denoland/deno · error

No version matching '{req_str}' for {registry_name}

Error message

No version matching '{req_str}' for {registry_name}

What it means

Error "No version matching '{req_str}' for {registry_name}" thrown in denoland/deno.

Source

Thrown at cli/tools/installer/npm_compat.rs:1486

        .map_err(|e| anyhow!("Invalid version req '{req_str}': {e}"))?;

      let versions = metadata
        .get("versions")
        .and_then(|vs| vs.as_object())
        .ok_or_else(|| anyhow!("No versions for {registry_name}"))?;

      let mut best: Option<Version> = None;
      for key in versions.keys() {
        if let Ok(v) = Version::parse_standard(key)
          && version_req.matches(&v)
          && best.as_ref().is_none_or(|b| v > *b)
        {
          best = Some(v);
        }
      }

      best.map(|v| v.to_string()).ok_or_else(|| {
        anyhow!("No version matching '{req_str}' for {registry_name}")
      })
    }
  }
}

#[cfg(test)]
mod tests {
  use super::*;

  #[test]
  fn test_scheme_package_name() {
    assert_eq!(
      scheme_package_name("jsr:@fresh/core@^2.0.0").as_deref(),
      Some("@fresh/core")
    );
    assert_eq!(scheme_package_name("npm:chalk@5").as_deref(), Some("chalk"));
    assert_eq!(
      scheme_package_name("npm:@scope/pkg@1.2.3").as_deref(),

View on GitHub (pinned to 89f33cbef2)

When it happens

Trigger: Thrown at cli/tools/installer/npm_compat.rs:1486 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/a04ddde8716e81b7. Report an issue: GitHub.