Stimulus

The Stimulus filter makes it easier to build Stimulus controllers.

When a class definition is encountered that derives from Stimulus::Controller, the following transformations are applied:

• an import statement for Stimulus will be generated if the esm filter is also applied.

• initialize methods are not mapped to constructors.

• All methods are generated as JavaScript methods, not getters. This ensures proper this.methodName() call semantics when methods call each other within the controller. Exception: methods that override an attr_reader or attr_accessor remain getters to preserve property accessor semantics.

• Unqualified references to application and element are prefixed with this.. As will each of the identifiers mentioned in the next three bullets.

• If any of the following are found, “x” will be addded to the list of static targets if not already present: xTarget, xTargets, hasXTarget.

• If any of the following are found, “x” will be addded to the list of static values with a type of String if not already present: xValue, xValue=, hasXValue.

• If any of the following are found, “x” will be addded to the list of static classes if not already present: xClass, hasXClass.

For more information, see the examples provided.