Get the visual width of a string - the number of columns required to display it

Get the visual width of the widest line in a string - the number of columns required to display it

Determine the East Asian Width of a Unicode character

hast utility to check if a node is inter-element whitespace

A fast function for calculating the visual width of a string once printed to the terminal.

A fast function for calculating where a string should be truncated, given an optional width limit and an ellipsis string.

hast utility to check if a node is a (certain) element

Check whether a given string matches the `PotentialCustomElementName` production as defined in the HTML Standard.

get dimensions of any image file

hast utility to check if a node has a property

List of HTML void tag names

Create an array by repeating the given value n times.

Polyfills the ResizeObserver API and supports box size options from the latest spec

List of known MathML tag names

Easily add ANSI colors to your text and symbols in the terminal. A faster drop-in replacement for chalk, kleur and turbocolor (without the dependencies and rendering bugs).

A custom element for extending the native media elements (<audio> or <video>)

A little helper for handling strings containing zero width control characters, ANSI styling, whitespaces, newlines, 💩, etc.

Simplified JS/TS implementation of wcswidth() written by Markus Kuhn in C

Truncate a string to a specific width in the terminal

Look up HTML tag names via HTML Element constructors, and vice versa.