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Summary
Blocking #6106
NetlifyCMS project is currently built with TypeScript 3.9.10. In #6106, I upgraded AJV to 8.8.2 which was built with TypeScript 4+. The type definitions for AJV@8 include syntax that current version of TypeScript doesn't support. As a result, in #6106, the build is failing because it can't compile TypeScript. This PR attempts to upgrade version of TypeScript to 4.5.4 to allow us building with TypeScript 4+.
Most of the changes were around error handling. I'm using type guards to detect presence of
error.message
property. There is one type error that I'm not sure about - it's around handling of response from GraphQL. I'll check with me team tomorrow and update this PR.Test plan
Checklist
Please add a
x
inside each checkbox:yarn format
.yarn test
.A picture of a cute animal (not mandatory but encouraged)