Package Exports

pretty-format

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 objects, arrays (and typed arrays and array buffers), arguments, booleans, dates, errors, functions, Infinity, maps, NaN, null, numbers, regular expressions, sets, strings, symbols, undefined, weak maps, weak sets, and circular data structures.

Installation

$ npm install pretty-format

Usage

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"
}

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 {}
// }