What effect does an arrow function have on the 'this' keyword?

An arrow function does not create its own 'this' context; instead, it retains the 'this' value from the lexical scope or surrounding context where it is defined. This behavior is particularly useful when working with methods that need to maintain the correct context of 'this', such as callback functions or event handlers.

For example, if an arrow function is defined inside a regular function, it will use the 'this' value from the enclosing regular function, which is often the intended behavior in JavaScript. This is a significant differentiator from traditional function expressions, which create a new 'this' context.

The notion that arrow functions create a new context, refer to the global object, or cannot reference 'this' does not accurately describe the characteristics of arrow functions in JavaScript. Instead, understanding that arrow functions maintain the existing 'this' context is essential for writing effective and predictable code in environments like Salesforce and beyond.