mirror of
https://github.com/joelwmale/webhook-action.git
synced 2024-12-01 11:55:20 +01:00
132 lines
2.7 KiB
Markdown
132 lines
2.7 KiB
Markdown
# 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.
|
|
|
|
[](https://ci.testling.com/substack/json-stable-stringify)
|
|
|
|
[](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
|