The side attribute determines the side of a path the text is placed on (relative to the path direction).

The function* keyword can be used to define a generator function inside an expression.

The [Symbol.iterator]() method of arguments objects implements the iterable protocol and allows arguments objects to be consumed by most syntaxes expecting iterables, such as the spread syntax and for...of loops. It returns an array iterator object that yields the value of each index in the arguments object.

The JavaScript exception "super() called twice in derived class constructor" occurs when the super() is called a second time for a given derived class constructor.

The length data property of a Function instance indicates the number of parameters expected by the function.

The Number.isNaN() static method determines whether the passed value is the number value NaN, and returns false if the input is not of the Number type. It is a more robust version of the original, global isNaN() function.

The toString() method of Object instances returns a string representing this object. This method is meant to be overridden by derived objects for custom type coercion logic.

The __lookupGetter__() method of Object instances returns the function bound as a getter to the specified property.

The Number.isFinite() static method determines whether the passed value is a finite number — that is, it checks that a given value is a number, and the number is neither positive Infinity, negative Infinity, nor NaN.

The values() method of Map instances returns a new map iterator object that contains the values for each element in this map in insertion order.