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Description
Acknowledgement
- I acknowledge that issues using this template may be closed without further explanation at the maintainer's discretion.
Comment
This GitHub issue contains feedback on the TS 5.4-beta release from the team
that is responsible for keeping Google's internal software working with the
latest version of TypeScript.
Executive summary
- We do not expect to have significant difficulty in upgrading Google to TS
5.4. - Some changes to our TypeScript code are required to make it compile with TS
5.4. - Detail sections below explain the changes to our code we expect to make to
unblock the upgrade.
Impact summary
| Change description | Announced | Libraries affected |
|---|---|---|
| lib/d.ts changes | yes | 0.016% |
| Errors When Type-Only Imports Conflict with | yes | 0.0004% |
The Announced column indicates whether we were able to connect the observed
change with a section in the
TS5.4-beta announcement.
The following sections give more detailed explanations of the changes listed
above.
Changes which were announced
lib/d.ts Changes
We support the typing improvements. Generally it's clear what's changing and the
changes seems minimal this time.
For the TSC changes, we expect to fix our codebase to comply to the new API and
for other typing changes, we expect to // @ts-ignore to silence the errors.
We observed the following types of errors:
- TS2345: Argument of type X is not assignable to parameter of type Y
- .005% of libraries affected
- TS2769: No overload matches this call.
- .001% of libraries affected
- TS2322: Type X is not assignable to type Y.
- .003% of libraries affected
- TS2344: Type X does not satisfy the constraint Y.
- .001% of libraries affected
- TS2552: Cannot find name X. Did you mean Y?
- .001% of libraries affected
- TS2430: Interface X incorrectly extends interface Y.
- .001% of libraries affected
- TS2339: Property X does not exist on type Y.
- .001% of libraries affected