Package Exports
- fclone
This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (fclone) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.
Readme
FClone
Clone objects by dropping circular references
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+
- micro optimizations
- use of
Array.isArrayandBuffer.isBuffer
Node 0.10 compatible, distributed files are translated to es2015.
Installation
npm install fclone
# or
bower install fcloneUsage
const fclone = require('fclone');
let a = {c: 'hello'};
a.b = a;
let o = fclone(a);
console.log(o);
// outputs: { c: 'hello', b: '[Circular]' }
//JSON.stringify is now safe
console.log(JSON.stringify(o));Benchmarks
Some benchs:
fclone x 17,081 ops/sec ±0.71% (79 runs sampled)
fclone + json.stringify x 9,433 ops/sec ±0.91% (81 runs sampled)
util.inspect (outputs a string) x 2,498 ops/sec ±0.77% (90 runs sampled)
jsan x 5,379 ops/sec ±0.82% (91 runs sampled)
circularjson x 4,719 ops/sec ±1.16% (91 runs sampled)
deepcopy x 5,478 ops/sec ±0.77% (86 runs sampled)
json-stringify-safe x 5,828 ops/sec ±1.30% (84 runs sampled)
clone x 8,713 ops/sec ±0.68% (88 runs sampled)
Fastest is util.format (outputs a string)