Node Assertion Error Formatter

Format errors to display a diff between the actual and expected

Originally extracted from mocha

Usage

``js
import {format} from 'assertion-error-formatter'

format(error)
`

API Reference

#### format(error [, options])

* error: a javascript error
* options: An object with the following keys:
* colorFns: An object with the keys 'diffAdded', 'diffRemoved', 'errorMessage', 'errorStack'. The values are functions to colorize a string, each defaults to identity.
* inlineDiff`: boolean (default: false)
* toggle between inline and unified diffs