Circular 'typeof' generation on typeof-symbol, spread and modules-amd plugins combination

[jevgenig]

Combination of three plugins, generates circular "_typeof" call

Files used:

.babelrc

{
  "presets": [],
  "plugins": ["transform-es2015-typeof-symbol","transform-es2015-spread","transform-es2015-modules-amd"]
}

test.js

[].push(...1);
typeof 1 === "object";

Executing

babel test.js

Results in generation of JS which contains (Note _typeof(obj) self-call in the end of return):

  function _typeof(obj) {
    return obj && typeof Symbol !== "undefined" && obj.constructor === Symbol 
           ? "symbol" : typeof obj === "undefined" ? "undefined" : _typeof(obj);
  }

Should generate:

  function _typeof(obj) {
    return obj && typeof Symbol !== "undefined" && obj.constructor === Symbol 
           ? "symbol" : typeof obj === "undefined" ? "undefined" : typeof obj;
  }

Versions

babel 6.2.0
babel-core 6.2.1
plugins 6.1.18

If "modules-amd" plugin is excluded, output is as expected

[loganfsmyth]

This is not the right place to report bugs, see our README:

Want to report a bug or request a feature?

Bugs and feature requests should be posted at phabricator.babeljs.io.

This bug is tracked here: https://phabricator.babeljs.io/T6644

[jevgenig]

My bad, many thanks!