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Check if a path is a file, directory, or symlink
Check if something is a Node.js stream
Check if the character represented by a given Unicode code point is fullwidth
Lint files staged by git
Detect the file type of a file, stream, or data
Type check values
Returns true if a value has the characteristics of a valid JavaScript accessor descriptor.
Returns true if a value has the characteristics of a valid JavaScript descriptor. Works for data descriptors and accessor descriptors.
Returns true if a value has the characteristics of a valid JavaScript data descriptor.
Check if a file path is a binary file
Check if argv has a specific flag
Returns true if a string has an extglob.
Returns `true` if the given string looks like a glob pattern or an extglob pattern. This makes it easy to create code that only uses external modules like node-glob when necessary, resulting in much faster code execution and initialization time, and a bet
Update notifications for your CLI app
A straightforward implementation of base58-check encoding
micromark extension to support GFM task list items
Check if a string matches the name of a Node.js builtin module
Detect whether the terminal supports Unicode
Check if the process is running inside Windows Subsystem for Linux (Bash on Windows)
Function argument validation for humans
- type
- types
- check
- checking
- guard
- guards
- assert
- assertion
- predicate
- predicates
- is
- validate
- validation
- utility
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