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feat: add sync way of requiring and transpiling module #8808

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merged 2 commits into from Aug 14, 2019

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SimenB
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@SimenB SimenB commented Aug 11, 2019

Summary

Builds on #8756 by adding an override that does not require you to handle a promise unless you pass your own function which returns a promise. This is needed for #8330.

I'm not sure I got the type info correct here, can somebody who actually knows TS tell me if this is correct? 馃槄 If it's hard with overrides, I'm happy to have another go with 2 different methods rather than if (isPromise).

/cc @M4rk9696 @G-Rath

Test plan

Still green CI

(purposefully no changelog entry as it's conceptually part of the unreleased #8756)

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If it's passing, I say ship it - I'd also say be careful w/ this pattern, as it's very easy to cause problems w/ things like tooling (in particular b/c you've not got a discriminating parameter i.e usePromise: true).

I'll find out pretty quickly if it's going to cause trouble 馃槃


I'm a little surprised that compiles:

https://www.typescriptlang.org/play/#code/GYVwdgxgLglg9mABMMAKCBDANlgRhiAawH4AuRVASkQF4A+RAZygCcYwBzS85tzgbgCwAKFCRYCZGkw58RMhWr1EABRZwAtjEYBTADy92HOt1Xqtug6yN0ho8NHhIU6bHgIlyVWgwBucGAATRAAfM01tfUNOE3I1CMto41Cma05EAG8RREQYYFQAQhl3Imos4Ryclh0oEBYkAHIGuxyAXxFsxGra+vCLHQA6asY4LF8dVCbKO3bhERdvZQzWygGoAAsdNGmgA

But it's pretty late for me, so I'm not going to question it.

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Types LGTM ;)

packages/jest-transform/src/ScriptTransformer.ts Outdated Show resolved Hide resolved
@SimenB SimenB merged commit abb760a into jestjs:master Aug 14, 2019
@SimenB SimenB deleted the sync-transform-require branch August 14, 2019 08:33
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5 participants