Enable strict-mode for TypeScript (#1783)

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

1 files changed, 8 insertions, 5 deletions

diff --git a/source/features/linkify-urls-in-code.tsx b/source/features/linkify-urls-in-code.tsx
index c46ba764..60ffe510 100644
--- a/source/features/linkify-urls-in-code.tsx
+++ b/source/features/linkify-urls-in-code.tsx
@@ -23,17 +23,20 @@ const options = {
 	}
 };
 
-export const editTextNodes = (fn, el) => {
+export const editTextNodes = (
+	fn: typeof linkifyIssues | typeof linkifyUrls,
+	el: HTMLElement
+) => {
 	for (const textNode of getTextNodes(el)) {
-		if (fn === linkifyUrls && textNode.textContent.length < 11) { // Shortest url: http://j.mp
+		if (fn === linkifyUrls && textNode.textContent!.length < 11) { // Shortest url: http://j.mp
 			continue;
 		}
 
-		const linkified = fn(textNode.textContent, options);
+		const linkified = fn(textNode.textContent!, options);
 		if (linkified.children.length > 0) { // Children are <a>
 			if (fn === linkifyIssues) {
 				// Enable native issue title fetch
-				for (const link of linkified.children) {
+				for (const link of (linkified.children as HTMLCollectionOf<HTMLAnchorElement>)) {
 					const issue = link.href.split('/').pop();
 					link.setAttribute('class', 'issue-link js-issue-link tooltipped tooltipped-ne');
 					link.setAttribute('data-error-text', 'Failed to load issue title');
@@ -48,7 +51,7 @@ export const editTextNodes = (fn, el) => {
 	}
 };
 
-function init() {
+function init(): false | void {
 	const wrappers = select.all(`
 		.blob-wrapper:not(.${linkifiedURLClass}),
 		.comment-body:not(.${linkifiedURLClass})