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33 lines
783 B
JavaScript
33 lines
783 B
JavaScript
6 months ago
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/**
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* Check circular references.
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*
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* @param ref A function that returns an alternative reference.
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* @param methods A boolean that indicates functions should be
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* coerced to strings.
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*/
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function circular(ref, methods) {
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ref = ref || '[Circular]';
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var seen = [];
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return function (key, val) {
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if(typeof val === 'function' && methods) {
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val = val.toString();
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}
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if(!val || typeof (val) !== 'object') {
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return val;
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}
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if(~seen.indexOf(val)) {
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if(typeof ref === 'function') return ref(val);
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return ref;
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}
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seen.push(val);
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return val;
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};
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}
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function stringify(obj, indent, ref, methods) {
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return JSON.stringify(obj, circular(ref, methods), indent);
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}
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module.exports = circular;
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module.exports.stringify = stringify;
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