maybe setters needed?

[dmitry (dim0nickb)]

hello. this new npm package version 1.12... is used by typeorm
and we have issue because our app broke with runtime error "TypeError: Cannot set property of # which has only a getter"
maybe this fix be helpful

[Microsoft Contribution License Agreements (msftclas)]

All CLA requirements met.

[Andreas Winther Moen (AndreasWintherMoen)]

Fixes the TypeORM issue.

[David Hirtle (wachunga)]

Ran into this issue today as well with tslib 2.0.2. Downgrading to an earlier version avoids the issue.

[Ron Buckton (rbuckton)]

Imported bindings are immutable per the ES2015 spec. What version TypeORM are you using and do you have a stack trace for the error?

[dmitry (dim0nickb)]

Imported bindings are immutable per the ES2015 spec. What version TypeORM are you using and do you have a stack trace for the error?

Hello. Sorry, but i don't have stacktrace now. On 13 May 2020 we used "typeorm": "0.2.24". After update on tslib 1.12 we found an issue and revert tslib to 1.11.1 and it work fine till now.

[Ron Buckton (rbuckton)]

Its possible this could be related to an issue with default exports that was fixed in microsoft/TypeScript#38808 and #116. I'd recommend you test with the latest version of tslib and, if there is still an issue, please report back with a stacktrace so that we might investigate further.

Since mutable import bindings do not match the ECMAScript spec, I don't believe this PR can move forward.