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| 1 | +import type { JsrPackageMeta, JsrPackageInfo } from '#shared/types/jsr' |
| 2 | + |
| 3 | +const JSR_REGISTRY = 'https://jsr.io' |
| 4 | + |
| 5 | +/** |
| 6 | + * Check if a scoped npm package exists on JSR with the same name. |
| 7 | + * |
| 8 | + * This only works for scoped packages (@scope/name) since: |
| 9 | + * 1. JSR only has scoped packages |
| 10 | + * 2. We can only authoritatively match when names are identical |
| 11 | + * |
| 12 | + * Unscoped npm packages (e.g., "hono") may exist on JSR under a different |
| 13 | + * name (e.g., "@hono/hono"), but we don't attempt to guess these mappings. |
| 14 | + * |
| 15 | + * @param npmPackageName - The npm package name (e.g., "@hono/hono") |
| 16 | + * @returns JsrPackageInfo with existence status and metadata |
| 17 | + */ |
| 18 | +export const fetchJsrPackageInfo = defineCachedFunction( |
| 19 | + async (npmPackageName: string): Promise<JsrPackageInfo> => { |
| 20 | + // Only check scoped packages - we can't authoritatively map unscoped names |
| 21 | + if (!npmPackageName.startsWith('@')) { |
| 22 | + return { exists: false } |
| 23 | + } |
| 24 | + |
| 25 | + // Parse scope and name from @scope/name format |
| 26 | + const match = npmPackageName.match(/^@([^/]+)\/(.+)$/) |
| 27 | + if (!match) { |
| 28 | + return { exists: false } |
| 29 | + } |
| 30 | + |
| 31 | + const [, scope, name] = match |
| 32 | + |
| 33 | + try { |
| 34 | + // Fetch JSR package metadata |
| 35 | + const meta = await $fetch<JsrPackageMeta>(`${JSR_REGISTRY}/@${scope}/${name}/meta.json`, { |
| 36 | + // Short timeout since this is a nice-to-have feature |
| 37 | + timeout: 3000, |
| 38 | + }) |
| 39 | + |
| 40 | + // Find latest non-yanked version |
| 41 | + const versions = Object.entries(meta.versions) |
| 42 | + .filter(([, v]) => !v.yanked) |
| 43 | + .map(([version]) => version) |
| 44 | + |
| 45 | + versions.sort() |
| 46 | + const latestVersion = versions[versions.length - 1] |
| 47 | + |
| 48 | + return { |
| 49 | + exists: true, |
| 50 | + scope: meta.scope, |
| 51 | + name: meta.name, |
| 52 | + url: `${JSR_REGISTRY}/@${meta.scope}/${meta.name}`, |
| 53 | + latestVersion, |
| 54 | + } |
| 55 | + } catch { |
| 56 | + // Package doesn't exist on JSR or API error |
| 57 | + return { exists: false } |
| 58 | + } |
| 59 | + }, |
| 60 | + { |
| 61 | + // Cache for 1 hour - JSR info doesn't change often |
| 62 | + maxAge: 60 * 60, |
| 63 | + name: 'jsr-package-info', |
| 64 | + getKey: (name: string) => name, |
| 65 | + }, |
| 66 | +) |
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