denoland/deno · error

invalid log level {log_level}

Error message

invalid log level {log_level}

What it means

Error "invalid log level {log_level}" thrown in denoland/deno.

Source

Thrown at cli/tools/installer/global.rs:940

  let mut executable_args = vec!["run".to_string()];
  executable_args.extend_from_slice(&flags.to_permission_args());
  if let Some(url) = flags.location.as_ref() {
    executable_args.push("--location".to_string());
    executable_args.push(url.to_string());
  }
  if let Some(deno_lib::args::CaData::File(ca_file)) = &flags.ca_data {
    executable_args.push("--cert".to_string());
    executable_args.push(ca_file.to_owned())
  }
  if let Some(log_level) = flags.log_level {
    if log_level == Level::Error {
      executable_args.push("--quiet".to_string());
    } else {
      executable_args.push("--log-level".to_string());
      let log_level = match log_level {
        Level::Debug => "debug",
        Level::Info => "info",
        _ => return Err(anyhow!(format!("invalid log level {log_level}"))),
      };
      executable_args.push(log_level.to_string());
    }
  }

  // we should avoid a default branch here to ensure we continue to cover any
  // changes to this flag.
  match flags.type_check_mode {
    TypeCheckMode::All => executable_args.push("--check=all".to_string()),
    TypeCheckMode::None => {}
    TypeCheckMode::Local => executable_args.push("--check".to_string()),
  }

  for feature in &flags.unstable_config.features {
    executable_args.push(format!("--unstable-{}", feature));
  }

  if flags.no_remote {

View on GitHub (pinned to 89f33cbef2)

When it happens

Trigger: Thrown at cli/tools/installer/global.rs:940 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of denoland/deno@89f33cbef2 (2026-08-16). Data as JSON: /api/errors/7793f2ae633fa214. Report an issue: GitHub.