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Immutable & Fluent API
All operations return new instances. Chainable and expressive.
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ts-datetimeModern TypeScript DateTime Library.
Immutable, fluent, and fully-typed. Inspired by Carbon.
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Locale & Config Support
Global, per-instance, and per-call configuration for locale, formatting, and more.
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Robust Parsing
Supports ISO, timestamps, relative strings (e.g. 'next week', '+2 days'), and strict mode.
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Intervals & Periods
Built-in support for durations and date ranges.
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TypeScript First
Fully typed, with great DX in modern editors.
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Tested & Reliable
Thoroughly tested for edge cases and correctness.