fix: ssr support (#1890)

[nandorojo]

Description

Fix #1890

Changes

Don't call window in the constructor of JS Reanimated, since this isn't available on the server.

Test code and steps to reproduce

One-line change, which reverts back to what was already there in 2.0.0-rc.0. Let me know if this is needed, but given that it's simply a regression patch, I figure it isn't.

Checklist

• Included code example that can be used to test this change
• Updated TS types
• Added TS types tests
• Added unit / integration tests
• Updated documentation
• Ensured that CI passes

[piaskowyk]

timeProvider.now() is called in every frame on the web implementation, so could you change this to a little bit faster version without if condition? Something like this:

this.timeProvider = {};
if(process.env.JEST_WORKER_ID) {
  this.timeProvider.now = () => Date.now();
}
else {
  this.timeProvider.now = () => window.performance.now();
}

[nandorojo]

Yeah that makes more sense, I went with a ternary to stay consistent. Thanks for taking this on and making the fix!