babel plugin-transform-typeof-symbol
· This transformer wraps all typeof expressions with a method that replicates native behaviour. (ie. returning “symbol” for symbols)
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window plugin-transform-typeof-symbol-7.22.5.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.