A small ruby executable that commits staged changes, computing the commit message so that it closes the issue and follows the Gitmoji convention. Execute it inside of a github repo, or pass owner/repo as an argument to specify a repo explicitly.

close-issue.rb

#!/usr/bin/env ruby

# Install dependencies:
# - gem install tty-prompt
# - gem install pastel
# - https://cli.github.com
# - npm install --global gitmoji-cli; gitmoji -u 
#   (just to get the cached list of gitmojis at ~/.gitmoji/gitmojis.json, 
#    you could write out that file yourself and not install gitmoji-cli)

require "pathname"
require "json"
require "tty-prompt"
require "pastel"

LABEL_TO_GITMOJI = {
  bug: :bug,
  perf: :zap,
  important: :ambulance,
  enhancement: :sparkles,
  feature: :sparkles,
  ui: :lipstick,
  deployment: :rocket,
  testing: :"white-check-mark",
  security: :lock,
  documentation: :memo,
  docs: :memo,
  analytics: :"chart-with-upwards-trend",
  legal: :"page-facing-up",
  "breaking-changes": :boom,
  breaking: :boom,
  accessibility: :wheelchair,
  database: :"card-file-box",
  "easter-egg": :egg,
  seo: :mag,
  typing: :label,
  types: :label,
  cli: :"triangular-flag-on-post",
  flags: :"triangular-flag-on-post",
  flag: :"triangular-flag-on-post",
  errors: :"goal-net",
  auth: :"passport-control",
  authentication: :"passport-control",
  dev: :technologist,
  devx: :technologist,
}

prompt = TTY::Prompt.new active_color: :cyan
pastel = Pastel.new

gitmojis = JSON.load((Pathname.new(Dir.home) / ".gitmoji" / "gitmojis.json").read)
by_name = gitmojis.to_h{|e| [e['name'].to_sym, e]}
issues = JSON.load `gh #{ARGV.first ? "-R " + ARGV.first : ""} issue list --json number,title,labels`
by_number = issues.to_h{|i| [i['number'].to_i, i]}


begin
  choices = issues.map do |i| 
    { 
      name: pastel.cyan.bold("##{i['number']}") + " #{i['title']} " + "[#{i['labels'].map{|l| l['name']}.join "  "}]",
      value: i['number'].to_i 
    }
  end
  issue = by_number[prompt.select("Close issue…", choices, cycle: true, per_page: 15, filter: true, symbols: { marker: pastel.bold("—")})]
  found = nil
  issue['labels'].each do |label|
    name = label['name'].to_sym
    found = LABEL_TO_GITMOJI[name] if LABEL_TO_GITMOJI.has_key? name
  end 
  gitmoji = by_name[found || prompt.select("Select a gitmoji", by_name.keys)]
rescue TTY::Reader::InputInterrupt
  exit 
end

keyword = gitmoji['name'] == "bug" ? "Fixes" : "Closes"
message = "#{gitmoji['emoji']} #{issue['title']} (#{keyword} ##{issue['number']})"

if prompt.yes? "Commit with message \"#{message}\"?"
  `git commit -m "#{message}"`
else
  puts "Cancelled."
end