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name: issue-triage description: Triage a Deno GitHub issue — reproduce bugs, classify, label, and comment with findings. Use when asked to triage an issue or when an issue number/URL is provided for triage. argument-hint: <issue-number-or-url> allowed-tools: Bash(gh *) Bash(deno *) Bash(git *) Bash(mktemp *) Bash(rm *) Bash(cat *) Read Write Glob Grep Agent

Deno Issue Triage

Triage issue $ARGUMENTS on the denoland/deno repository.

Step 1: Read the issue

gh issue view $ARGUMENTS --repo denoland/deno --json number,title,body,author,labels,state,comments,createdAt,url

Step 2: Classify the issue

Determine what kind of issue this is:

• Bug report — something isn't working as expected
• Feature request / suggestion — a new capability or enhancement
• Question — a usage question, not a bug
• Duplicate — already reported (search closed and open issues with gh issue list --search "keywords" --state all)
• Invalid — not actionable, not a Deno issue, or insufficient info

If the issue is clearly a question, duplicate, or invalid, skip reproduction and go straight to Step 5.

Step 3: Check for missing information

A valid bug report needs:

• Deno version (deno --version output)
• Operating system
• Reproduction steps or minimal reproduction code
• Expected behavior vs actual behavior

If any of these are missing, label as needs info and comment asking the author to provide the missing details. Do not attempt reproduction without a clear repro case.

Step 4: Reproduce the bug

Only attempt reproduction for bug reports that have a clear repro case.

Setup

Prefer running reproductions inside a Docker container for isolation. Fall back to a local temp directory only if Docker is unavailable.

Docker (preferred):

# Run repro with latest canary
docker run --rm -v "$REPRO_DIR":/repro -w /repro denoland/deno:canary deno run repro.ts

# Run repro with a specific version (e.g., 2.1.4)
docker run --rm -v "$REPRO_DIR":/repro -w /repro denoland/deno:2.1.4 deno run repro.ts

Use docker run --rm so containers are cleaned up automatically. Mount the repro files via -v.

Local fallback (if Docker is not available):

REPRO_DIR=$(mktemp -d)
deno run "$REPRO_DIR/repro.ts"

Get Deno versions

Try to reproduce with both:

1. The version from the issue (if specified) — to confirm the bug exists
2. Latest canary — to check if it's already fixed

Use the appropriate Docker image tag for each version (e.g., denoland/deno:2.1.4, denoland/deno:canary).

If the issue specifies a particular Deno version and the bug does NOT reproduce on canary, note that it may already be fixed. Check git log for relevant fixes.

Run the reproduction

• Extract the reproduction code from the issue body
• Write it to a local temp directory
• Run it inside a Docker container (or locally as fallback) with the appropriate deno subcommand and flags
• Capture both stdout and stderr
• Compare actual output against the expected behavior described in the issue

If the reproduction involves specific npm packages, deno.json config, or multi-file setups, recreate the full environment as described.

Clean up

rm -rf "$REPRO_DIR"

Record findings

Note:

• Does the bug reproduce on the reported version?
• Does the bug reproduce on canary?
• Any additional observations (e.g., different error message, partial fix, related issues)

Step 5: Label the issue

Add labels based on your classification. Keep it minimal — usually a single area label is sufficient. Do not over-label.

Type labels (add one if applicable)

| Label | When to use | | ------------ | --------------------------------------------------- | | bug | Confirmed bug — always add for verified bug reports | | feat | Accepted new feature | | suggestion | Feature request not yet accepted | | question | Usage question | | duplicate | Duplicate of another issue | | invalid | Not actionable | | panic | Deno panics/crashes | | regression | Something that used to work but is now broken |

Area labels (add one that best matches)

| Label | Area | | -------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------- | | node compat | General Node.js compatibility | | node API | Specific node:* module APIs | | ext/node, ext/fs, ext/net, ext/http, ext/fetch, ext/web, ext/crypto, ext/console, ext/url, ext/websocket, ext/kv | Specific extension | | cli | CLI behavior, flags, subcommands | | lsp | Language server | | runtime | Runtime crate | | permissions | Permission system | | compile | deno compile | | testing | deno test and coverage | | task runner | deno task | | install | deno install / deno add | | tsc | TypeScript compiler | | types | TypeScript type issues | | config | deno.json configuration | | node resolution | Node/npm module resolution | | publish | deno publish | | lint | deno lint | | wasm | WebAssembly |

Priority labels (add only when clearly warranted)

| Label | When to use | | --------------- | ------------------------------------------- | | high priority | Severe impact, blocks users, security issue | | quick fix | Obviously simple fix |

Adding labels

gh issue edit $ARGUMENTS --repo denoland/deno --add-label "bug"

Remove the needs triage or triage required 👀 label if present:

gh issue edit $ARGUMENTS --repo denoland/deno --remove-label "needs triage" --remove-label "triage required 👀"

Step 6: Comment on the issue

Post a triage comment with your findings. Structure:

For confirmed bugs:

Confirmed on [version]. [Brief description of what you observed.]

[If tested on canary: "Also reproduces on canary." or "Does not reproduce on canary — may already be fixed."]

For needs info:

Thanks for reporting. Could you provide [missing info]? This will help us investigate.

For duplicates:

This looks like a duplicate of #XXXX. Closing in favor of that issue.

For questions:

This is a usage question rather than a bug. [Brief answer or pointer to docs.] Closing this — feel free to ask on https://discord.gg/deno if you have more questions.

Posting the comment

gh issue comment $ARGUMENTS --repo denoland/deno --body "comment text"

Close the issue if it's a duplicate, question, or invalid:

gh issue close $ARGUMENTS --repo denoland/deno --reason "not planned"

Rules

• Always confirm with the user before posting comments or modifying labels on GitHub.
• Do not close bug reports — only close duplicates, questions, and invalid issues.
• Keep labels minimal. One type label + one area label is usually enough.
• Be kind to reporters. Thank them, especially first-time reporters.
• If you cannot reproduce a bug, say so honestly — do not guess at causes.
• If the reproduction requires permissions or resources you don't have access to, note that and skip reproduction.
• Never dismiss an issue without investigation.