tslib version in package.json seems to be incorrect

[daku10]

Describe the bug
A clear and concise description of what the bug is.

tslib dependencies in package.json seems to be incorrect.
Packages declare that they use Typescript@~3.8.3 and tslib@^1.8.0.
And some packages uses array spread operator, it is transpiled to code that uses __spreadArrays function of tslib by using typescript@~3.8.3.
But __spreadArrays function is instroduced tslib@1.10.0 release note
Therefore build of the packages is failed in some enviroment.

SDK version number

@aws-sdk/signature-v4@1.0.0-beta.4

Is the issue in the browser/Node.js?
Node.js

Details of the browser/Node.js version
Paste output of npx envinfo --browsers or node -v

v12.16.0

To Reproduce (observed behavior)
Steps to reproduce the behavior (please share code or minimal repo)

I cannot prepare minimal code to reproduce this issue, because this issue is related to environment.
So I create a repository which contains this issue to use aws-amplify-react.
yarn && yarn build may produce this issue.

Additional context
Add any other context about the problem here.

I have encountered this issue when I introduced ams-amplify-react to some old project which lockfile uses tslib@1.9.3 as tslib@^1.8.0.
I think tslib version should be upgraded to match typescript version.
Should I create PR for this issue?

[trivikr]

tslib was bumped to 2.0.0 in #1417
typescript was bumped to 4.0.2 in #1456

Both updates are available in release v1.0.0-gamma.7
Is this issue still reproducible @daku10 ?

[daku10]

@trivikr

In my environment, resolve this issue to update version.
Thanks!

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