Javascript Toolchain

  1. Package manager: Yarn, npm. Lets you install or update third party packages.

  2. Bundler: Webpack, Parcel. Lets you write module code and bundle it together into small packages to optimize load time. Can parse JSX files (which browsers don't understand) and also add a SaSS to CSS buld step.

  3. Compiler: Babel. lets you write modern JS that still works in older browsers.

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