Check if a string is HTML
MIT License
List of standard HTML tags
Check if a string is a URL
Check if a value is a Blob
Check whether a string has any emoji
Check if a string matches the name of a Node.js builtin module
Check if a string or buffer is SVG
Check if a URL is absolute
Check if a URL is relative
Check if a value is an object
Check whether a website is up or down
Check whether a file can be executed
Check if a JavaScript environment has a DOM
Detect the dominant newline character of a string
Check if something is a generator function
Check if a file path is a text file