dayjs

2KB immutable date time library alternative to Moment.js with the same modern API

v1.11.13 URL: https://unpkg.com/dayjs@1.11.13/dayjs.min.js

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dayjs date time immutable moment

moment

Parse, validate, manipulate, and display dates

v2.30.1 URL: https://unpkg.com/moment@2.30.1/moment.js

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moment date time parse format validate i18n l10n ender

moment-timezone

Parse and display moments in any timezone.

v0.5.46 URL: https://unpkg.com/moment-timezone@0.5.46/index.js

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moment date time timezone olson iana zone tz

sinon

JavaScript test spies, stubs and mocks.

v19.0.2 URL: https://unpkg.com/sinon@19.0.2/lib/sinon.js

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sinon test testing unit stub spy fake time clock mock xhr assert

pretty-ms

Convert milliseconds to a human readable string: `1337000000` → `15d 11h 23m 20s`

v9.2.0 URL: https://unpkg.com/pretty-ms@9.2.0/index.js

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pretty prettify human humanize humanized readable time ms milliseconds duration period range text string number hrtime