Modify strings, generate sourcemaps

Escape RegExp special characters

Insert supplied variable values into a format string.

String manipulation functions.

Test if a value is a string.

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

Lumino Algorithms and Iterators

Repeat the given string n times. Fastest implementation for repeating a string.

Internationalized string formatting and locale negotiation

Is this value a JS String object or primitive? This module works cross-realm/iframe, and despite ES6 @@toStringTag.