add hw2

node_modules/semver/functions/parse.js

@@ -0,0 +1,18 @@
+'use strict'
+
+const SemVer = require('../classes/semver')
+const parse = (version, options, throwErrors = false) => {
+  if (version instanceof SemVer) {
+    return version
+  }
+  try {
+    return new SemVer(version, options)
+  } catch (er) {
+    if (!throwErrors) {
+      return null
+    }
+    throw er
+  }
+}
+
+module.exports = parse