improve the spoon(HoldToQuit) of hammerspoon, the behaviour like Google Chrome`s

HoldToQuit.spoon.lua

--- === HoldToQuit ===
---
--- Instead of pressing ⌘Q, hold ⌘Q to close applications.

local obj = {}
obj.__index = obj

-- Metadata
obj.name = "HoldToQuit"
obj.version = "1.1"
obj.author = "Matthias Strauss <matthias.strauss@mayflower.de>"
obj.github = "@MattFromGer"
obj.homepage = "https://github.com/Hammerspoon/Spoons"
obj.license = "MIT - https://opensource.org/licenses/MIT"
obj.revisor = "DustinLL"

--- HoldToQuit.duration
--- Variable
--- Integer containing the duration (in seconds) how long to hold
--- the hotkey. Default 1.
obj.duration = 0.8

--- HoldToQuit.defaultHotkey
--- Variable
--- Default hotkey mapping
obj.defaultHotkey = {
    quit = { {"cmd"}, "Q" }
}

--- HoldToQuit.hotkeyQbj
--- Variable
--- Hotkey object
obj.hotkeyQbj = nil

--- HoldToQuit.timer
--- Variable
--- Timer for counting the holding time
obj.timer = nil

-- HoldToQuit.ignoreApp
obj.ignoreApp = {
    {name = 'Finder', keep = true},          --- keep, avoid bell
    {name = 'Google Chrome'},                --- use owner setting
    {name = 'Hammerspoon', keep = true},     --- make it safe
}

local delayTimer
local timeStamp

local function gettime()
    return math.floor(hs.timer.absoluteTime() / 1000000)
end

local function hasIgnore(app)
    for _, obj in ipairs(obj.ignoreApp) do 
        if obj.name then
            if string.find(app:path(), '/' .. obj.name) then
                return true, obj
            end
        elseif obj.id then
            if string.find(app:bundleID(), obj.id) then
                return true, obj
            end
        end
    end
    return false, obj
end


--- HoldToQuit.killCurrentApp
--- Method
--- Kill the frontmost application
function obj:killCurrentApp()
    hs.alert.closeAll(0)
    delayTimer:stop()
    local app = hs.application.frontmostApplication()
    app:kill()
end

--- HoldToQuit:init()
--- Method
--- Initialize spoon
function obj:init()
    delayTimer = hs.timer.delayed.new(0.5, function()
        self.timer:stop()
    end)
    self.timer = hs.timer.delayed.new(self.duration, self.killCurrentApp)
end

--- HoldToQuit:onKeyDown()
--- Method
--- Start timer on keyDown
function obj:onKeyDown()
    if self.timer:running() then
        if delayTimer:running() then
            self.timer:stop()
            self:killCurrentApp()
        end
    else
        hs.alert.closeAll(0)
        local app = hs.application.frontmostApplication()
        local flag, obj = hasIgnore(app)
        if flag then
            if obj.keep then return end
            local hotkey = self.defaultHotkey.quit
            hs.eventtap.event.newKeyEvent(hotkey[1], hotkey[2], true):post(app)
            return 
        end

        hs.alert.show(string.format("Hold %s to Quit [%s]", self.hotkeyQbj.idx, app:name()))
        timeStamp = gettime()
        self.timer:start()
    end
end

--- HoldToQuit:onKeyUp()
--- Method
--- Stop Timer & show alert message
function obj:onKeyUp()
    if self.timer:running() then
        local endTime = gettime()
        if (endTime - timeStamp < 200) then
            delayTimer:start()
        else
            self.timer:stop()
        end
    else
        local app = hs.application.frontmostApplication()
        local flag, obj = hasIgnore(app)
        if flag then
            if obj.keep then return end
            local hotkey = self.defaultHotkey.quit
            hs.eventtap.event.newKeyEvent(hotkey[1], hotkey[2], false):post(app)
        end
    end
end

--- HoldToQuit:start()
--- Method
--- Start HoldToQuit with default hotkey
function obj:start()
    if (self.hotkeyQbj) then
        self.hotkeyQbj:enable()
    else
        local mod = self.defaultHotkey["quit"][1]
        local key = self.defaultHotkey["quit"][2]
        self.hotkeyQbj = hs.hotkey.bind(mod, key, function() obj:onKeyDown() end, function() obj:onKeyUp() end)
    end
end

--- HoldToQuit:stop()
--- Method
--- Disable HoldToQuit hotkey
function obj:stop()
    if (self.hotkeyQbj) then
        self.hotkeyQbj:disable()
    end
end

--- HoldToQuit:bindHotkeys(mapping)
--- Method
--- Binds hotkeys for HoldToQuit
---
--- Parameters:
---  * mapping - A table containing hotkey modifier/key details for the following items:
---   * show - This will define the quit hotkey
function obj:bindHotkeys(mapping)
    if (self.hotkeyQbj) then
        self.hotkeyQbj:delete()
    end
    
    local mod = mapping["quit"][1]
    local key = mapping["quit"][2]
    self.hotkeyQbj = hs.hotkey.bind(mod, key, function() obj:onKeyDown() end, function() obj:onKeyUp() end)

    return self
end

return obj

Hi,

Thanks a lot for the help and for the great spoon ! Now it works as expected ! :)