File Content: index.js 'use strict'; const callsites = require('callsites'); module.exports = filePath => { const stacks = callsites(); if (!filePath) { return stacks[2].getFileName(); } let hasSeenValue = false; // Skip the first stack as it's this function stacks.shift(); for (const stack of stacks) { const parentFilePath = stack.getFileName(); if (typeof parentFilePath !== 'string') { continue; } if (parentFilePath === filePath) { hasSeenValue = true; continue; } // Skip native modules if (parentFilePath === 'module.js') { continue; } if (hasSeenValue && parentFilePath !== filePath) { return parentFilePath; } } }; Submit