why-is-node-still-running/src/lib/format.ts

Find out exactly why Node is still running.

/*!
 * Copyright 2012  the V8 project  authors. All rights  reserved. Redistribution
 * and  use in  source  and  binary forms,  with  or  without modification,  are
 * permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code  must retain the above copyright notice,
 *       this list of conditions and the following disclaimer.
 *
 *     * Redistributions  in  binary  form must  reproduce  the above  copyright
 *       notice, this list  of conditions  and  the following  disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *
 *     * Neither the name  of Google Inc. nor the names  of its contributors may
 *       be  used to  endorse or  promote  products derived  from this  software
 *       without specific prior written permission.
 *
 * THIS SOFTWARE IS  PROVIDED BY THE COPYRIGHT HOLDERS AND  CONTRIBUTORS "AS IS"
 * AND ANY  EXPRESS OR IMPLIED  WARRANTIES, INCLUDING,  BUT NOT LIMITED  TO, THE
 * IMPLIED WARRANTIES  OF MERCHANTABILITY AND  FITNESS FOR A  PARTICULAR PURPOSE
 * ARE  DISCLAIMED.  IN NO  EVENT  SHALL  THE  COPYRIGHT OWNER  OR  CONTRIBUTORS
 * BE  LIABLE  FOR ANY  DIRECT,  INDIRECT,  INCIDENTAL, SPECIAL,  EXEMPLARY,  OR
 * CONSEQUENTIAL  DAMAGES  (INCLUDING,  BUT   NOT  LIMITED  TO,  PROCUREMENT  OF
 * SUBSTITUTE GOODS  OR SERVICES;  LOSS OF  USE, DATA,  OR PROFITS;  OR BUSINESS
 * INTERRUPTION)  HOWEVER CAUSED  AND ON  ANY  THEORY OF  LIABILITY, WHETHER  IN
 * CONTRACT,  STRICT  LIABILITY, OR  TORT  (INCLUDING  NEGLIGENCE OR  OTHERWISE)
 * ARISING IN ANY  WAY OUT OF THE USE  OF THIS SOFTWARE, EVEN IF  ADVISED OF THE
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export function formatStackTrace(error: any, frames: any): string {
	const lines = [];

	try {
		lines.push(error.toString());
	} catch (e) {
		try {
			lines.push('<error: ' + e + ">");
		} catch (ee) {
			lines.push('<error>');
		}
	}

	for (const frame of frames) {
		let line;
		try {
			line = frame.toString();
		} catch (e) {
			try {
				line = '<error: ' + e + '>';
			} catch (ee) {
				line = '<error>';
			}
		}
		lines.push('    at ' + line);
	}

	return lines.join('\n');
}