Add size-limit to prevent accidental bloat

[prichodko]

After this #513 great catch and huge decrease of bundle size, I decided to add size-limit to prevent from accidentally bundle something what would drastically increase it.

Note: I noticed prettier on formatOnSave in VSCode formatted also package.json, but I decided to leave it, because it's being used in a library and JSON is supported format.

[vlad-zhukov]

This is good idea but wow, size-limit adds lots of dependencies. It looks like it uses webpack under the hood but we use rollup instead and I'm not sure how well it's going to work. Perhaps bundlesize is a better candidate?

[prichodko]

@vlad-zhukov I was thinking about bundlesize. However there is a big difference between those two

• bundlesize outputs just a file sizes, size-limit shows the size of lib + it's dependencies (prevents unexpected huge dependency).

More info here. What do you think?

[jaredpalmer]

What should we do here?

[prichodko]

Just merge, if you agree it's a good thing to have. Let me know and I will rebase the branch.

[jaredpalmer]

Lets rebase and get it going

[prichodko]

next or master? 😄

[jaredpalmer]

Wait woah. Sorry I am out of it. Formik next is not what I want. I got confused because of how I am working on Razzle. Sorry about this. All against master. oof.

[prichodko]

@jaredpalmer rebased 😄

During test it checks Formik with all dependencies, minified and gzipped. Current output is

  ./dist/formik.js
  Package size: 11.71 KB
  Size limit:   14 KB

  ./dist/formik.es6.js
  Package size: 11.83 KB
  Size limit:   14 KB

  ./dist/formik.umd.js
  Package size: 12.23 KB
  Size limit:   14 KB

with threshold 14kb.