V2 Setup

src/constants.ts

@@ -0,0 +1,4 @@
+export enum Inputs {
+  Name = 'name',
+  Path = 'path'
+}

src/download-artifact.ts

@@ -0,0 +1,25 @@
+import * as core from '@actions/core'
+import * as artifact from '@actions/artifact'
+import {Inputs} from './constants'
+
+async function run(): Promise<void> {
+  try {
+    const name = core.getInput(Inputs.Name, {required: false})
+    const path = core.getInput(Inputs.Path, {required: false})
+    const artifactClient = artifact.create()
+
+    if (!name) {
+      // download all artifacts
+      await artifactClient.downloadAllArtifacts(path)
+    } else {
+      // download a single artifact
+      await artifactClient.downloadArtifact(name, path, {
+        createArtifactFolder: false
+      })
+    }
+  } catch (err) {
+    core.setFailed(err.message)
+  }
+}
+
+run()