25 lines
1.4 KiB
Markdown
25 lines
1.4 KiB
Markdown
# Entry-Point Runtime — Node.js
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## Signals to gather
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- `argv0` equals `node`, `nodejs`, or path ends with `/bin/node`.
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- Scripts launched via package runners (`npm`, `yarn`, `pnpm node …`, `npx`).
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- Presence of `package.json` with `"main"` or `"scripts":{"start":…}` entries.
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- `NODE_ENV`, `NODE_OPTIONS`, or `NPM_PACKAGE_NAME` environment hints.
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- Bundler/PM2 scenarios: `pm2-runtime`, `pm2-docker`, `forever`, `nodemon`.
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## Implementation notes
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- Resolve script arguments (e.g., `node server.js`) relative to the working dir.
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- If invoked through `npm start`/`yarn run`, parse `package.json` to expand the actual script.
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- Support TypeScript loaders (`ts-node`, `node --loader`, `.mjs`) by inspecting extensions and flags.
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- Normalise shebang-based Node scripts (ShellFlow ensures `#!/usr/bin/env node` collapses to Node).
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## Evidence & scoring
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- Boost confidence when a concrete JS/TS entry file exists.
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- Add evidence for `package.json` metadata, PM2 ecosystem files, or `NODE_ENV` values.
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- Penalise when the entry file is missing or only package runners are present without scripts.
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## Edge cases
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- Multi-service supervisors (e.g., `pm2` managing multiple apps): treat as `Supervisor` and list programmes as children.
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- Serverless shims (e.g., Google Functions) wrap Node; prefer the user-provided handler script if detectable.
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- Distroless snapshots may omit package managers; rely on Node binary + script presence.
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