feat: add ability to filter flutter output in dev log (#371)

README.md

@@ -240,6 +240,9 @@ require("flutter-tools").setup {
   },
   dev_log = {
     enabled = true,
+    filter = nil, -- optional callback to filter the log
+    -- takes a log_line as string argument; returns a boolean or nil;
+    -- the log_line is only added to the output if the function returns true
     notify_errors = false, -- if there is an error whilst running then notify the user
     open_cmd = "tabedit", -- command to use to open the log buffer
   },

lua/flutter-tools/config.lua

@@ -128,6 +128,7 @@ local config = {
     __index = function(_, k) return k == "open_cmd" and get_split_cmd(0.3, 40) or nil end,
   }),
   dev_log = setmetatable({
+    filter = nil,
     enabled = true,
     notify_errors = false,
   }, {

lua/flutter-tools/log.lua

@@ -87,6 +87,7 @@ end
 function M.log(data, opts)
   if opts.enabled then
     if not exists() then create(opts) end
+    if opts.filter and not opts.filter(data) then return end
     append(M.buf, { data })
     autoscroll(M.buf, M.win)
   end