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February 15th, 2021 × #TypeScript#Compilers#Bundlers

Hasty Treat - TypeScript Compilers and Build Tools

Scott and Wes discuss the difference between TypeScript compilers like TSC and SWC versus bundlers like Webpack, and whether you still need bundlers when using TypeScript.

Wes Bos

Wes Bos Host

Scott Tolinski

Scott Tolinski Host

or
Show Notes Transcript

In this Hasty Treat, Scott and Wes talk about the differences between compilers and build tools in TypeScript.

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Show Notes

03:38 - What is a TypeScript compiler?

07:49 - Babel

  • Transpiler
  • It doesn't do typechecking
  • New JS features that aren't in TypeScript yet

10:22 - SWC

13:03 - Deno

13:36 - Surcase

14:46 - ESBuild

  • Compiles, but doesn't do any type checking
  • Fastest

17:39 - What about bundlers?

  • Parcel
  • Snowpack
  • Webpack
  • ESBuild
  • When might you still need a bundler?
    • To handle different types of files that are non-standard
      • Like importing CSS and images
  • Treeshaking
  • Smaller bundle files
    • Typescript can concatenate to a single file, or all .js files, but smaller / smarter bundles still need a tool for that
  • Polyfills
    • Typescript does convert to syntax, but will not polyfill features
    • Something like Promise
      • Syntax can be transpiled to old code
      • Methods like allSettled aren't

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