Fixes the lockfile hydration of the npm: protocol

src/cli/index.js

@@ -36,7 +36,7 @@ process.stdout.prependListener('error', err => {
   throw err;
 });
 
-function findPackageManager(base: string): ?string {
+function findPackageManager(base: string): string | null {
   let prev = null;
   let dir = base;
 
@@ -45,7 +45,7 @@ function findPackageManager(base: string): ?string {
 
     let data;
     try {
-      data = JSON.parse(fs.readFileSync(p));
+      data = JSON.parse(fs.readFileSync(p, `utf8`));
     } catch (err) {}
 
     if (data && typeof data.packageManager === `string`) {
@@ -303,12 +303,14 @@ export async function main({
         process.stderr.write(
           `Presence of the ${chalk.gray(
             `"packageManager"`,
+            // eslint-disable-next-line max-len
           )} field indicates that the project is meant to be used with Corepack, a tool included by default with all official Node.js distributions starting from 16.9 and 14.19.\n`,
         );
 
         process.stderr.write(
           `Corepack must currently be enabled by running ${chalk.magenta(
             `corepack enable`,
+            // $FlowIgnore
           )} in your terminal. For more information, check out ${chalk.blueBright(`https://yarnpkg.com/corepack`)}.\n`,
         );
 

src/lockfile/index.js

@@ -229,20 +229,19 @@ export default class Lockfile {
       invariant(remote, 'Package is missing a remote');
 
       const remoteKey = keyForRemote(remote);
-      const seenPattern = remoteKey && seen.get(remoteKey);
+      const pkgName = getName(pattern);
+
+      const seenKey = remoteKey ? `${remoteKey}#${pkgName}` : null;
+      const seenPattern = seenKey ? seen.get(seenKey) : null;
+
       if (seenPattern) {
         // no point in duplicating it
         lockfile[pattern] = seenPattern;
-
-        // if we're relying on our name being inferred and two of the patterns have
-        // different inferred names then we need to set it
-        if (!seenPattern.name && getName(pattern) !== pkg.name) {
-          seenPattern.name = pkg.name;
-        }
         continue;
       }
+
       const obj = implodeEntry(pattern, {
-        name: pkg.name,
+        name: pkgName,
         version: pkg.version,
         uid: pkg._uid,
         resolved: remote.resolved,
@@ -257,8 +256,8 @@ export default class Lockfile {
 
       lockfile[pattern] = obj;
 
-      if (remoteKey) {
-        seen.set(remoteKey, obj);
+      if (seenKey) {
+        seen.set(seenKey, obj);
       }
     }