flow like the river

BACK_BACK/node_modules/caller-callsite/index.js

@@ -0,0 +1,18 @@
+'use strict';
+const callsites = require('callsites');
+
+module.exports = () => {
+	const c = callsites();
+	let caller;
+
+	for (let i = 0; i < c.length; i++) {
+		const hasReceiver = c[i].getTypeName() !== null;
+
+		if (hasReceiver) {
+			caller = i;
+			break;
+		}
+	}
+
+	return c[caller];
+};