Safari errors in -prod mode, but not in Safari Technology preview and Chrome.

[ghost]

I'm using ember-cli 2.13.3 and ember-cli-babili.

When I launch ember serve everything is ok in both Safari latest and Safari Technology preview and Chrome.

But in production mode with: ember serve -prod Safari latest tells me this:

SyntaxError: Cannot declare a let variable twice: 'r'.
ReferenceError: Can't find variable: define

For Safari Technology preview and Chrome everything OK.

My ember-cli config > target.js is the default one:

module.exports = {
  browsers: [
    'ie 9',
    'last 1 Chrome versions',
    'last 1 Firefox versions',
    'last 1 Safari versions'
  ]
};

I tried also with:

module.exports = {
  browsers: [
    'last 2 Chrome versions',
    'last 2 Firefox versions',
    'last 1 Safari versions',
    'last 1 Edge versions'
  ]
};

or

module.exports = {
  browsers: [
    'last 2 Chrome versions',
    'last 2 Firefox versions',
    'last 2 Safari versions',
    'last 2 Edge versions'
  ]
};

[ghost]

Same issue. I confirm.

With 0.1.4 Safari on iPad 10.3.2 come back to work.

ember-cli-babili 0.2.0 is the problem.

[ghost]

Maybe related to https://github.com/glimmerjs/glimmer-blueprint/issues/58