Refactor background page to use Typescript
Also, this CL adds clean-terminal-webpack-plugin to make it easier to
debug Typescript errors while developing the extension.
Bug: translateselectedtext:15
Change-Id: If9b97cb7508859e2e05f5dc82940808fd935bf1a
diff --git a/src/options/elements/options-editor/add-language-dialog.js b/src/options/elements/options-editor/add-language-dialog.js
index 7b85618..4cfd711 100644
--- a/src/options/elements/options-editor/add-language-dialog.js
+++ b/src/options/elements/options-editor/add-language-dialog.js
@@ -1,9 +1,9 @@
import {css, html, LitElement} from 'lit';
-import {isoLangs} from '../../../common/consts.js';
-import {msg} from '../../../common/i18n.js';
-import {DIALOG_STYLES} from '../../shared/dialog-styles.js';
-import {SHARED_STYLES} from '../../shared/shared-styles.js';
+import {isoLangs} from '../../../common/consts';
+import {msg} from '../../../common/i18n';
+import {DIALOG_STYLES} from '../../shared/dialog-styles';
+import {SHARED_STYLES} from '../../shared/shared-styles';
const ALL_LANGUAGES =
Object.entries(isoLangs)