IE11 Syntax Error

[andrewlphilpott]

I'm probably just missing something, but I just tried running a new app created with create-inferno-app in IE11 and I'm getting a syntax error. It looks like it’s because of the arrow function in inferno-dev-utils/node_modules/ansi-regex/index.js:

module.exports = () => {
	const pattern = [
		'[\\u001B\\u009B][[\\]()#;?]*(?:(?:(?:[a-zA-Z\\d]*(?:;[a-zA-Z\\d]*)*)?\\u0007)',
		'(?:(?:\\d{1,4}(?:;\\d{0,4})*)?[\\dA-PRZcf-ntqry=><~]))'
	].join('|');

	return new RegExp(pattern, 'g');
};

Do I need to add a polyfill or something to get this to work in IE11?

[Havunen]

hmm, that seems to be third party module, used only in development.

[Havunen]

I guess production build works fine?

[andrewlphilpott]

@Havunen I assume so, but I haven't tried running it yet.

[andrewlphilpott]

@Havunen Yep, the production build is fine. Probably not a huge deal since it's just development but it may make browser testing a little more cumbersome for anybody needing to support IE11 and down.

[Havunen]

Maybe we should refactor that third party out of this library?

[LukeSheard]

@andrewlphilpott I could imagine that it’s due to a webpack config setting that means node modules aren’t processed by Babel in development but are in production.

[farooqkz]

As IE has been obsolete, I think this issue is not valid anymore.

[Havunen]

IE11 is not officially supported anymore.

[farooqkz]

@Havunen You had to close it as invalid