[polyserve] bump mime to 2.x

[43081j]

Fixes #415.

Just bumped mime to its 2.x branch and fixed the single reference we have of it. Seems their 1 -> 2 breaking change was just API renaming.

WCT seemed to have the types too, but didn't have mime its self as a dep.. so i removed it. let me know if that was somehow a mistake.

If #395 gets merged first i will rebase and have npm sort the lock conflicts.

cc @justinfagnani

[web-padawan]

@43081j I was wondering if this is also expected to be handful for polymer analyze?
As of now, the .js bundle can be analysed but the exact same file with .mjs extension produces empty output, with no warnings etc.

/cc @rictic

[TimvdLippe]

This seems good to me! Could you rebase on master and make sure the audit warnings remain resolved? Thanks!

[43081j]

@TimvdLippe i've rebased it to master.

the WCT package lock diff is pretty much unreviewable, shall we just assume it is fine? removing mime changed the lock a lot...

as for the audits, i can npm audit fix but that will add more version bumps we don't have in master.

[43081j]

we also get this now...

> web-component-tester@6.7.1 build /home/travis/build/Polymer/tools/packages/web-component-tester
> tsc && gulp build
runner/webserver.ts:222:9 - error TS2345: Argument of type '(app: Express, options: ServerOptions) => Promise<Express>' is not assignable to parameter of type 'ExpressAppMapper'.
  Type 'Promise<e.Express>' is not assignable to type 'Promise<e.Express>'. Two different types with this name exist, but they are unrelated.
    Type 'e.Express' is not assignable to type 'e.Express'. Two different types with this name exist, but they are unrelated.
      Property 'mountpath' is missing in type 'Express'.
222         appMapper);
            ~~~~~~~~~
runner/webserver.ts:249:13 - error TS2322: Type 'any' is not assignable to type 'never'.
249       const never: never = polyserveResult;
                ~~~~~

[TimvdLippe]

Oh sorry, I meant the audit in polyserve. Wct I am working on in a different PR. Will take a look tomorrow.

[43081j]

ah polyserve reports 1 low vulnerability (deep-extend). same as master?

[TimvdLippe]

Let's leave WCT out for now, I will do that in a different PR. Thus, this PR should just update the package in polyserve. The remaining audit failure is in the bundler, which is already fixed, just not released.

[43081j]

@TimvdLippe i dropped the changes to wct now

[TimvdLippe]

Awesome thanks!