This app provides monitoring and information features for the common freifunk user and the technical stuff of a freifunk community.
Code base is taken from a TUM Practical Course project and added here to see if Freifunk Altdorf can use it.
https://www.freifunk-altdorf.de
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48 lines
1.2 KiB
48 lines
1.2 KiB
6 years ago
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/**
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* Copyright (c) 2015-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @providesModule stringifySafe
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* @flow
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*/
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'use strict';
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/**
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* Tries to stringify with JSON.stringify and toString, but catches exceptions
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* (e.g. from circular objects) and always returns a string and never throws.
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*/
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function stringifySafe(arg: any): string {
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var ret;
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var type = typeof arg;
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if (arg === undefined) {
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ret = 'undefined';
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} else if (arg === null) {
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ret = 'null';
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} else if (type === 'string') {
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ret = '"' + arg + '"';
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} else if (type === 'function') {
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try {
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ret = arg.toString();
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} catch (e) {
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ret = '[function unknown]';
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}
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} else {
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// Perform a try catch, just in case the object has a circular
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// reference or stringify throws for some other reason.
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try {
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ret = JSON.stringify(arg);
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} catch (e) {
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if (typeof arg.toString === 'function') {
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try {
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ret = arg.toString();
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} catch (E) {}
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}
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}
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}
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return ret || '["' + type + '" failed to stringify]';
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}
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module.exports = stringifySafe;
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