Plugins

  • Plugins can contain 2 parts:

    • attacher: function that is invoked when someone calls .use()
    • transformer: optional function invoked each time a file is processed with an AST and a virtual file.
  • in order to traverse the tree, we can use the utility "units-until-visit" which finds whatever you pass match with a node, this way we can run a function for each node that matches the condition.

  • "units-until-is" help us check node types

  • in order to send a message/warning/whatever, we can use "file.message()" to associate a message with the file

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