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| author | ruki <waruqi@gmail.com> | 2018-11-08 00:38:48 +0800 |
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| committer | ruki <waruqi@gmail.com> | 2018-11-07 21:53:09 +0800 |
| commit | 26105034da4fcce7ac883c899d781f016559310d (patch) | |
| tree | c459a5dc4e3aa0972d9919033ece511ce76dd129 /node_modules/fast-json-stable-stringify/README.md | |
| parent | 2c77f00f1a7ecb6c8192f9c16d3b2001b254a107 (diff) | |
| download | xmake-docs-26105034da4fcce7ac883c899d781f016559310d.tar.gz xmake-docs-26105034da4fcce7ac883c899d781f016559310d.zip | |
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diff --git a/node_modules/fast-json-stable-stringify/README.md b/node_modules/fast-json-stable-stringify/README.md new file mode 100644 index 00000000..0f43b4a7 --- /dev/null +++ b/node_modules/fast-json-stable-stringify/README.md @@ -0,0 +1,119 @@ +# fast-json-stable-stringify + +Deterministic `JSON.stringify()` - a faster version of [@substack](https://github.com/substack)'s json-stable-strigify without [jsonify](https://github.com/substack/jsonify). + +You can also pass in a custom comparison function. + +[](https://travis-ci.org/epoberezkin/fast-json-stable-stringify) +[](https://coveralls.io/github/epoberezkin/fast-json-stable-stringify?branch=master) + +# example + +``` js +var stringify = require('fast-json-stable-stringify'); +var obj = { c: 8, b: [{z:6,y:5,x:4},7], a: 3 }; +console.log(stringify(obj)); +``` + +output: + +``` +{"a":3,"b":[{"x":4,"y":5,"z":6},7],"c":8} +``` + + +# methods + +``` js +var stringify = require('fast-json-stable-stringify') +``` + +## var str = stringify(obj, opts) + +Return a deterministic stringified string `str` from the object `obj`. + + +## options + +### cmp + +If `opts` is given, you can supply an `opts.cmp` to have a custom comparison +function for object keys. Your function `opts.cmp` is called with these +parameters: + +``` js +opts.cmp({ key: akey, value: avalue }, { key: bkey, value: bvalue }) +``` + +For example, to sort on the object key names in reverse order you could write: + +``` js +var stringify = require('fast-json-stable-stringify'); + +var obj = { c: 8, b: [{z:6,y:5,x:4},7], a: 3 }; +var s = stringify(obj, function (a, b) { + return a.key < b.key ? 1 : -1; +}); +console.log(s); +``` + +which results in the output string: + +``` +{"c":8,"b":[{"z":6,"y":5,"x":4},7],"a":3} +``` + +Or if you wanted to sort on the object values in reverse order, you could write: + +``` +var stringify = require('fast-json-stable-stringify'); + +var obj = { d: 6, c: 5, b: [{z:3,y:2,x:1},9], a: 10 }; +var s = stringify(obj, function (a, b) { + return a.value < b.value ? 1 : -1; +}); +console.log(s); +``` + +which outputs: + +``` +{"d":6,"c":5,"b":[{"z":3,"y":2,"x":1},9],"a":10} +``` + +### cycles + +Pass `true` in `opts.cycles` to stringify circular property as `__cycle__` - the result will not be a valid JSON string in this case. + +TypeError will be thrown in case of circular object without this option. + + +# install + +With [npm](https://npmjs.org) do: + +``` +npm install fast-json-stable-stringify +``` + + +# benchmark + +To run benchmark (requires Node.js 6+): +``` +node benchmark +``` + +Results: +``` +fast-json-stable-stringify x 17,189 ops/sec ±1.43% (83 runs sampled) +json-stable-stringify x 13,634 ops/sec ±1.39% (85 runs sampled) +fast-stable-stringify x 20,212 ops/sec ±1.20% (84 runs sampled) +faster-stable-stringify x 15,549 ops/sec ±1.12% (84 runs sampled) +The fastest is fast-stable-stringify +``` + + +# license + +[MIT](https://github.com/epoberezkin/fast-json-stable-stringify/blob/master/LICENSE) |
