@babel/types 7.12.11 causes syntax error on TypeScript 3.2.4

Bug Report

Current behavior I use babel in a react application. When trying to produce a build (yarn run build), it fails with error code: TypeScript error in /var/jenkins/…/node_modules/@babel/types/lib/index.d.ts(1450,50): ‘{’ or ‘;’ expected. TS1144

      1448 | }): ReturnedChild[];
      1449 | 
    > 1450 | declare function assertNode(node?: any): asserts node is Node;
           |                                                  ^
      1451 | 

As a current fix I declared a yarn resolution to use version 7.12.10, which compiles without any issues.

- Babel version:  v7.12.11
- Node 10.15.3, yarn 1.22.4, typescript 3.2.4
- OS: Windows 10
- How you are using Babel: webpack
- ```

[nicolo-ribaudo]

@salvoravida Every time you comment in this repository you do so sarcastically, pretending we owe you something (hint: we do not!). Unless you want to be collaborative, you are not welcome to interact in this repository.

PS. I already recommended you to use lockfiles.

[AviVahl]

@salvoravida You can avoid your CI breaking by using lock files and not picking up new versions automatically… Lock files are there so we can continue working while addressing any compatibility issues that rise due to new versions. Works well for my team.

I cannot imagine working on a project using ts@3.2 without lock files. It could break at any second due to @types packages already dropping their support. @babel is just the current victim/offender.