The formatToParts() method of Intl.DateTimeFormat instances allows locale-aware formatting of strings produced by this Intl.DateTimeFormat object.

The [@@matchAll]() method of RegExp instances specifies how String.prototype.matchAll should behave.

The Promise.resolve() static method "resolves" a given value to a Promise. If the value is a promise, that promise is returned; if the value is a thenable, Promise.resolve() will call the then() method with two callbacks it prepared; otherwise the returned promise will be fulfilled with the value.

The arguments.length data property contains the number of arguments passed to the function.

The nullish coalescing (??) operator is a logical operator that returns its right-hand side operand when its left-hand side operand is null or undefined, and otherwise returns its left-hand side operand.

The static import declaration is used to import read-only live bindings which are exported by another module. The imported bindings are called live bindings because they are updated by the module that exported the binding, but cannot be re-assigned by the importing module.

The origin attribute specifies the origin of motion for an animation. It has no effect in SVG.

The overflow attribute sets what to do when an element's content is too big to fit in its block formatting context. This feature is not widely implemented yet.

The greater than or equal (>=) operator returns true if the left operand is greater than or equal to the right operand, and false otherwise.

A wildcard matches all characters except line terminators. It also matches line terminators if the s flag is set.