Returns true if any values exist, false if empty. Works for booleans, functions, numbers, strings, nulls, objects and arrays.
Core istanbul API for JS code coverage
A dictionary of file extensions and associated module loaders.
Is this an arguments object? It's a harder question than you think.
transpile js to other languages
Array-slice method. Slices `array` from the `start` index up to, but not including, the `end` index.
Use the :focus-visible pseudo-selector in CSS
Style elements relative to other elements in CSS
Style form elements when they are empty
Like `extend` but only copies missing properties/values to the target object.