Migrating from 3.x to 4.x

[ChitraKrishnan]

Hi,

Our current application that uses Arcgis javascript API 3.x is built on dojo framework. Now we are planning to migrate to 4.x. Can we just insert the 4.x CDN link and continue with the dojo framework?

Thanks

Chitra

[SteveCole · Accepted solution]

No, unfortunately, app migration from 3.x to 4.x will be a more involved process than just updating the CDN path. ESRI has a page in its 4.x documentation that talks about migrating (link here). More than likely, you will have to end up rewriting good portions of your app.

[KenBuja · Accepted solution]

Also, the CDN no longer contains the Dojo framework packages. 4.x started moving away from them in version 4.14 and got rid of them completely by 4.18.

[ChitraKrishnan]

Hi Steve, KenBuja,

Thanks for your response. I would like to know what would be the preferred language to rewrite the migration?

Thanks

Chitra

[BlakeTerhune · Accepted solution]

I think plain, vanilla JavaScript is preferable, unless you have a specific need for functionality provided by a framework (like React, Vue, Angular, etc.).