diff --git a/packages/npm-resolver/src/pickPackage.ts b/packages/npm-resolver/src/pickPackage.ts
index f79a29f9d9c..5e57d5cb14a 100644
--- a/packages/npm-resolver/src/pickPackage.ts
+++ b/packages/npm-resolver/src/pickPackage.ts
@@ -16,10 +16,8 @@ import pickPackageFromMeta from './pickPackageFromMeta'
 import { RegistryPackageSpec } from './parsePref'
 
 export interface PackageMeta {
-  'dist-tag': { [name: string]: string }
-  versions: {
-    [name: string]: PackageInRegistry
-  }
+  'dist-tags': Record<string, string>
+  versions: Record<string, PackageInRegistry>
   cachedAt?: number
 }
 
diff --git a/packages/npm-resolver/src/pickPackageFromMeta.ts b/packages/npm-resolver/src/pickPackageFromMeta.ts
index 269e44a1c8e..2a50fe90ee1 100644
--- a/packages/npm-resolver/src/pickPackageFromMeta.ts
+++ b/packages/npm-resolver/src/pickPackageFromMeta.ts
@@ -8,9 +8,9 @@ export default function (
   spec: RegistryPackageSpec,
   preferredVersionSelectors: VersionSelectors | undefined,
   meta: PackageMeta
-): PackageInRegistry {
+): PackageInRegistry | null {
   try {
-    let version!: string
+    let version!: string | null
     switch (spec.type) {
     case 'version':
       version = spec.fetchSpec
@@ -22,6 +22,7 @@ export default function (
       version = pickVersionByVersionRange(meta, spec.fetchSpec, preferredVersionSelectors)
       break
     }
+    if (!version) return null
     const manifest = meta.versions[version]
     if (manifest && meta['name']) {
       // Packages that are published to the GitHub registry are always published with a scope.
@@ -44,7 +45,7 @@ function pickVersionByVersionRange (
   meta: PackageMeta,
   versionRange: string,
   preferredVerSels?: VersionSelectors
-) {
+): string | null {
   let versions: string[] | undefined
   const latest = meta['dist-tags'].latest