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type-check allows you to check the types of JavaScript values at runtime with a Haskell like type syntax.
Type check values
Check if something is a Node.js stream
Check if a path is a file, directory, or symlink
Check if a value is an object
Check if a value is a plain object
Check if something is a generator function
Check if something is a promise
Check if a value is a regular expression
unist utility to check if a node passes a test
Check if a string is SVG
Check if a value is an Observable
Check if a Buffer/Uint8Array is a GZIP file
Check if a value is a `Blob`
Check if a Buffer/Uint8Array is a PNG image
Check if a Buffer/Uint8Array is a JPEG image
Check if a Buffer/Uint8Array is a GIF image
Check if a value is a function
Check if a Buffer/Uint8Array is a TAR file
Check the immutability of TypeScript types