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node_modules

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language: node_js
node_js:
- "0.8"
- "0.10"

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This software is released under the MIT license:
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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var stringify = require('../');
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);

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var stringify = require('../');
var obj = { c: 8, b: [{z:6,y:5,x:4},7], a: 3 };
console.log(stringify(obj));

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var stringify = require('../');
var obj = { c: 6, b: [4,5], a: 3 };
console.log(stringify(obj));

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var stringify = require('../');
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);

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module.exports = function (obj, opts) {
if (!opts) opts = {};
if (typeof opts === 'function') opts = { cmp: opts };
var space = opts.space || '';
if (typeof space === 'number') space = Array(space+1).join(' ');
var cycles = (typeof opts.cycles === 'boolean') ? opts.cycles : false;
var replacer = opts.replacer || function(key, value) { return value; };
var cmp = opts.cmp && (function (f) {
return function (node) {
return function (a, b) {
var aobj = { key: a, value: node[a] };
var bobj = { key: b, value: node[b] };
return f(aobj, bobj);
};
};
})(opts.cmp);
var seen = [];
return (function stringify (parent, key, node, level) {
var indent = space ? ('\n' + new Array(level + 1).join(space)) : '';
var colonSeparator = space ? ': ' : ':';
if (node && node.toJSON && typeof node.toJSON === 'function') {
node = node.toJSON();
}
node = replacer.call(parent, key, node);
if (node === undefined) {
return;
}
if (typeof node !== 'object' || node === null) {
return JSON.stringify(node);
}
if (isArray(node)) {
var out = [];
for (var i = 0; i < node.length; i++) {
var item = stringify(node, i, node[i], level+1) || JSON.stringify(null);
out.push(indent + space + item);
}
return '[' + out.join(',') + indent + ']';
}
else {
if (seen.indexOf(node) !== -1) {
if (cycles) return JSON.stringify('__cycle__');
throw new TypeError('Converting circular structure to JSON');
}
else seen.push(node);
var keys = objectKeys(node).sort(cmp && cmp(node));
var out = [];
for (var i = 0; i < keys.length; i++) {
var key = keys[i];
var value = stringify(node, key, node[key], level+1);
if(!value) continue;
var keyValue = JSON.stringify(key)
+ colonSeparator
+ value;
;
out.push(indent + space + keyValue);
}
seen.splice(seen.indexOf(node), 1);
return '{' + out.join(',') + indent + '}';
}
})({ '': obj }, '', obj, 0);
};
var isArray = Array.isArray || function (x) {
return {}.toString.call(x) === '[object Array]';
};
var objectKeys = Object.keys || function (obj) {
var has = Object.prototype.hasOwnProperty || function () { return true };
var keys = [];
for (var key in obj) {
if (has.call(obj, key)) keys.push(key);
}
return keys;
};

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{
"name": "json-stable-stringify-without-jsonify",
"version": "1.0.1",
"description": "deterministic JSON.stringify() with custom sorting to get deterministic hashes from stringified results, with no public domain dependencies",
"main": "index.js",
"dependencies": {
},
"devDependencies": {
"tape": "~1.0.4"
},
"scripts": {
"test": "tape test/*.js"
},
"testling": {
"files": "test/*.js",
"browsers": [
"ie/8..latest",
"ff/5", "ff/latest",
"chrome/15", "chrome/latest",
"safari/latest",
"opera/latest"
]
},
"repository": {
"type": "git",
"url": "git://github.com/samn/json-stable-stringify.git"
},
"homepage": "https://github.com/samn/json-stable-stringify",
"keywords": [
"json",
"stringify",
"deterministic",
"hash",
"sort",
"stable"
],
"author": {
"name": "James Halliday",
"email": "mail@substack.net",
"url": "http://substack.net"
},
"license": "MIT"
}

