November 2019
Beginner
804 pages
20h 1m
English
Content preview from Learn TypeScript 3 by Building Web Applications
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A bit of history about JavaScript modules
When JavaScript came out, it didn't provide any support for modularization. There was no specific feature that you could make use of to organize your code in logical groups, expose/hide parts of your code base and define your dependencies.
Given that JavaScript was initially intended to be a glue language rather than a language used to build fully-fledged applications, it wasn't too much of an issue. And of course, when the web was younger, web developers usually didn't do much using JavaScript apart from changing status bar messages, creating small animations, or displaying alert boxes (there were, indeed, exceptions).
Over time, more and more code got written in JavaScript and, of course, the lack ...
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