chore: Upgrade TypeScript to 3.8 #3407
Description
TensorBoard TypeScript rules are currently using TS 3.4.x. Internally, we are using 3.8. We should upgrade so we can leverage newer language features.
It is currently impossible because of our Angular dependencies:
(warning " > @angular/http@7.2.16" has incorrect peer dependency "@angular/core@7.2.16".
warning " > @angular/http@7.2.16" has incorrect peer dependency "@angular/platform-browser@7.2.16".
warning " > @angular/bazel@8.2.14" has incorrect peer dependency "typescript@>=3.4 <3.6".
warning "@angular/bazel > tsickle@0.35.0" has incorrect peer dependency "typescript@~3.4.1".
warning " > @angular/compiler-cli@8.2.14" has incorrect peer dependency "typescript@>=3.4 <3.6".
Error: The Angular Compiler requires TypeScript >=3.4.0 and <3.6.0 but 3.7.3 was found instead.