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# json-stable-stringify
This is the same as https://github.com/substack/json-stable-stringify but it doesn't depend on libraries without licenses (jsonify).
deterministic version of `JSON.stringify()` so you can get a consistent hash
from stringified results
You can also pass in a custom comparison function.
[![browser support](https://ci.testling.com/substack/json-stable-stringify.png)](https://ci.testling.com/substack/json-stable-stringify)
[![build status](https://secure.travis-ci.org/substack/json-stable-stringify.png)](http://travis-ci.org/substack/json-stable-stringify)
# example
``` js
var stringify = require('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('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('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('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}
```
### space
If you specify `opts.space`, it will indent the output for pretty-printing.
Valid values are strings (e.g. `{space: \t}`) or a number of spaces
(`{space: 3}`).
For example:
```js
var obj = { b: 1, a: { foo: 'bar', and: [1, 2, 3] } };
var s = stringify(obj, { space: ' ' });
console.log(s);
```
which outputs:
```
{
"a": {
"and": [
1,
2,
3
],
"foo": "bar"
},
"b": 1
}
```
### replacer
The replacer parameter is a function `opts.replacer(key, value)` that behaves
the same as the replacer
[from the core JSON object](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Using_native_JSON#The_replacer_parameter).
# install
With [npm](https://npmjs.org) do:
```
npm install json-stable-stringify
```
# license
MIT

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var test = require('tape');
var stringify = require('../');
test('custom comparison function', function (t) {
t.plan(1);
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;
});
t.equal(s, '{"c":8,"b":[{"z":6,"y":5,"x":4},7],"a":3}');
});

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var test = require('tape');
var stringify = require('../');
test('nested', function (t) {
t.plan(1);
var obj = { c: 8, b: [{z:6,y:5,x:4},7], a: 3 };
t.equal(stringify(obj), '{"a":3,"b":[{"x":4,"y":5,"z":6},7],"c":8}');
});
test('cyclic (default)', function (t) {
t.plan(1);
var one = { a: 1 };
var two = { a: 2, one: one };
one.two = two;
try {
stringify(one);
} catch (ex) {
t.equal(ex.toString(), 'TypeError: Converting circular structure to JSON');
}
});
test('cyclic (specifically allowed)', function (t) {
t.plan(1);
var one = { a: 1 };
var two = { a: 2, one: one };
one.two = two;
t.equal(stringify(one, {cycles:true}), '{"a":1,"two":{"a":2,"one":"__cycle__"}}');
});
test('repeated non-cyclic value', function(t) {
t.plan(1);
var one = { x: 1 };
var two = { a: one, b: one };
t.equal(stringify(two), '{"a":{"x":1},"b":{"x":1}}');
});
test('acyclic but with reused obj-property pointers', function (t) {
t.plan(1);
var x = { a: 1 }
var y = { b: x, c: x }
t.equal(stringify(y), '{"b":{"a":1},"c":{"a":1}}');
});

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var test = require('tape');
var stringify = require('../');
test('replace root', function (t) {
t.plan(1);
var obj = { a: 1, b: 2, c: false };
var replacer = function(key, value) { return 'one'; };
t.equal(stringify(obj, { replacer: replacer }), '"one"');
});
test('replace numbers', function (t) {
t.plan(1);
var obj = { a: 1, b: 2, c: false };
var replacer = function(key, value) {
if(value === 1) return 'one';
if(value === 2) return 'two';
return value;
};
t.equal(stringify(obj, { replacer: replacer }), '{"a":"one","b":"two","c":false}');
});
test('replace with object', function (t) {
t.plan(1);
var obj = { a: 1, b: 2, c: false };
var replacer = function(key, value) {
if(key === 'b') return { d: 1 };
if(value === 1) return 'one';
return value;
};
t.equal(stringify(obj, { replacer: replacer }), '{"a":"one","b":{"d":"one"},"c":false}');
});
test('replace with undefined', function (t) {
t.plan(1);
var obj = { a: 1, b: 2, c: false };
var replacer = function(key, value) {
if(value === false) return;
return value;
};
t.equal(stringify(obj, { replacer: replacer }), '{"a":1,"b":2}');
});
test('replace with array', function (t) {
t.plan(1);
var obj = { a: 1, b: 2, c: false };
var replacer = function(key, value) {
if(key === 'b') return ['one', 'two'];
return value;
};
t.equal(stringify(obj, { replacer: replacer }), '{"a":1,"b":["one","two"],"c":false}');
});
test('replace array item', function (t) {
t.plan(1);
var obj = { a: 1, b: 2, c: [1,2] };
var replacer = function(key, value) {
if(value === 1) return 'one';
if(value === 2) return 'two';
return value;
};
t.equal(stringify(obj, { replacer: replacer }), '{"a":"one","b":"two","c":["one","two"]}');
});

