Lightning Core > 2.11.0 Unsupported on older browsers

[SemHelevenAndrome]

Hi,
while updating the lng core and sdk to the latest versions (2.13.1 and 5.5.3) We noticed that Lightning crashes on older browsers. We would like to support Samsung 2017 tvs and LG 2017 tvs. These use a chromium browser v47 and v38 respectively. When using lng dev, there seems to be error in the startApp.js file, where:

var url = new URL(document.location.href);
resolve(url.searchParams.has('texture'));

url.searchParams is supported from chrome 51.

When changing this to resolve true (for testing), we get a different error where bundle is undefined.

This seems to be the case even when using core v2.12.0. This did work on core v2.11.0 (currently in use). This would prevent us from updating our lng core. Which is not ideal.
Can these older browser stay supported? Thanks in advance.

Kind regards
Sem

[elsassph]

We do that: https://www.npmjs.com/package/url-polyfill

[SemHelevenAndrome]

I just tried with an minimal app. So only lng create and then lng dist --es5. And it gives some strange errors on chrome 37.

On latest sdk with corresponding core version it does not work. On sdk 5.5.1 with core 2.12.1 it does not work. On lower (sdk 5.5.0 and core 2.11.0) it all works perfectly. Can this backwards compatibility be fixed or will this no longer be supported?

[SemHelevenAndrome]

Any update on this? It seems that the compiled lng core does not support these older browsers. And should be transpiled/ build to support these older browsers. To me it does not seem possible to rebuild this node module when building the lng app, using lng dist.

[SemHelevenAndrome]

Hi, I have narrowed it down to this commit: e52364a from @frank-weindel. From this commit, the es5 build no longer works due to the unexpected strict mode reserved word, on older browser (Chrome 38). Can I get some help because I don't understand why it has stopped working. Many thanks in advance.