fix: Pad formatted year string with zeros

[at-soft]

This pull request fixes formatting of date with pattern "YYYY" for years less than 1000

[codecov-io]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (f3e671f) to head (e1e64bf). Report is 557 commits behind head on dev.

Additional details and impacted files

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  Files          154       154           
  Lines          982       982           
  Branches       140       140           
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  Hits           982       982           

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[hc-12]

I just stumbled into this issue. It would be nice to get this merged in

[cokkto]

Not really good. You can pad number on demand in your particular project but internationally years before 1000 are used unpadded

[at-soft]

Not really good. You can pad number on demand in your particular project but internationally years before 1000 are used unpadded

My intention is to keep compatibility with moment.js API, which has YYYY format for 4-digit years and Y to display unpadded year. Moreover, current formatting leads to some errors like

const initial = new Date('0001-01-01');
const initial_dayjs = dayjs(initial);
const formated_initial = initial_dayjs.format('YYYY-MM-DD'); // produces 1-01-01
const parsed = dayjs(formated_initial);
const formated_result = initial_dayjs.format('YYYY-MM-DD'); // produces 2001-01-01