Version 2.0.0 - BREAKING CHANGES. Migration steps

[iparamonau]

Iframely is finally upgraded to the current node versions #344. Due to significant changes in the Node itself, there is sadly no backward compatibility.

The minimum version of the Node required for Iframely starting from version 2.0.0 is Node 12.

The good news is that we used this version in our cloud for a few months now, and it is proved stable.

Here's the migration checklist if you used Iframely with version less than 12:

• Update Node to versions from 12 to 16 (you may also experiment with 17).
• ECMAScript modules are enabled in Node 13+. If you have any custom plugins or custom code for Iframely, you'll likely need to refactor your code to import statements.
• Use import if you plug Iframely as the node module.
• Update your local config file to proper packaging. See config.local.js.EXAMPLE
• If you used proxies, see Is proxy support (almost) gone? #354
• If you use Docker, we need your help. Docker has always been community-contributed, and we'll likely need pull requests to update it.
• Check and verify an upgrade on staging before venturing into production.
• Please post your migration questions below to this issue.

Other significant change in 2.0.0 is the absence of request module, which was deprecated a while ago. We now rely on adobe/helix-fetch module, which we verified as being most production-ready among available alternatives. If you used request variable in your custom plugin methods, you'd need to test them with special attention.

If you used Iframely with Node 12, it is likely that you have had HTTP/2 disabled due to #277. It is now resolved and HTTP/2 is enabled for all deployments. The system feature flag to turn it off is no longer available, but you can configure it as a proxy element.

UPDATE: Proxy is still available, albeit with a simple workaround echo service configured as CONFIG.PROXY_URL. See #354 (and we'll update example config soon)

[iparamonau]

UPDATE: We missed to mention about changes in the proxy support. Proxy is still available, albeit with a simple workaround echo service configured as CONFIG.PROXY_URL. See #354 (and we'll update example config soon)

[diskortsev]

FYI, iframely with pm2 failed to start with node 12 at Debian 11.
Error [ERR_REQUIRE_ESM]: Must use import to load ES Module: /var/www/iframely/server.js

With node 14 it started without any problems.