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chore: bump typescript to v4.7 #12901

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merged 5 commits into from Jun 3, 2022
Merged

chore: bump typescript to v4.7 #12901

merged 5 commits into from Jun 3, 2022

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mrazauskas
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@mrazauskas mrazauskas commented Jun 2, 2022

Closes #12877

Summary

This should fix TypeScript upgrade issue. Interesting thing was caught by TS. For example, this:

jest.spyOn({}, 'ups');

Will throw: "Error: Cannot spy the ups property because it is not a function".

But here:

jest.spyOn({}, Symbol('ups'));

It throws: "TypeError: Cannot convert a Symbol value to a string". This is what TS was suggesting to fix. After this fix, the error message becomes: "Error: Cannot spy the Symbol(ups) property because it is not a function". Much better.


Also I spend some time trying out if jest.spyOn accepts keys as symbols. It does, all works. Only error messages is the issue. Would be nice to have tests for these, of course. Started working, refactoring some details and here I got stuck ;D Wait.. But that is another story already. Better I will make separate PR later.

Test plan

Green CI.

@SimenB
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SimenB commented Jun 2, 2022

need to update some lockfiles

@SimenB SimenB merged commit 3e38157 into jestjs:main Jun 3, 2022
@mrazauskas mrazauskas deleted the chore-ts4.7 branch June 3, 2022 05:32
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3 participants