@0y0/type ·

Type checking utils.

Installation

npm install @0y0/type --save

Usage

const t = require('@0y0/type')

const objConstraint = t.object.is({
  num: t.number.gte(0).required,
  str: t.string.match(/\d+/).required
}).required

const result = objConstraint.validate({ num: 1, str: '1' })
// result = { valid: true, errors: [] }

const result = objConstraint.validate({ num: 0, str: '1' })
// result = {
//  valid: false,
//  errors: [{ name: 'num', expected: 'gte(0)', actual: 0 }]
// }

Built-in constraints

• bool
  • bool.required
  • bool.truthy
  • bool.falsy
• number
  • number.required
  • number.eq(<number>)
  • number.neq(<number>)
  • number.gt(<number>)
  • number.gte(<number>)
  • number.lt(<number>)
  • number.lte(<number>)
• decimal
  • decimal.required
  • decimal.eq(<number|string>)
  • decimal.neq(<number|string>)
  • decimal.gt(<number|string>)
  • decimal.gte(<number|string>)
  • decimal.lt(<number|string>)
  • decimal.lte(<number|string>)
• string
  • string.required
  • string.lenEq(<number>)
  • string.empty
  • string.notEmpty
  • string.match(<regexp>)
• time
  • time.required
  • time.eq(<number|string|Date>)
  • time.neq(<number|string|Date>)
  • time.gt(<number|string|Date>)
  • time.gte(<number|string|Date>)
  • time.lt(<number|string|Date>)
  • time.lte(<number|string|Date>)
• array
  • array.required
  • array.lenEq(<number>)
  • array.empty
  • array.notEmpty
  • array.of(<itemConstraint>)
  • array.is([<itemConstraint>, ...])
• object
  • object.required
  • object.eq(<object>)
  • object.match(<object>)
  • object.is({ key: <constraint>, ... })
  • object.like({ key: <constraint>, ... })
• nil
• eq(<any>)
  • eq(<any>).required
• neq(<any>)
  • neq(<any>).required
• oneOf([<any>, ...])
  • oneOf([<any>, ...]).required
• valueOf({ key: <any>, ... })
  • valueOf({ key: <any>, ... }).required
• use
  • use(({ parent, value }) => constraint).required

License

MIT