Upgrade to TS 3.8

[maier49]

Type: feature

The following has been addressed in the PR:

• There is a related issue
• All code has been formatted with prettier as per the readme code style guidelines
• Unit or Functional tests are included in the PR

Description:

Resolves #718

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[codecov]

Codecov Report

Merging #719 into master will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #719      +/-   ##
==========================================
+ Coverage   97.76%   97.78%   +0.02%     
==========================================
  Files         120      121       +1     
  Lines        6974     7052      +78     
  Branches     1585     1603      +18     
==========================================
+ Hits         6818     6896      +78     
  Misses        156      156              

Impacted Files	Coverage Δ
src/core/middleware/focus.ts	100.00% <ø> (ø)
src/shim/array.ts	100.00% <ø> (ø)
src/shim/object.ts	97.82% <ø> (ø)
src/core/middleware/data.ts	100.00% <100.00%> (ø)
src/core/middleware/theme.ts	95.78% <100.00%> (ø)
src/stores/process.ts	99.33% <100.00%> (ø)
src/testing/mocks/middleware/focus.ts	100.00% <100.00%> (ø)
src/routing/Router.ts	100.00% <0.00%> (ø)
src/routing/Outlet.ts
src/routing/Route.ts	71.42% <0.00%> (ø)
... and 3 more

---

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[agubler]

A couple of questions, doesn't look overly complicated so far.

[agubler]

Do we want to change the version, we are mostly trying to make the package forwards compatible. Is that possible?

[maier49]

Oh that was just my misunderstanding. I've reverted the package version, still builds fine against 3.4.5

[maier49]

This worked with the next version of TypeScript as well with no further changes needed than for 3.8