Story 🧚‍♀️:

As vNext will not support IE11 and thus we will support only evergreen browsers, we can start using latest ECMA lang features. For now we decided to use target: ES2015/lib: ['ES2015'] #19039

Actual behavior:

We are using ECMA lang features beyond ES2015.

• Array.prototype.includes (ES2016)
• TBA

Expected behavior:

• bump to target/lib: ES2020

Tasks

• update migration generator / feat(tools): set target and lib to ES2020 #19398
• update all vNext pacakges by runnin yarn nx workspace-generator migrate-converged-pkg --all
• update just-scripts ts
  • vNext packages should consume their tsconfig instead of overrides used in just-scripts ts task