debugger.js

// get the call stack
Object.defineProperty ( global, '__stack', {
	get: function () {
		var orig = Error.prepareStackTrace;
		Error.prepareStackTrace = function ( _, stack ) {
			return stack;
		};
		var err = new Error;
		Error.captureStackTrace ( err, arguments.callee );
		var stack = err.stack;
		Error.prepareStackTrace = orig;
		return stack;
	}
} );

// filter out file paths which should not be present in the printed call stack
let _pathFilter = [
	'/node_modules/',
	'/helpers/debugger'
];

// filter out some functions which should not be present in the printed call stack
let _functionFilter = [
	'handleReject'
];

// @stacksize - how many lines of stack to print out
// @shorten - how many character to keep from the filepath (path prefix ellipsis)
// Print out the callstack up until this call - filter and format as per required
global.__caller = ( stacksize = 3, shorten = 45 ) => {
	return __stack
	// remove/filter some paths
		.filter ( v => !(v.getFileName () || '').match( _pathFilter.join('|') ) )
		// remove/filter some function names
		.filter ( v => !(v.getFunctionName () || '').match( _functionFilter.join('|') ) )
		// only print out a few lines
		.slice ( 0, stacksize )
		// format printing
		.map ( v => v.getFunctionName () + ', '
			+ (v.getFileName () || '').replace ( new RegExp ( `^(.*)(.{${shorten}})$` ), '...$2' )
			+ ':' + v.getLineNumber () ).join('\n');
};