Enable strict-mode for TypeScript (#1783)

Co-authored-by: Federico Brigante <github@bfred.it>

1 files changed, 7 insertions, 7 deletions

diff --git a/source/features/upload-button.tsx b/source/features/upload-button.tsx
index 23f690be..6f6d2db9 100644
--- a/source/features/upload-button.tsx
+++ b/source/features/upload-button.tsx
@@ -1,12 +1,12 @@
 import React from 'dom-chef';
 import select from 'select-dom';
-import delegate from 'delegate-it';
+import delegate, {DelegateEvent} from 'delegate-it';
 import features from '../libs/features';
 import * as icons from '../libs/icons';
 
 function addButtons() {
 	for (const toolbar of select.all('form:not(.rgh-has-upload-field) markdown-toolbar')) {
-		const form = toolbar.closest('form');
+		const form = toolbar.closest('form')!;
 		if (!select.exists('.js-manual-file-chooser[type=file]', form)) {
 			continue;
 		}
@@ -14,7 +14,7 @@ function addButtons() {
 		const toolbarGroup = select('.toolbar-group:last-child', toolbar);
 		if (toolbarGroup) {
 			toolbarGroup.append(
-				<button type="button" class="toolbar-item rgh-upload-btn tooltipped tooltipped-nw" aria-label="Upload attachments" hotkey="u">
+				<button type="button" className="toolbar-item rgh-upload-btn tooltipped tooltipped-nw" aria-label="Upload attachments" data-hotkey="u">
 					{icons.cloudUpload()}
 				</button>
 			);
@@ -23,10 +23,10 @@ function addButtons() {
 	}
 }
 
-function triggerUploadUI({target}) {
-	target
-		.closest('form')
-		.querySelector('.js-manual-file-chooser') // Find <input [type=file]>
+function triggerUploadUI({target}: DelegateEvent) {
+	(target as Element)
+		.closest('form')!
+		.querySelector<HTMLElement>('.js-manual-file-chooser')! // Find <input [type=file]>
 		.click(); // Open UI
 }