fix: ensure generated fromTimestamp works when useOptionals=all

[miselin]

The generated fromTimestamp raises a Typescript compilation error 't.seconds' is possibly 'undefined' when useOptionals=all as all the fields in the generated timestamp message are optional.

This PR changes the generated function to handle an undefined value by defaulting to zero.

(drafting while I get the test files updated)

[stephenh]

Hi @miselin ; ah yeah, this is a good fix! Updating the test files should work with yarn bin2ts, but lmk if that's not working. Thanks!

[miselin]

Hi @miselin ; ah yeah, this is a good fix! Updating the test files should work with yarn bin2ts, but lmk if that's not working. Thanks!

I think I'm fighting against something with Docker and mount permissions somewhere:

$ yarn build:test
./map-long-optional/test.proto
protoc-gen-dump: line 18: file.bin: Permission denied
mv: overwrite './map-long-optional/test.bin'? ^C

The scripts/tests don't have write access to the directory but it's a rw mount... very strange 🤔

[stephenh]

@miselin I went ahead and pushed up the test changes, and they look good; thanks!

[stephenh]

🎉 This PR is included in version 1.147.3 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release
• v1.147.3

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