Cannot convert undefined or null to object

[ycjcl868]

Bug Report

bug version: @babel/runtime 7.3.0, #9334

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[yesmeck]

It seems that the 7.3.0 release of @babel/runtime don't allow spreading an undefined value now.

[gera2ld]

It breaks everything!

[danez]

Thanks for reporting. I will have a look now.

[danez]

Does anyone have a simple example of a spread that I can use to reproduce this?

[yoyo837]

@ycjcl868 Hey guy, are you using dva? it looks like a version conflict.

dvajs/dva#1998

[yesmeck]

We can confirm it's a version conflict of https://github.com/umijs/umi. @danez Thanks for your reply.

[feiyingx]

how do you resolve the version conflect @yesmeck

[yesmeck]

@feiyingx See umijs/umi#1888

[loganfsmyth]

Reopening this because it seems like a legitimate regression on our side. The runtime is supposed to stay compatible.

[gera2ld]

I don't think this is a version conflict since it breaks all code that depends on @babel/runtime@~7.2.0.
Should every third-party library pack a copy of @babel/runtime with it in the future?

[yesmeck]

https://github.com/yesmeck/babel-spread-undefined

Here is a reproduction. It seems @babel/runtime@7.3.0 not compatible with "@babel/plugin-proposal-object-rest-spread@7.2.0