TS migration. #2288. (#2328)

* Added TS. Updated build and linting config. Added types.

* [ts-migrate][.] Rename files from JS/JSX to TS/TSX

Co-authored-by: ts-migrate <>

* [ts-migrate][.] Run TS Migrate

Co-authored-by: ts-migrate <>

* Corrected files mangled by ts-migrate.

* Updated lint config, minor linting.

* Re-enabled Husky.

* Updated tests and config.

* Reverted webpack devtool config.

* Removed obsolete snapshots.

* Added annotations snap.

* Updated tsconfig includes wrt linting.

* Removed ts-migrate.

Co-authored-by: Timmy Huang <tihuan@users.noreply.github.com>

client/__tests__/util/stateManager/controlsHelpers.test.js

@@ -1,9 +0,0 @@
-/*
-test controls helpers
-*/
-// TODO #2227 test: improve test coverage on control helper functions
-// (`topNCategories()`, `isSelectableCategoryName()`, `selectableCategoryNames()`, `createCategorySummaryFromDfCol()`, `createCategoricalSelection()`, )
-
-describe("controls helpers", () => {
-  test("placeholder", () => {});
-});