Simplify error handling

dangerfile.js

@@ -1,7 +1,7 @@
-const { danger, markdown } = require('danger');
+const { markdown } = require('danger');
 const fs = require('fs').promises;
 const gzipSize = require('gzip-size');
-const git = require('simple-git/promise')(__dirname);
+const git = require('simple-git/promise')(__dirname).silent(true);
 
 // https://stackoverflow.com/questions/15900485/correct-way-to-convert-size-in-bytes-to-kb-mb-gb-in-javascript
 const formatBytes = (bytes, decimals = 2) => {
@@ -56,34 +56,36 @@ const handleRenamedError = (file, type) => async err => {
 	throw err;
 }
 
-const run = async () => {
-	const minified = [
-		...danger.git.modified_files.map(file => ({ file, type: 'modified' })),
-		...danger.git.deleted_files.map(file => ({ file, type: 'deleted' })),
-		...danger.git.created_files.map(file => ({ file, type: 'created' })),
-	].filter(({ file }) => file.includes('.min.js'));
+const getChangedMinifiedFiles = async () => {
+	const result = await git.diff(['--name-only', '--no-renames', 'master...']);
 
-	if (minified.length === 0) {
-		markdown(`## No JS Changes`);
-		return;
-	}
+	return result
+		? result.split(/\r?\n/g).filter(file => file.includes('.min.js'))
+		: [];
+};
 
+const run = async () => {
 	// Check if master exists & check it out if not.
 	const result = await git.branch(['--list', 'master']);
 	if (result.all.length === 0) {
 		await git.branch(['master', 'origin/master']);
 	}
 
+	const minified = await getChangedMinifiedFiles();
+
+	if (minified.length === 0) {
+		markdown(`## No JS Changes`);
+		return;
+	}
+
 	const rows = [];
 	let totalFileSize = 0;
 	let totalMasterFileSize = 0;
 
-	for (const { file, type } of minified) {
+	for (const file of minified) {
 		const [fileContents, fileMasterContents] = await Promise.all([
-			type !== 'deleted' ? fs.readFile(file, 'utf-8') : Promise.resolve(''),
-			type !== 'created' ?
-				git.show([`master:${file}`]).catch(handleRenamedError(file, type)) :
-				Promise.resolve(''),
+			fs.readFile(file, 'utf-8').catch(() => ''),
+			git.show([`master:${file}`]).catch(() => ''),
 		]);
 
 		const [fileSize, fileMasterSize] = await Promise.all([