--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/error_log.js.luan	Fri Jul 11 20:57:49 2025 -0600
@@ -0,0 +1,60 @@
+local Luan = require "luan:Luan.luan"
+local error = Luan.error
+local String = require "luan:String.luan"
+local trim = String.trim or error()
+local regex = String.regex or error()
+local contains = String.contains or error()
+local Table = require "luan:Table.luan"
+local concat = Table.concat or error()
+local Http = require "luan:http/Http.luan"
+local Logging = require "luan:logging/Logging.luan"
+local logger = Logging.logger "error_log.js"
+
+
+local bad_agents = {
+	[[Googlebot]]
+	[[GSA/]]
+	[[Mobile/15E148 Instagram]]
+	[[Firefox/]]
+	[[VivoBrowser/]]
+	[[Chrome/(4\d|5\d|70|83|86|87|94)\.]]
+	[[musical_ly_2\d\.]]
+}
+local bad_agents_ptn = regex(concat(bad_agents,"|"))
+
+local bad_contents = {
+	[[\Qchrome-extension://\E]]
+	[[\Q@webkit-masked-url://hidden/\E]]
+	[[\Qanalytics.tiktok.com\E]]
+	[[\QStrict mode does not allow function declarations in a lexically nested statement.\E]]
+	[[\QFailed to set the 'currentTime' property on 'HTMLMediaElement': The provided double value is non-finite.\E]]
+	[[\QThe element has no supported sources.\E]]
+	[[\QThe play() request was interrupted by a call to pause().\E]]
+	[[\QReferenceError: Can't find variable: _AutofillCallbackHandler\E]]
+	[[\QUtilityScript\E]]
+	[[\QscrollReadRandom\E]]
+	[[\QdoGameClick\E]]
+	[[\Qurl = undefined\E]]
+	[[\QFailed to set remote answer sdp: The order of m-lines in answer doesn't match order in offer. Rejecting answer.\E]]
+}
+local bad_contents_ptn = regex(concat(bad_contents,"|"))
+
+local function priority(err)
+	local agent = Http.request.headers["user-agent"]
+	if agent~=nil and bad_agents_ptn.matches(agent) then return "info" end
+	if bad_contents_ptn.matches(err) then return "info" end
+	local x_requested_with = Http.request.headers["X-Requested-With"]
+	if x_requested_with ~= nil then
+		return "info"
+	end
+	return "error"
+end
+
+return function()
+	local err = Http.request.parameters.err
+	if err == nil then
+		return  -- stupid bots
+	end
+	local call = priority(err)
+	logger[call](trim(err).."\n"..trim(Http.request.raw_head).."\n")
+end