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80 lines
3.1 KiB
Markdown
80 lines
3.1 KiB
Markdown
# npm
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**Mode**: 🌐 Public · **Domain**: `registry.npmjs.org` (+ `api.npmjs.org` for download stats)
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Search and inspect packages on the public npm registry without auth or browser. Three commands cover discovery, single-package metadata, and download stats.
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## Commands
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| Command | Description |
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|---------|-------------|
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| `opencli npm search <query>` | Search the public npm registry by keyword |
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| `opencli npm package <name>` | Single-package registry metadata (latest version, license, repo, maintainers) |
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| `opencli npm downloads <name>` | Download stats for one package over a fixed period or `YYYY-MM-DD:YYYY-MM-DD` range |
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## Usage Examples
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```bash
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# Search the registry
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opencli npm search react --limit 10
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opencli npm search "graphql client" --limit 20
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# Inspect a single package (use `name` from search rows)
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opencli npm package react
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opencli npm package @vercel/og
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# Download stats for a fixed period
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opencli npm downloads react --period last-week
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opencli npm downloads react --period last-month
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opencli npm downloads react --period last-year
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# Custom date range (max 365 days, npm API limit)
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opencli npm downloads react --period 2025-01-01:2025-01-31
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# JSON output
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opencli npm package react -f json
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```
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## Output Columns
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| Command | Columns |
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|---------|---------|
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| `search` | `rank, name, version, description, weeklyDownloads, dependents, license, publisher, updated, url` |
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| `package` | `name, latestVersion, description, license, homepage, repository, bugs, maintainers, keywords, created, modified, url` |
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| `downloads` | `rank, package, day, downloads` (range) or `rank, package, day, downloads` for fixed periods (single row, `day` = `last-week:start..end`) |
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The `name` column from `search` round-trips into `package` and `downloads`.
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## Options
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### `search`
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| Option | Description |
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|--------|-------------|
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| `query` (positional) | Free-text query (matches name / description / keywords / readme) |
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| `--limit` | Max results (1–250, default: 20) |
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### `package`
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| Option | Description |
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|--------|-------------|
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| `name` (positional) | npm package name (e.g. `react`, `@vercel/og`). Validates 1–214 chars and the npm naming rule. |
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### `downloads`
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| Option | Description |
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|--------|-------------|
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| `name` (positional) | npm package name |
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| `--period` | One of `last-day`, `last-week`, `last-month`, `last-year`, **or** a `YYYY-MM-DD:YYYY-MM-DD` range (default: `last-week`) |
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## Caveats
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- The `--period` argument is validated upfront — anything that's neither one of the four named periods nor a valid `YYYY-MM-DD:YYYY-MM-DD` range raises `ArgumentError` (no silent fallback).
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- npm rate-limits the search and download APIs; `HTTP 429` surfaces as a typed `CommandExecutionError` with a retry hint.
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- Download stats are intentionally a separate command from `package`. If the stats endpoint fails, the registry-metadata response from `package` is unaffected.
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- The package-name regex matches `^(?:@scope\/)?name$` (lowercase letters / digits / `._-`), capped at 214 chars per npm's spec.
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## Prerequisites
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- No browser required — uses public registry endpoints.
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