add: unit and integration testing

app/node_modules/strip-json-comments/index.d.ts

@@ -0,0 +1,36 @@
+declare namespace stripJsonComments {
+	interface Options {
+		/**
+		Replace comments with whitespace instead of stripping them entirely.
+
+		@default true
+		*/
+		readonly whitespace?: boolean;
+	}
+}
+
+/**
+Strip comments from JSON. Lets you use comments in your JSON files!
+
+It will replace single-line comments `//` and multi-line comments `/**\/` with whitespace. This allows JSON error positions to remain as close as possible to the original source.
+
+@param jsonString - Accepts a string with JSON.
+@returns A JSON string without comments.
+
+@example
+```
+const json = `{
+	// Rainbows
+	"unicorn": "cake"
+}`;
+
+JSON.parse(stripJsonComments(json));
+//=> {unicorn: 'cake'}
+```
+*/
+declare function stripJsonComments(
+	jsonString: string,
+	options?: stripJsonComments.Options
+): string;
+
+export = stripJsonComments;