jscodeshift decorate autobind

decorate-class-autobind.js

export default (file, api) => {
  const j = api.jscodeshift
  const root = j(file.source)

  if (root.find(j.ExportDefaultDeclaration).get().value.declaration.decorators.map(n => n.expression.name).indexOf("autobind") >= 0) { return null }
  root.get().value.program.body.splice(1, 0, j.importDeclaration([j.importSpecifier(j.identifier('autobind'))], j.literal('core-decorators')))
  root.find(j.ExportDefaultDeclaration).get().value.declaration.decorators.push(j.decorator(j.identifier('autobind')))
  return root.toSource()
}