visual studio code - VSCODE task.json keep accumulating error message when `isWatching=true` -


below setup of tasks.json

{ // see https://go.microsoft.com/fwlink/?linkid=733558 // documentation tasks.json format "version": "0.1.0", "command": "node", "options": {     "cwd": "${workspaceroot}"  }, "isshellcommand": true,     "args": ["./watcher.js"], "showoutput": "always",  "iswatching": true, "problemmatcher": {         "filelocation": "absolute",         "owner": "ocaml",         "pattern": [{             "regexp": "^file \"(.*)\", line (\\d+)(?:, characters (\\d+)-(\\d+))?:$",             "file": 1,             "line": 2,             "column": 3,             "endcolumn": 4         }, {             "regexp": "^(?:(?:parse\\s+)?(warning|[ee]rror)(?:\\s+\\d+)?:)?\\s+(.*)$",             "severity": 1,             "message": 2,             "loop": true         }]     }

}

however, in error panel, error output keep accumulated, old errors still there, did miss anything

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