Junctions-fp

Relations

between

between( min , max, value, strict ) > Boolean

test if value is between min and max value. strict param test > and < . By dafault strict = false

between(5, 10, 8) //return true
between(5, 10, 10) //return true
between(5, 10, 11) //return false
between(5, 10, 10, true) //return false
between(5, 10, 5, true) //return false

defined

defined( value ) > Boolean

detect if a value is defined.

const x = 42
const y = 'Gandalf'
const z = { name: 'dragon', attack: 10 }
const isNull = null
const isUndefined = undefined
const stringEmpty = ''
defined(x) //return true
defined(y) //return true
defined(z) //return true
defined(isNull) //return false
defined(stringEmpty) //return false
defined(isUndefined) //return false

equal

equal( value1, value2 ) > Boolean

test deep equal between value1 and value2, return true if strict equality

const x = 42
equal(x, 42) //return true
equal(x, 43) //return false

const y = 'Gandalf'
equal(y, 'Gandalf') //return true
equal(y, 'gandalf') //return false

const z = { name: 'dragon', attack: 10 }
equal(z, { name: 'dragon', attack: 10 }) //return true
equal(z, { name: 'dragon', attack: 5 }) //return false

gt

gt( limit, value ) > Boolean

Test value greater strict than limit

gt(10, 9) //return false
gt(10, 11) //return true
const limit = gt(5)
limit(10) //return true
limit(5) //return false

gte

gte( limit, value ) > Boolean

Test value greater or equal than limit

gte(10, 9) //return false
gte(10, 11) //return true
const limit = gte(5)
limit(10) //return true
limit(5) //return true

is

is( type, value ) > Boolean

test if value is typeof type

const x = [42]
is('array', x) //return true
is('array', { name: 'Gandalf' }) //return false

isInt

isInt( value ) > Boolean

Is alias to test int value

const x = 42
isInt(x) //return true
isInt(42.5) //return false

isNumber

isNumber( value ) > Boolean

Is alias to test number value

const x = 42
isNumber(x) //return true
isNumber(42.5) //return true
isNumber('42') //return false

isString

isString( value ) > Boolean

Is alias to test string value

const x = 42
isString(x) //return false
isString(42.5) //return false
isString('42') //return true

lt

lt( limit, value ) > Boolean

Test value less strict than limit

lt(10, 9) //return true
lt(10, 11) //return false
const limit = lt(5)
limit(4) //return true
limit(5) //return false

lte

lte( limit, value ) > Boolean

Test value less or equal than limit

lte(10, 9) //return true
lte(10, 11) //return false
const limit = lte(5)
limit(5) //return true
limit(4) //return true

← String →