1) Immediately return this expression instead of assigning it to the temporary variable.
2) Extract this nested ternary operation into an independent statement.
3) Expected a `for-of` loop instead of a `for` loop with this simple iteration.
1) Copy table rows across two or more active query tool sessions.
2) Copied rows can be pasted multiple times without selecting a row in the query tool grid.
3) Adds an empty row at the end in the query tool grid after pasting rows.
This significantly speeds up loading of the application; in an average of 3 tests, v1.6
loaded in 11.5s in the runtime on a Mac, whilst the webpacked version of the code
loaded in 5.53s.