Index: frontend/node_modules/callsites/index.d.ts
===================================================================
--- frontend/node_modules/callsites/index.d.ts	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/callsites/index.d.ts	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,96 @@
+declare namespace callsites {
+	interface CallSite {
+		/**
+		Returns the value of `this`.
+		*/
+		getThis(): unknown | undefined;
+
+		/**
+		Returns the type of `this` as a string. This is the name of the function stored in the constructor field of `this`, if available, otherwise the object's `[[Class]]` internal property.
+		*/
+		getTypeName(): string | null;
+
+		/**
+		Returns the current function.
+		*/
+		getFunction(): Function | undefined;
+
+		/**
+		Returns the name of the current function, typically its `name` property. If a name property is not available an attempt will be made to try to infer a name from the function's context.
+		*/
+		getFunctionName(): string | null;
+
+		/**
+		Returns the name of the property of `this` or one of its prototypes that holds the current function.
+		*/
+		getMethodName(): string | undefined;
+
+		/**
+		Returns the name of the script if this function was defined in a script.
+		*/
+		getFileName(): string | null;
+
+		/**
+		Returns the current line number if this function was defined in a script.
+		*/
+		getLineNumber(): number | null;
+
+		/**
+		Returns the current column number if this function was defined in a script.
+		*/
+		getColumnNumber(): number | null;
+
+		/**
+		Returns a string representing the location where `eval` was called if this function was created using a call to `eval`.
+		*/
+		getEvalOrigin(): string | undefined;
+
+		/**
+		Returns `true` if this is a top-level invocation, that is, if it's a global object.
+		*/
+		isToplevel(): boolean;
+
+		/**
+		Returns `true` if this call takes place in code defined by a call to `eval`.
+		*/
+		isEval(): boolean;
+
+		/**
+		Returns `true` if this call is in native V8 code.
+		*/
+		isNative(): boolean;
+
+		/**
+		Returns `true` if this is a constructor call.
+		*/
+		isConstructor(): boolean;
+	}
+}
+
+declare const callsites: {
+	/**
+	Get callsites from the V8 stack trace API.
+
+	@returns An array of `CallSite` objects.
+
+	@example
+	```
+	import callsites = require('callsites');
+
+	function unicorn() {
+		console.log(callsites()[0].getFileName());
+		//=> '/Users/sindresorhus/dev/callsites/test.js'
+	}
+
+	unicorn();
+	```
+	*/
+	(): callsites.CallSite[];
+
+	// TODO: Remove this for the next major release, refactor the whole definition to:
+	// declare function callsites(): callsites.CallSite[];
+	// export = callsites;
+	default: typeof callsites;
+};
+
+export = callsites;