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2837 packages found
Returns true if the value is a number. comprehensive tests.Study from jonschlinkert/is-number
Check if a value is valid ORCID or not
Test if a value is a regular expression string.
- stdlib
- stdassert
- assertion
- assert
- utils
- util
- utilities
- utility
- isregexp
- regular expression
- regexp
- regex
- regular
- expression
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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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Base mathematical assertion utilities.
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- ponyfill
- command
- iterator
- ArrayBuffer#slice
- enumerable
- formatting
- banner
- multi-package
- telephone
- utils
- Iterator
- watcher
- Array.prototype.contains
- chromium
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Test if a value is a number having a negative integer value.
This library will help to assert the parameters, instances, classes, functions, primitive/non-primitive types
Test if an input value is a supported array data type.
Test if an input value is a supported array integer data type.
Test if an input value is a supported array floating-point data type.
Ensure a function is stable, meaning the same input always produces the same output
Test if an input value is a supported array numeric data type.
Checks if a given function is deprecated.
Test if a value is an even number.
Test if a value is iterable-like.
Test if a value is a SharedArrayBuffer.
- stdlib
- stdassert
- assertion
- assert
- utilities
- utility
- utils
- util
- arraybuffer
- shared
- array
- buffer
- typed
- typed array
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A package that helps validate data at runtime
Boolean indicating if the current process is running on Darwin.