Move to ES modules - Githubissues

qntm commented 2 years ago

In the next major version of t-a-i my intention is to stop shipping CommonJS modules and start shipping ES modules instead. As t-a-i actually does seem to be in use, I'm not intending to make a breaking change like this arbitrarily, as I have with all my other, largely unused npm packages. Currently my plan is to wait for Node.js 14 to end Long-Term Support, at the end of April 2023. In May 2023 t-a-i will drop support for Node.js 14, which of course is a breaking change and will require a major version bump from t-a-i@3 to t-a-i@4, so I will take this opportunity to carry out the conversion to ES modules at the same time.

As with t-a-i@1 and t-a-i@2, support for t-a-i@3 will be dropped once t-a-i@4 is released. New leap seconds, if and when they are announced, will be incorporated into t-a-i@4 only. In particular,

In January 2023, a leap second may be announced for the end of June 2023. If so, this leap second will be added to t-a-i@3.
In May 2023, t-a-i@4 will appear, and support for t-a-i@3 will be dropped.
In June 2023, the leap second announced in January 2023 may occur. If so, both t-a-i@3 and t-a-i@4 will recognise it.
In July 2023, a leap second may be announced for the end of December 2023. If so, this leap second will not be added to t-a-i@3, only t-a-i@4.
In December 2023, the leap second announced in July 2023 may occur. If so, only t-a-i@4 will recognise it, not t-a-i@3.

qntm commented 1 year ago

There will be no leap second at the end of June 2023, so the plan above simplifies to:

In May 2023, t-a-i@4 will appear, and support for t-a-i@3 will be dropped.
In July 2023, a leap second may be announced for the end of December 2023. If so, this leap second will not be added to t-a-i@3, only t-a-i@4.
In December 2023, the leap second announced in July 2023 may occur. If so, only t-a-i@4 will recognise it, not t-a-i@3.

qntm commented 1 year ago

A little late, but t-a-i@4 has now been published, and t-a-i@3 is now deprecated.

In July 2023, a leap second may be announced for the end of December 2023. If so, this leap second will not be added to t-a-i@3, only t-a-i@4.
In December 2023, the leap second announced in July 2023 may occur. If so, only t-a-i@4 will recognise it, not t-a-i@3.

qntm commented 1 year ago

It has been announced that there will be no leap second at the end of December 2023. Neither t-a-i@4 nor t-a-i@3 need to recognise this. And t-a-i@3 continues to be valid and usable...

qntm / t-a-i

Move to ES modules #43