Revert "refactor: use Object.create(null) for null-prototype objects"

This reverts commit cecb825.

Author: jdalton

src/purl-component.ts

@@ -40,7 +40,8 @@ export type ComponentValidator = (_value: unknown, _throws: boolean) => boolean
 export type QualifiersValue = string | number | boolean | null | undefined
 export type QualifiersObject = Record<string, QualifiersValue>
 
-const componentSortOrderLookup = Object.assign(Object.create(null), {
+const componentSortOrderLookup = {
+  __proto__: null,
   type: 0,
   namespace: 1,
   name: 2,
@@ -49,7 +50,7 @@ const componentSortOrderLookup = Object.assign(Object.create(null), {
   qualifierKey: 5,
   qualifierValue: 6,
   subpath: 7,
-})
+}
 
 /**
  * Compare two component names for sorting.

src/purl-qualifier-names.ts

@@ -5,12 +5,13 @@
 
 // Known qualifiers:
 // https://github.com/package-url/purl-spec/blob/master/PURL-SPECIFICATION.rst#known-qualifiers-keyvalue-pairs
-const PurlQualifierNames = Object.assign(Object.create(null), {
+const PurlQualifierNames = {
+  __proto__: null,
   RepositoryUrl: 'repository_url',
   DownloadUrl: 'download_url',
   VcsUrl: 'vcs_url',
   FileName: 'file_name',
   Checksum: 'checksum',
-})
+}
 
 export { PurlQualifierNames }