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Check if something is a promise
Verify if something is a Promise
Is this a bluebird promise I see before me?
Check if a path is a file, directory, or symlink
Check if a value is an Observable
Check if a local or remote port is reachable
Isomorphic, functional type-checking for Javascript
Get the native type of a value.
Check if something is a Node.js stream
Check if the character represented by a given Unicode code point is fullwidth
Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.
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
Returns true if the value is an object and not an array or null.
Determines if an object can be used as an array
Returns true if a value is a plain object, array or function.
Returns true if a string has an extglob.
Check if the process is running inside Windows Subsystem for Linux (Bash on Windows)
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 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 an object was created by the `Object` constructor, or Object.create(null).