The left shift assignment (<<=) operator performs left shift on the two operands and assigns the result to the left operand.

The diffuseConstant attribute represents the kd value in the Phong lighting model. In SVG, this can be any non-negative number.

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 subtraction (-) operator subtracts the two operands, producing their difference.

The Reflect.set() static method is like the property accessor and assignment syntax, but as a function.

The Reflect.deleteProperty() static method is like the delete operator, but as a function. It deletes a property from an object.

The handler.construct() method is a trap for the [[Construct]] object internal method, which is used by operations such as the new operator. In order for the new operation to be valid on the resulting Proxy object, the target used to initialize the proxy must itself be a valid constructor.

The Reflect.setPrototypeOf() static method is like Object.setPrototypeOf() but returns a Boolean. It sets the prototype (i.e., the internal [[Prototype]] property) of a specified object.

The pop() method of Array instances removes the last element from an array and returns that element. This method changes the length of the array.

The handler.get() method is a trap for the [[Get]] object internal method, which is used by operations such as property accessors.