How can I solve error: Your Worker exceeded the size limit of 3 MiB.

[zhizhizhiwang]

I don't know how to count the size occupied by workers in the project. Also, what can I do to reduce the size of the worker?
look my repository code on master branch can be deployed, but not dev.

I look workers/plans , but the command wrangler deploy can't run on a page object, and I try wrangler pages deploy, but I can’t get any useful information.