Fix CLI usage causing a crash

Author: Nixinova

changelog.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## 1.5.5
+*2021-08-15*
+- Fixed a crash occurring when using the CLI.
+
 ## 1.5.4
 *2021-08-15*
 - Fixed CLI options not being able to be negated.

package-lock.json

@@ -1,6 +1,6 @@
 {
 	"name": "linguist-js",
-	"version": "1.5.4",
+	"version": "1.5.5",
 	"description": "Analyse languages used in a folder. Powered by GitHub Linguist, although it doesn't need to be installed.",
 	"main": "dist/index.js",
 	"bin": {

package.json

@@ -36,7 +36,7 @@ for (const arg in args) {
 if (args.analyze) {
 	(async () => {
 		const root = args.analyze === true ? '.' : args.analyze;
-		if (args.ignore[0].match(/(?<!\\)[:;|]/)) args.ignore = args.ignore[0].split(/(?<!\\)[:;|]/);
+		if (args.ignore?.[0].match(/(?<!\\)[:;|]/)) args.ignore = args.ignore[0].split(/(?<!\\)[:;|]/);
 		const { count, languages, results } = await linguist(root, args);
 		if (args.summary) {
 			const { data, markup, programming, prose, total: { bytes: totalBytes } } = languages;