This module clones a Javascript object in safe mode (eg: drops circular values) recursively. Circular values are replaced with a string: '[Circular]'.
Ideas from tracker1/safe-clone-deep. I improved the workflow a bit by:
- refactoring the code (complete rewrite)
- fixing node 6+
- minor performance tweaks
- use of
Array.isArrayandBuffer.isBuffer
npm install fclone
# or
bower install fcloneconst fclone = require('fclone')
let a = {c: 'hello'}
a.b = a
let o = fclone(a)
console.log(o)
// outputs: { c: 'hello', b: '[Circular]' }Some benchs:
fclone x 13,342 ops/sec ±3.83% (79 runs sampled)
fclone + json.stringify x 7,311 ops/sec ±3.99% (77 runs sampled)
jsan x 4,419 ops/sec ±3.11% (86 runs sampled)
circularjson x 4,294 ops/sec ±0.82% (91 runs sampled)
deepcopy x 5,298 ops/sec ±0.76% (83 runs sampled)
json-stringify-safe x 5,201 ops/sec ±0.82% (84 runs sampled)
Fastest is fclone
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