circular-json-es6

circular JSON.stringify and JSON.parse, for environments with native ES6 Map

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circular-json-es6
A replacement for JSON.stringify and JSON.parse that can handle circular references (persists reference structure).
This implementation requires environments with native ES6 Map support, but is decently faster than circular-json (see benchmark with npm run bench).
var CircularJSON = require('circular-json-es6')

var obj = {}
obj.a = obj

var clone = CircularJSON.parse(CircularJSON.stringify(obj))

clone.a === clone // -> true

NOTE

The default stringify method optimizes for cases where no circular reference is present by trying a plain JSON.stringify first. This means if no circular references are found in the data then it will not persist multiple (but non-circular) references to the same object.
If you want to enforce reference persistence, use CircularJSON.stringifyStrict instead.