fix: avoid returning failureMessages: [undefined]
#76
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From jestjs/jest#12839 (comment)
Fixing the logic to avoid returning
failureMessages: [undefined]
. The type offailureMessage
isArray<string>
, here implementation was incorrect.For instance, all is good in
create-jest-runner
, because of types – https://github.com/jest-community/create-jest-runner/blob/69558d1bb03cfd3b9080ef7b8714ba17ff3c48cb/lib/toTestResult.ts#L56Might be useful to have more type safety in this library, but to add a build step is somewhat too much. Or?