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The Temporal API, which is currently in Stage 3, is being developed to improve the current Date object, which is mostly known for its unexpected behavior. Today there are lots of date-time libraries for JavaScript, such as date-fns, moment, js-joda and a huge number of others. They all try to help with unpredictable and unexpected behavior of JavaScript Date object by adding features such as timezones, date parsing and almost everything else.
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The proposal for import attributes aims to improve the import statement in JavaScript by allowing developers to assert certain conditions about the imported module. This can help catch errors at compile-time instead of runtime and make the code more robust. Currently this proposal is in Stage 3.
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The pipeline operator proposal, which is currently in Stage 2, introduces a new operator |> that allows developers to chain multiple function calls together in a more readable and concise way. Together with the pipeline operator, the placeholder operator % is being introduced which will hold the previous function’s value. It should enhance the readability and maintainability of code, especially when performing a series of operations on a value.
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Although decorators are not yet available in JavaScript, they are actively used with the help of such transpilers as TypeScript, Babel and Webpack. Currently, the decorators proposal is in Stage 3, which means it is getting closer to being a part of native JavaScript. Decorators are the functions, that are called on other JavaScript elements, such as classes, class elements, methods, or other functions, by adding an additional functionality on those elements.
