A guide with clear instructions how to build your own “dead code” remover in JavaScript. By Chidume Nnamdi.
Tree-shaking is one of many optimization techniques we have. It entails removing code that is never used. In this post, we will demonstrate, with a simple JavaScript code, how to build your own tree-shaking utility.
Like literally shaking a tree, we do it to shake off dead leaves and ripe fruits on the tree, so unripe or budding leaves will have full nutrients all for them from the tree without sharing it with the ripe fruits.
The article deals with:
- Tree-shaking explanation
- The advantages of Tree-Shaking
- Guide how to build one
- Let’s shake some code
Tree-shaking is a powerful concept, most popular web tools do implement tree-shaking. Tools like rollup, webpack etc. Yes, our example here is simple but it shows at a basic level what all those complex algorithms from top tools actually do.
And you will get loads of code example to go with this guide. Great read!
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