fix(Server): validate express.static.mime.types

[hiroppy]

fixes: #1724

• This is a bugfix
• This is a feature
• This is a code refactor
• This is a test update
• This is a docs update
• This is a metadata update

For Bugs and Features; did you add new tests?

Yes.

A test which Checks application/wasm already exists.

https://github.com/webpack/webpack-dev-server/blob/master/test/ContentBase.test.js#L301

Motivation / Use-Case

Validate express object.

Breaking Changes

no

Additional Info

no

[alexander-akait]

I think better to remove !express.static.mime.types.wasm because in some old cases it can be text/html and it is invalid, we need use right mime for wasm

[codecov]

Codecov Report

Merging #1765 into master will increase coverage by 0.02%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1765      +/-   ##
==========================================
+ Coverage    87.6%   87.62%   +0.02%     
==========================================
  Files           9        9              
  Lines         589      590       +1     
  Branches      175      176       +1     
==========================================
+ Hits          516      517       +1     
  Misses         61       61              
  Partials       12       12

Impacted Files	Coverage Δ
lib/Server.js	83.33% <100%> (+0.04%)	⬆️

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[hiroppy]

@evilebottnawi PTAL 🙏

[alexander-akait]

Good job 👍

[alexander-akait]

/cc @hiroppy something wrong with linting

[hiroppy]

Fixed.

[alexander-akait]

God job!