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Difference in Date format of dateStyle "medium" with respect to web standards. #4551

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vishwa-rippling opened this issue Oct 9, 2024 · 1 comment
Open

Difference in Date format of dateStyle "medium" with respect to web standards. #4551

vishwa-rippling opened this issue Oct 9, 2024 · 1 comment
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@vishwa-rippling
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Which package?

intl-datetimeformat

Describe the bug

The Date format of dateStyle 'Medium' for en-IN locale is "d MMM y" as per web standards, But it's "dd-MMM-y" in the polyfill provided by intl-datetimeformat.

To Reproduce

Code snippet:

const date = new Date(2024,0,9);

console.log(
  new Intl.DateTimeFormat('en-IN', {
    dateStyle: 'medium',
  }).format(date),
);

Expected behaviour

Current output: 20-Dec-2020
Expected output: 20 Dec 2020
@longlho longlho added the pinned label Oct 11, 2024
@longlho
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longlho commented Oct 11, 2024

Our date time format scoring algorithm is different from ICU, thus the result. I personally don't really have to time to effectively port the ICU Java version to JS, so there'll always be slight differences.

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@longlho @vishwa-rippling