Returns the currently selected text in the editor. See https://github.com/jpuri/draftjs-utils/blob/e81c0ae19c3b0fdef7e0c1b70d924398956be126/js/block.js#L106.
Returns the currently selected text in the editor. See https://github.com/jpuri/draftjs-utils/blob/e81c0ae19c3b0fdef7e0c1b70d924398956be126/js/block.js#L106.