []
                  },
                  {
                    "type": "scalar",
                    "name": "between",
                    "params": [
                      -180,
                      180
                    ]
                  }
                ]
              }
            }
          }
        }
      }
    }
  }
}

Safen generates native validate and assert functions based on AST, which make safen lightning fast.

Native validate function sample:

Show generated validate function.

function(v) {
  return (function() {
    if (typeof v !== "object" || v === null) {
      return false
    }
    if (typeof v.username === "undefined") {
      return false
    }
    if (!((((typeof(v.username) === "string") && /^(([^<>()[\]\\.,;:\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,}))$/.test(v.username)) || v.username === null))) {
      return false
    }
    if (typeof v.areas === "undefined") {
      return false
    }
    if (!((function() {
        if (!Array.isArray(v.areas) || v.areas.length < 1 || v.areas.length > 1) {
          return false
        }
        for (var t0 = 0; t0 < v.areas.length; t0++) {
          if (!((function() {
              if (typeof v.areas[t0] !== "object" || v.areas[t0] === null) {
                return false
              }
              if (typeof v.areas[t0].lat !== "undefined") {
                if (!(((typeof(v.areas[t0].lat) === "number") && (v.areas[t0].lat >= -90 && v.areas[t0].lat <= 90)))) {
                  return false
                }
              }
              if (typeof v.areas[t0].lng !== "undefined") {
                if (!(((typeof(v.areas[t0].lng) === "number") && (v.areas[t0].lng >= -180 && v.areas[t0].lng <= 180)))) {
                  return false
                }
              };
              return true
            })())) {
            return false
          }
        }
        return true
      })())) {
      return false
    };
    return true
  })()
}

Native assert function sample:

Show generated assert function.

function (v) {
  var path = [];
  var errors = (function() {
    var t0 = [];
    if (typeof v !== "object" || v === null) {
      return [{
        message: message(path.join("").replace(/^\./, ""), "object", []),
        path: path.join("").replace(/^\./, ""),
        reason: "object",
        params: []
      }]
    }
    path.push(".username");
    if (typeof v.username !== "undefined") {
      t0 = t0.concat((function() {
        var t1 = [],
          t2 = (function() {
            var t3 = (function() {
              if (!((typeof(v.username) === "string"))) {
                return [{
                  message: message(path.join("").replace(/^\./, ""), "string", []),
                  path: path.join("").replace(/^\./, ""),
                  reason: "string",
                  params: []
                }]
              }
              return []
            })();
            if (t3.length) {
              return t3
            }
            t3 = (function() {
              if (!(/^(([^<>()[\]\\.,;:\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,}))$/.test(v.username))) {
                return [{
                  message: message(path.join("").replace(/^\./, ""), "email", []),
                  path: path.join("").replace(/^\./, ""),
                  reason: "email",
                  params: []
                }]
              }
              return []
            })();
            if (t3.length) {
              return t3
            }
            return []
          })();
        if (t2.length === 0) {
          return []
        }
        t1 = t1.concat(t2);
        t2 = (function() {
          if (!(v.username === null)) {
            return [{
              message: message(path.join("").replace(/^\./, ""), "null", []),
              path: path.join("").replace(/^\./, ""),
              reason: "null",
              params: []
            }]
          }
          return []
        })();
        if (t2.length === 0) {
          return []
        }
        t1 = t1.concat(t2);
        return t1
      })())
    } else {
      t0.push({
        message: message(path.join("").replace(/^\./, ""), "required", []),
        path: path.join("").replace(/^\./, ""),
        reason: "required",
        params: []
      })
    }
    path.pop();
    path.push(".areas");
    if (typeof v.areas !== "undefined") {
      t0 = t0.concat((function() {
        if (!Array.isArray(v.areas)) {
          return [{
            message: message(path.join("").replace(/^\./, ""), "array", []),
            path: path.join("").replace(/^\./, ""),
            reason: "array",
            params: []
          }]
        }
        if (v.areas.length !== 1) {
          return [{
            message: message(path.join("").replace(/^\./, ""), "array_length", [1]),
            path: path.join("").replace(/^\./, ""),
            reason: "array_length",
            params: [1]
          }]
        }
        var t4 = [];
        for (var t5 = 0; t5 < v.areas.length; t5++) {
          path.push("[" + t5 + "]");
          t4 = t4.concat((function() {
            var t6 = [];
            if (typeof v.areas[t5] !== "object" || v.areas[t5] === null) {
              return [{
                message: message(path.join("").replace(/^\./, ""), "object", []),
                path: path.join("").replace(/^\./, ""),
                reason: "object",
                params: []
              }]
            }
            path.push(".lat");
            if (typeof v.areas[t5].lat !== "undefined") {
              t6 = t6.concat((function() {
                var t7 = (function() {
                  if (!((typeof(v.areas[t5].lat) === "number"))) {
                    return [{
                      message: message(path.join("").replace(/^\./, ""), "number", []),
                      path: path.join("").replace(/^\./, ""),
                      reason: "number",
                      params: []
                    }]
                  }
                  return []
                })();
                if (t7.length) {
                  return t7
                }
                t7 = (function() {
                  if (!((v.areas[t5].lat >= -90 && v.areas[t5].lat <= 90))) {
                    return [{
                      message: message(path.join("").replace(/^\./, ""), "between", [-90, 90]),
                      path: path.join("").replace(/^\./, ""),
                      reason: "between",
                      params: [-90, 90]
                    }]
                  }
                  return []
                })();
                if (t7.length) {
                  return t7
                }
                return []
              })())
            }
            path.pop();
            path.push(".lng");
            if (typeof v.areas[t5].lng !== "undefined") {
              t6 = t6.concat((function() {
                var t8 = (function() {
                  if (!((typeof(v.areas[t5].lng) === "number"))) {
                    return [{
                      message: message(path.join("").replace(/^\./, ""), "number", []),
                      path: path.join("").replace(/^\./, ""),
                      reason: "number",
                      params: []
                    }]
                  }
                  return []
                })();
                if (t8.length) {
                  return t8
                }
                t8 = (function() {
                  if (!((v.areas[t5].lng >= -180 && v.areas[t5].lng <= 180))) {
                    return [{
                      message: message(path.join("").replace(/^\./, ""), "between", [-180, 180]),
                      path: path.join("").replace(/^\./, ""),
                      reason: "between",
                      params: [-180, 180]
                    }]
                  }
                  return []
                })();
                if (t8.length) {
                  return t8
                }
                return []
              })())
            }
            path.pop();
            return t6
          })());
          path.pop()
        }
        return t4
      })())
    } else {
      t0.push({
        message: message(path.join("").replace(/^\./, ""), "required", []),
        path: path.join("").replace(/^\./, ""),
        reason: "required",
        params: []
      })
    }
    path.pop();
    return t0
  })();
  if (errors.length) throw new InvalidValueError(errors)
}

Examples

• [with express](./examples/with-express)
• [with axios](./examples/with-axios)

License

MIT