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5.0.0-rc.0
5.0.0-rc.0
  • Introduction
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  • Helper
    • recognizeValue()
      • Recognized instances
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  • is
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    • ★ isFalse()
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  • is not
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  • Are
    • areDeterminer()
      • every()
      • forEach()
      • some()
    • areBigInt()
      • every()
      • forEach()
      • some()
    • areBoolean()
      • every()
      • forEach()
      • some()
    • areDate()
      • every()
      • forEach()
      • some()
    • areDefined()
      • every()
      • forEach()
      • some()
    • ★ areFalse()
      • every()
      • forEach()
      • some()
    • areNull()
      • every()
      • forEach()
      • some()
    • ★ areNumber()
      • every()
      • forEach()
      • some()
    • areRegExp()
      • every()
      • forEach()
      • some()
    • ★ areString()
      • every()
      • forEach()
      • some()
    • areSymbol()
      • every()
      • forEach()
      • some()
    • ★ areTrue()
      • every()
      • forEach()
      • some()
    • areUndefined()
      • every()
      • forEach()
      • some()
  • Guard
    • guardArray()
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    • guardBoolean()
    • guardClass()
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    • ★ guardTrue()
    • guardType()
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  • object
    • are: Are {}
    • guard: Guard {}
    • guardIs: GuardIs {}
    • is: Is {}
    • isNot: IsNot {}
    • type {}
  • Interface
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    • AnyBoolean
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    • Constructor
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On this page
  • areTrue()
  • Generic type variables
  • Parameters
  • Returns

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  1. Are

areUndefined()

areTrue()

Checks whether the values are undefined by using every(), forEach() and some() methods of the returned object.

are-undefined.func.ts
const areUndefined = <CommonPayload extends object>(...values: any[]) =>
  areDeterminer<CommonPayload>(isUndefined, ...values);

Generic type variables

CommonPayloadextendsobject

The CommonPayload generic type variable constrained by the object constrains the generic type variable Payload of each returned method.

Parameters

...values: any[]

A rest parameter of any type to check its elements against undefined.

Returns

The return value is an object of every(), some() and forEach() as methods of checking supplied values.

Previoussome()Nextevery()

Last updated 3 years ago

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