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1375 packages found
Standard assertion utilities.
- stdlib
- stdassert
- assertion
- assert
- expectation
- expect
- utilities
- utility
- utils
- util
- test
- check
- validate
- validation
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Utility types for TypeScript
Type checking utils.
zero dependencies vanilla JavaScript utils.
Test if a value is a collection.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- array
- typed array
- collection
- float64array
- float32array
- int32array
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Test if a double-precision floating-point numeric value is NaN.
- stdlib
- stdmath
- assertion
- assert
- utilities
- utility
- utils
- util
- math
- mathematics
- ieee754
- floating-point
- float
- number
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A simple utility to Check the value is number or can convert to a number, for example string ' 123 ' can be converted to 123.
Test if a value is a string.
Determine the name of a value's constructor.
Test if a value is a number.
Determine the specification defined classification of an object.
- stdlib
- stdutils
- stdutil
- utilities
- utility
- utils
- util
- type
- typeof
- native
- class
- classification
- specification
- spec
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Test if a value is a boolean.
Convert a double-precision floating-point number to the nearest single-precision floating-point number.
Test if a value is a function.
Validation utilities
Test if a value is a plain object.
Determine a value's type.
Test if a double-precision floating-point numeric value is infinite.
- stdlib
- stdmath
- assertion
- assert
- utilities
- utility
- utils
- util
- math
- mathematics
- ieee754
- floating-point
- float
- double
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Test if a value is a Uint8Array.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- uint8array
- uint8
- unsigned
- integer
- int
- uint
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A small tool for validating arguments in JavaScript