fix(ts): fix typescript default module compilerOption

[kevinmarrec]

Types of changes

• Bug fix (a non-breaking change which fixes an issue)
• New feature (a non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Description

ts-loader needs to run with module: 'esnext' to handle async Components (i.e. () => import('path/to/component')) in TypeScript Vue SFC.

Meanwhile ts-node needs to run with module: 'commonjs' to be able to transpile without errors RunTime TypeScript files such as nuxt.config.ts, modules & serverMiddlewares.

There is no workaround (or maybe a really tricky one by setting a different tsconfig.json config through build.loaders.ts options), so it's a HOTFIX.
Which make everything work in any case.

I also removed a duplicated test.

Thanks @dschewchenko for finding the issue regarding the import of async components using nuxt-ts

Checklist:

• I have updated tests to cover my changes (if not applicable, please state why)
• All updated and existing tests are passing.

[codecov-io]

Codecov Report

Merging #4886 into dev will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev    #4886   +/-   ##
=======================================
  Coverage   91.66%   91.66%           
=======================================
  Files          72       72           
  Lines        2399     2399           
  Branches      592      592           
=======================================
  Hits         2199     2199           
  Misses        182      182           
  Partials       18       18

Impacted Files	Coverage Δ
packages/typescript/src/index.js	68.42% <ø> (ø)	⬆️

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