It appears that the repository has undergone several changes and renamings:

backend/node_modules/shebang-regex/index.d.ts

@@ -1,22 +0,0 @@
-/**
-Regular expression for matching a [shebang](https://en.wikipedia.org/wiki/Shebang_(Unix)) line.
-
-@example
-```
-import shebangRegex = require('shebang-regex');
-
-const string = '#!/usr/bin/env node\nconsole.log("unicorns");';
-
-shebangRegex.test(string);
-//=> true
-
-shebangRegex.exec(string)[0];
-//=> '#!/usr/bin/env node'
-
-shebangRegex.exec(string)[1];
-//=> '/usr/bin/env node'
-```
-*/
-declare const shebangRegex: RegExp;
-
-export = shebangRegex;