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https://github.com/isuke/ruby_friendly_error

Make to ruby error messages friendly.
https://github.com/isuke/ruby_friendly_error

ruby

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Make to ruby error messages friendly.

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= RubyFriendlyError image:https://img.shields.io/badge/ruby-2.4.5-cc342d.svg["ruby 2.4.5", link="https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-4-5-released/"] image:https://img.shields.io/badge/ruby-2.5.3-cc342d.svg["ruby 2.5.3", link="https://www.ruby-lang.org/en/news/2018/10/18/ruby-2-5-3-released/"]

image:https://travis-ci.org/isuke/ruby_friendly_error.svg?branch=master["Build Status", link="https://travis-ci.org/isuke/ruby_friendly_error"]

== Installation and Usage

Add this line to your application's Gemfile:

```ruby
gem 'ruby_friendly_error'
```

```sh
$ bundle exec ruby_friendly_error your.rb
```

== Samples

=== miss spell

[source,ruby]
.sample.rb
----
# frozen_string_literal: true

def hoge prayer_life = 100 , player_lifee = 200
puts 'hoge' if player_life > 0
end

hoge
----

```sh
$ bundle exec ruby_friendly_error sample.rb
```

image:https://raw.githubusercontent.com/isuke/ruby_friendly_error/images/name_error_with_did_you_mean.png["name_error_with_did_you_mean", caption="output"]

=== miss args num

[source,ruby]
.sample.rb
----
# frozen_string_literal: true

def hoge arg1, arg2 = 'foobar'
puts arg1
puts arg2
end

hoge 'piyo', 'fuga', 'what!?'
----

```sh
$ bundle exec ruby_friendly_error sample.rb
```

image:https://raw.githubusercontent.com/isuke/ruby_friendly_error/images/wrong_number_of_arguments_error.png["wrong_number_of_arguments_error", caption="output"]

== Options

[cols="1,2,1,1", options="header"]
|===
| key
| description
| values
| default

| RUBY_FRIENDLY_ERROR_LANG
| message language.
| en, ja
| en

| RUBY_FRIENDLY_ERROR_WINDOW
| display error lines window size.
| Integer
| 2
|===

=== RUBY_FRIENDLY_ERROR_LANG

```sh
$ RUBY_FRIENDLY_ERROR_LANG=ja bundle exec ruby_friendly_error sample.rb
```

image:https://raw.githubusercontent.com/isuke/ruby_friendly_error/images/wrong_number_of_arguments_error_ja.png["wrong_number_of_arguments_error_ja", caption="output"]

== Development

After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake spec` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to https://rubygems.org[rubygems.org].

== Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/isuke/ruby_friendly_error. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the http://contributor-covenant.org[Contributor Covenant] code of conduct.

== License

The gem is available as open source under the terms of the https://opensource.org/licenses/MIT[MIT License].

== Code of Conduct

Everyone interacting in the RubyFriendlyError project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the [code of conduct](https://github.com/isuke/ruby_friendly_error/blob/master/CODE_OF_CONDUCT.adoc).