Fix crash on attempting to suggest a ts import for a synthetic js resolution #41467
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sandersn
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Nov 10, 2020
src/compiler/checker.ts
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| if (location.pos < 0 || location.end < 0) { | ||
| // Psuedo-synthesized input node |
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| if (location.pos < 0 || location.end < 0) { | |
| // Psuedo-synthesized input node | |
| // Pseudo-synthesized input node | |
| if (location.pos < 0 || location.end < 0) { |
sheetalkamat
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Nov 11, 2020
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@typescript-bot cherry-pick this into release-4.1 |
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Heya @weswigham, I've started to run the task to cherry-pick this into |
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Hey @weswigham, I couldn't open a PR with the cherry-pick. (You can check the log here). You may need to squash and pick this PR into release-4.1 manually. |
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Port #41467 to `release-4.1`
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Fixes #41410
After looking at it a bit, I realized we were checking if
ignoreErrorswas set, but were unconditionally making a diagnostic because we wanted to try and offer a suggestion (namely, a suggestion to try to install types for it when the js seems to be present, but not any types). I simply changed our suggestion-or-error adding function to more gracefully handle the psuedo-synthetic nodes we use for some compiler-option-added imports. Now that I know how it works, I can say it was theoretically possible to trigger the same issue withimportHelpers, but you'd have needed to have atslibon disk with no accompanying types, which is obviously not what we distribute (therefore very unlikely to occur).