[eslint-monster] [lint-monster] setup/js: numeric coercion, setOutput stringification, and async entrypoint cleanup

[github-actions]

Scope

Remediate remaining correctness/style warnings under actions/setup/js that cluster around numeric parsing/coercion, core.setOutput(...) value types, and bare async entrypoints.

Affected files

• actions/setup/js/assign_copilot_to_created_issues.cjs
• actions/setup/js/assign_milestone.cjs
• actions/setup/js/assign_to_agent.cjs
• actions/setup/js/autofix_code_scanning_alert.cjs
• actions/setup/js/check_skip_if_check_failing.cjs
• actions/setup/js/check_skip_if_helpers.cjs
• actions/setup/js/check_stop_time.cjs
• actions/setup/js/close_entity_helpers.cjs
• actions/setup/js/close_issue.cjs
• actions/setup/js/close_pull_request.cjs
• actions/setup/js/create_code_scanning_alert.cjs
• actions/setup/js/create_discussion.cjs
• actions/setup/js/create_issue.cjs
• actions/setup/js/create_pr_review_comment.cjs
• actions/setup/js/create_project_status_update.cjs
• actions/setup/js/ephemerals.cjs
• actions/setup/js/error_recovery.cjs
• actions/setup/js/generate_usage_activity_summary.cjs
• actions/setup/js/github_rate_limit_logger.cjs
• actions/setup/js/merge_remote_agent_github_folder.cjs
• actions/setup/js/parse_codex_log.cjs
• actions/setup/js/parse_mcp_gateway_log.cjs
• actions/setup/js/parse_mcp_scripts_logs.cjs
• actions/setup/js/parse_token_usage.cjs
• actions/setup/js/safe_output_handler_manager.cjs
• actions/setup/js/safe_output_helpers.cjs
• actions/setup/js/safe_output_type_validator.cjs
• actions/setup/js/safe_output_validator.cjs

Representative diagnostics

• assign_to_agent.cjs:57 — prefer Number.isNaN(...) over global isNaN(...).
• parse_codex_log.cjs:32 — parseInt() must be called with an explicit radix.
• create_code_scanning_alert.cjs:263 — setOutput value should be explicitly stringified.
• safe_output_handler_manager.cjs:1382 — numeric literal passed to setOutput should be converted explicitly.
• merge_remote_agent_github_folder.cjs:438 — bare main() call needs .catch(...).

Expected outcome

Setup runtime scripts should avoid coercive numeric APIs, provide explicit radix/string conversions, and ensure async entrypoints surface rejections predictably.

Checklist

• Replace global isNaN(...) with Number.isNaN(...) patterns that preserve intended semantics
• Add explicit radix arguments to every parseInt(...)
• Make core.setOutput(...) values explicit strings where required
• Add .catch(...) wrappers to bare async entrypoints
• Keep changes scoped to actions/setup/js
• Run npm run lint:setup-js

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• expires on Jul 12, 2026, 2:18 PM UTC-08:00