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/src/components/categorical/annoSelect.js

@@ -1,56 +0,0 @@
-import React from "react";
-import { Button, MenuItem } from "@blueprintjs/core";
-import { Select } from "@blueprintjs/select";
-
-class DuplicateCategorySelect extends React.PureComponent {
-  constructor(props) {
-    super(props);
-    this.state = {};
-  }
-
-  render() {
-    const {
-      allCategoryNames,
-      categoryToDuplicate,
-      handleModalDuplicateCategorySelection,
-    } = this.props;
-    return (
-      <div>
-        <p>
-          Optionally duplicate all labels & cell assignments from existing
-          category into new category:
-        </p>
-        <Select
-          items={
-            allCategoryNames ||
-            [] /* this is a placeholder, could be  a subcomponent to avoid this */
-          }
-          filterable={false}
-          itemRenderer={(d, { handleClick }) => {
-            return (
-              <MenuItem
-                data-testclass="duplicate-category-dropdown-option"
-                onClick={handleClick}
-                key={d}
-                text={d}
-              />
-            );
-          }}
-          noResults={<MenuItem disabled text="No results." />}
-          onItemSelect={(d) => {
-            handleModalDuplicateCategorySelection(d);
-          }}
-        >
-          {/* children become the popover target; render value here */}
-          <Button
-            data-testid="duplicate-category-dropdown"
-            text={categoryToDuplicate || "None (all cells 'unassigned')"}
-            rightIcon="double-caret-vertical"
-          />
-        </Select>
-      </div>
-    );
-  }
-}
-
-export default DuplicateCategorySelect;