Package Exports
- pretty-format
- pretty-format/plugins/ReactTestComponent
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 (pretty-format) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.
Readme
pretty-format 
Stringify any JavaScript value.
- Supports all built-in JavaScript types
- Blazingly fast (similar performance to v8's
JSON.stringifyand significantly faster than Node'sutil.format) - Plugin system for extending with custom types (i.e.
ReactTestComponent)
Installation
$ npm install pretty-formatUsage
var prettyFormat = require('pretty-format');
var obj = { property: {} };
obj.circularReference = obj;
obj[Symbol('foo')] = 'foo';
obj.map = new Map();
obj.map.set('prop', 'value');
obj.array = [1, NaN, Infinity];
console.log(prettyFormat(obj));Result:
Object {
"property": Object {},
"circularReference": [Circular],
"map": Map {
"prop" => "value"
},
"array": Array [
1,
NaN,
Infinity
],
Symbol(foo): "foo"
}Type Support
Object, Array, ArrayBuffer, DataView, Float32Array, Float64Array, Int8Array, Int16Array, Int32Array, Uint8Array, Uint8ClampedArray, Uint16Array, Uint32Array, arguments, Boolean, Date, Error, Function, Infinity, Map, NaN, null, Number, RegExp, Set, String, Symbol, undefined, WeakMap, WeakSet
Plugins
Pretty format also supports adding plugins:
var fooPlugin = {
test: function(val) {
return val && val.hasOwnProperty('foo');
},
print: function(val, print, indent) {
return 'Foo: ' + print(val.foo);
}
};
var obj = { foo: { bar: {} } };
prettyFormat(obj, {
plugins: [fooPlugin]
});
// Foo: Object {
// "bar": Object {}
// }ReactTestComponent plugin
var prettyFormat = require('pretty-format');
var reactPlugin = require('pretty-format/plugins/ReactTestComponent');
var React = require('react');
var renderer = require('react/lib/ReactTestRenderer');
var jsx = React.createElement('h1', null, 'Hello World');
prettyFormat(renderer.create(jsx).toJSON(), {
plugins: [reactPlugin]
});
// <h1>
// Hello World
// </h1>