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Check if the character represented by a given Unicode code point is fullwidth
Check if a path is a file, directory, or symlink
Get the native type of a value.
Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.
Check if something is a Node.js stream
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
Determines if an object can be used as an array
Is this value an ES BigInt?
Returns true if a string has an extglob.
Check if a file path is a binary file
Returns true if the value is an object and not an array or null.
Check if the process is running inside Windows Subsystem for Linux (Bash on Windows)
Returns true if an object was created by the `Object` constructor, or Object.create(null).
Is this value a JS Typed Array? This module works cross-realm/iframe, does not depend on `instanceof` or mutable properties, and despite ES6 Symbol.toStringTag.
- array
- TypedArray
- typed array
- is
- typed
- Int8Array
- Uint8Array
- Uint8ClampedArray
- Int16Array
- Uint16Array
- Int32Array
- Uint32Array
- Float32Array
- Float64Array
- View more
Returns true if a value is a plain object, array or function.
Returns true if a value has the characteristics of a valid JavaScript descriptor. Works for data descriptors and accessor descriptors.
Is this value a JS regex? Works cross-realm/iframe, and despite ES6 @@toStringTag
Is this value a JS WeakMap? This module works cross-realm/iframe, and despite ES6 @@toStringTag.
Check if a value is an object
Check if the process is running inside a Docker container