index.js

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var helperPluginUtils = require('@babel/helper-plugin-utils');

function shouldTransform(path) {
  const {
    node
  } = path;
  const functionId = node.id;
  if (!functionId) return false;
  const name = functionId.name;
  const paramNameBinding = path.scope.getOwnBinding(name);

  if (paramNameBinding === undefined) {
    return false;
  }

  if (paramNameBinding.kind !== "param") {
    return false;
  }

  if (paramNameBinding.identifier === paramNameBinding.path.node) {
    return false;
  }

  return name;
}

var index = helperPluginUtils.declare(api => {
  api.assertVersion("^7.16.0");
  return {
    name: "plugin-bugfix-safari-id-destructuring-collision-in-function-expression",
    visitor: {
      FunctionExpression(path) {
        const name = shouldTransform(path);

        if (name) {
          const {
            scope
          } = path;
          const newParamName = scope.generateUid(name);
          scope.rename(name, newParamName);
        }
      }

    }
  };
});

exports["default"] = index;
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