Don't attempt to un-zip non-zipped downloads

src/constants.ts

@@ -6,7 +6,8 @@ export enum Inputs {
   RunID = 'run-id',
   Pattern = 'pattern',
   MergeMultiple = 'merge-multiple',
-  ArtifactIds = 'artifact-ids'
+  ArtifactIds = 'artifact-ids',
+  SkipDecompress = 'skip-decompress'
 }
 
 export enum Outputs {

src/download-artifact.ts

@@ -4,7 +4,7 @@ import * as core from '@actions/core'
 import artifactClient from '@actions/artifact'
 import type {Artifact, FindOptions} from '@actions/artifact'
 import {Minimatch} from 'minimatch'
-import {Inputs, Outputs} from './constants'
+import {Inputs, Outputs} from './constants.js'
 
 const PARALLEL_DOWNLOADS = 5
 
@@ -26,7 +26,10 @@ export async function run(): Promise<void> {
     mergeMultiple: core.getBooleanInput(Inputs.MergeMultiple, {
       required: false
     }),
-    artifactIds: core.getInput(Inputs.ArtifactIds, {required: false})
+    artifactIds: core.getInput(Inputs.ArtifactIds, {required: false}),
+    skipDecompress: core.getBooleanInput(Inputs.SkipDecompress, {
+      required: false
+    })
   }
 
   if (!inputs.path) {
@@ -179,7 +182,8 @@ export async function run(): Promise<void> {
         artifacts.length === 1
           ? resolvedPath
           : path.join(resolvedPath, artifact.name),
-      expectedHash: artifact.digest
+      expectedHash: artifact.digest,
+      skipDecompress: inputs.skipDecompress
     })
   }))