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39 packages found
A vanilla JavaScript library for checking the type of variables in a more robust and accurate way than the typeof operator
- vanilla javascript
- types
- type
- type checking
- type checking library
- type checking module
- true type checking
- typeof
- typeof library
- typeof module
- typeof checking
- typeOf
- isString
- isNumber
- View more
Type detection beyond `typeof`
- typeof
- getType
- type detection
- isArray
- isAsyncFunction
- isBigInt
- isBlob
- isBoolean
- isCallable
- isCustomElement
- isDate
- isElement
- isElementCollection
- isEmptyObject
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Test if a value is a regular expression string.
- stdlib
- stdassert
- assertion
- assert
- utils
- util
- utilities
- utility
- isregexp
- regular expression
- regexp
- regex
- regular
- expression
- View more
The `util.is*` functions introduced in Node v0.12.
Common JavaScript/TypeScript helper functions for better minification
Test if a value is a regular expression.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- valid
- validate
- regular expression
- regexp
- regex
- is
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Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)
- array
- assert
- assertion
- async
- async function
- async-function
- asyncFunction
- bool
- boolean
- browser
- check
- check-type
- checking
- class
- View more
Small utility to check variable types
- typechecker
- typeverifier
- types
- type
- check
- gettype
- isstring
- isregexp
- isregex
- isobject
- iserror
- isnumber
- isdate
- isarray
- View more
Collection of methods for check
- isArray
- isBoolean
- isDate
- isFunction
- isNull
- isNumber
- isObject
- isString
- isUndefined
- isElement
- isEmpty
- isEmail
- isNaN
- isRegExp
- View more
Test if a value is a regular expression string.
- stdlib
- stdassert
- assertion
- assert
- utils
- util
- utilities
- utility
- isregexp
- regular expression
- regexp
- regex
- regular
- expression
- View more
Simple type checker in JavaScript.
- utils
- util
- type checking
- type checker
- type
- checker
- isAlpha
- isAlphanumeric
- isArguments
- isArray
- isBoolean
- isDate
- isDecimal
- isDefined
- View more
Suite of 43 lightweight utilities designed to maintain a small footprint when bundled, without compromising on ease of integration and use.
- clone
- cloneDeep
- merge
- isEqual
- isStrictEqual
- isMatch
- get
- set
- update
- parsePath
- capitalize
- join
- shuffle
- flatten
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Test if a value is a regular expression string.
- stdlib
- stdassert
- assertion
- assert
- utils
- util
- utilities
- utility
- isregexp
- regular expression
- regexp
- regex
- regular
- expression
- View more
JavaScript library to check data types
- types
- type
- check
- type-check
- type-checker
- typechecker
- isBoolean
- isObject
- isNull
- isDate
- isFunction
- isRegExp
- isArray
- isNumber
- View more
Simple type checker in JavaScript.
- utils
- util
- type checking
- type checker
- type
- checker
- isAlpha
- isAlphanumeric
- isArguments
- isArray
- isBoolean
- isDate
- isDecimal
- isDefined
- View more
The lodash method `_.isRegExp` exported as a module.
TypeScript typeof utility helper with no dependencies.
- typescript
- util
- typeof
- type guards
- isArray
- isBase64
- isBoolean
- isDate
- isDateValid
- isDefined
- isError
- isFunction
- isGuid
- isInfinity
- View more
A very simple "typeof" detection
The `util.is*` functions introduced in Node v0.12.
The `util.is*` functions introduced in Node v0.12. Now with React Native support.