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var test = require('tape');
var stringify = require('../');
test('space parameter', function (t) {
t.plan(1);
var obj = { one: 1, two: 2 };
t.equal(stringify(obj, {space: ' '}), ''
+ '{\n'
+ ' "one": 1,\n'
+ ' "two": 2\n'
+ '}'
);
});
test('space parameter (with tabs)', function (t) {
t.plan(1);
var obj = { one: 1, two: 2 };
t.equal(stringify(obj, {space: '\t'}), ''
+ '{\n'
+ '\t"one": 1,\n'
+ '\t"two": 2\n'
+ '}'
);
});
test('space parameter (with a number)', function (t) {
t.plan(1);
var obj = { one: 1, two: 2 };
t.equal(stringify(obj, {space: 3}), ''
+ '{\n'
+ ' "one": 1,\n'
+ ' "two": 2\n'
+ '}'
);
});
test('space parameter (nested objects)', function (t) {
t.plan(1);
var obj = { one: 1, two: { b: 4, a: [2,3] } };
t.equal(stringify(obj, {space: ' '}), ''
+ '{\n'
+ ' "one": 1,\n'
+ ' "two": {\n'
+ ' "a": [\n'
+ ' 2,\n'
+ ' 3\n'
+ ' ],\n'
+ ' "b": 4\n'
+ ' }\n'
+ '}'
);
});
test('space parameter (same as native)', function (t) {
t.plan(1);
// for this test, properties need to be in alphabetical order
var obj = { one: 1, two: { a: [2,3], b: 4 } };
t.equal(stringify(obj, {space: ' '}), JSON.stringify(obj, null, ' '));
});

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var test = require('tape');
var stringify = require('../');
test('simple object', function (t) {
t.plan(1);
var obj = { c: 6, b: [4,5], a: 3, z: null };
t.equal(stringify(obj), '{"a":3,"b":[4,5],"c":6,"z":null}');
});
test('object with undefined', function (t) {
t.plan(1);
var obj = { a: 3, z: undefined };
t.equal(stringify(obj), '{"a":3}');
});
test('array with undefined', function (t) {
t.plan(1);
var obj = [4, undefined, 6];
t.equal(stringify(obj), '[4,null,6]');
});
test('object with empty string', function (t) {
t.plan(1);
var obj = { a: 3, z: '' };
t.equal(stringify(obj), '{"a":3,"z":""}');
});
test('array with empty string', function (t) {
t.plan(1);
var obj = [4, '', 6];
t.equal(stringify(obj), '[4,"",6]');
});

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var test = require('tape');
var stringify = require('../');
test('toJSON function', function (t) {
t.plan(1);
var obj = { one: 1, two: 2, toJSON: function() { return { one: 1 }; } };
t.equal(stringify(obj), '{"one":1}' );
});
test('toJSON returns string', function (t) {
t.plan(1);
var obj = { one: 1, two: 2, toJSON: function() { return 'one'; } };
t.equal(stringify(obj), '"one"');
});
test('toJSON returns array', function (t) {
t.plan(1);
var obj = { one: 1, two: 2, toJSON: function() { return ['one']; } };
t.equal(stringify(obj), '["one"]');
});