babel-plugin-transform-merge-sibling-variables is a Babel plugin designed to optimize JavaScript code by merging declarations of sibling variables. Identical declarators within the same scope are combined, improving code readability and potentially reducing the size of the generated bundle. This transformation enhances code maintainability by streamlining variable declarations, targeting developers seeking cleaner and more efficient output from their Babel compilation process. Especially useful for code generated or heavily transformed by other Babel plugins.