Initial commit

src/packagemanager/npm/parsing/parsePackagesFromInstallArgs.js

@@ -0,0 +1,109 @@
+export function parsePackagesFromInstallArgs(args) {
+  const changes = [];
+  let defaultTag = "latest";
+
+  // Skip first argument (install command)
+  for (let i = 1; i < args.length; i++) {
+    const arg = args[i];
+    const npmOption = getNpmOption(arg);
+
+    if (npmOption) {
+      // If the option has a parameter, skip the next argument as well
+      i += npmOption.numberOfParameters;
+
+      // it a tag is specified, set the default tag
+      if (npmOption.name === "--tag") {
+        defaultTag = args[i];
+      }
+
+      continue;
+    }
+
+    const packageDetails = parsePackagename(arg);
+    if (packageDetails) {
+      changes.push(packageDetails);
+      continue;
+    }
+  }
+
+  for (const change of changes) {
+    if (!change.version) {
+      change.version = defaultTag;
+    }
+  }
+
+  return changes;
+}
+
+function getNpmOption(arg) {
+  if (isNpmOptionWithParameter(arg)) {
+    return {
+      name: arg,
+      numberOfParameters: 1,
+    };
+  }
+
+  // Arguments starting with "-" or "--" are considered npm options
+  if (arg.startsWith("-")) {
+    return {
+      name: arg,
+      numberOfParameters: 0,
+    };
+  }
+
+  return undefined;
+}
+
+function isNpmOptionWithParameter(arg) {
+  const optionsWithParameters = [
+    "--access",
+    "--auth-type",
+    "--cache",
+    "--fetch-retries",
+    "--fetch-retry-mintimeout",
+    "--fetch-retry-maxtimeout",
+    "--fetch-retry-factor",
+    "--fetch-timeout",
+    "--https-proxy",
+    "--include",
+    "--location",
+    "--lockfile-version",
+    "--loglevel",
+    "--omit",
+    "--proxy",
+    "--registry",
+    "--replace-registry-host",
+    "--tag",
+    "--user-config",
+    "--workspace",
+  ];
+
+  return optionsWithParameters.includes(arg);
+}
+
+function parsePackagename(arg) {
+  arg = removeAlias(arg);
+  const lastAtIndex = arg.lastIndexOf("@");
+
+  let name, version;
+  if (lastAtIndex !== -1) {
+    name = arg.slice(0, lastAtIndex);
+    version = arg.slice(lastAtIndex + 1);
+  } else {
+    name = arg;
+    version = null;
+  }
+
+  return {
+    name,
+    version,
+  };
+}
+
+function removeAlias(arg) {
+  const aliasIndex = arg.indexOf("@npm:");
+  if (aliasIndex !== -1) {
+    return arg.slice(aliasIndex + 5);
+  }
+  return arg;
+}