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website/node_modules/npm/lib/utils/pick-manifest-from-registry-metadata.js

@@ -0,0 +1,26 @@
+'use strict'
+module.exports = pickManifestFromRegistryMetadata
+
+var log = require('npmlog')
+var semver = require('semver')
+
+function pickManifestFromRegistryMetadata (spec, tag, versions, metadata) {
+  log.silly('pickManifestFromRegistryMetadata', 'spec', spec, 'tag', tag, 'versions', versions)
+
+  // if the tagged version satisfies, then use that.
+  var tagged = metadata['dist-tags'][tag]
+  if (tagged &&
+      metadata.versions[tagged] &&
+      semver.satisfies(tagged, spec, true)) {
+    return {resolvedTo: tag, manifest: metadata.versions[tagged]}
+  }
+  // find the max satisfying version.
+  var ms = semver.maxSatisfying(versions, spec, true)
+  if (ms) {
+    return {resolvedTo: ms, manifest: metadata.versions[ms]}
+  } else if (spec === '*' && versions.length && tagged && metadata.versions[tagged]) {
+    return {resolvedTo: tag, manifest: metadata.versions[tagged]}
+  } else {
+
+  }
+}