babel-plugin插件制作

最基本的插件制作：

let tips = [
  "Click on any AST node with a '+' to expand it",

  "Hovering over a node highlights the 
   corresponding part in the source code",

  "Shift click on an AST node expands the whole substree"
];

====>

var _tips = "Click on any AST node with a '+' to expand itHovering over a node highlights thecorresponding part in the source codeShift click on an AST node expands the whole substree";