docs: add example

example/.gitignore

@@ -0,0 +1 @@
+dist

example/index.js

@@ -0,0 +1,25 @@
+'use strict'
+const createFetcher = require('@pnpm/tarball-fetcher').default
+
+process.chdir(__dirname)
+
+const registry = 'https://registry.npmjs.org/'
+const fetch = createFetcher({
+  registry,
+  rawNpmConfig: {
+    registry,
+  },
+})
+
+const resolution = {
+  tarball: 'https://registry.npmjs.org/is-positive/-/is-positive-1.0.0.tgz',
+}
+fetch.tarball(resolution, 'dist/unpacked', {
+  cachedTarballLocation: 'dist/cache.tgz',
+  prefix: process.cwd(),
+})
+.then(index => console.log(Object.keys(index)))
+.catch(err => {
+  console.error(err)
+  process.exit(1)
+})

package.json

@@ -10,7 +10,7 @@
   "scripts": {
     "prepublishOnly": "npm run tsc",
     "tsc": "rimraf lib && tsc",
-    "test": "preview && ts-node test"
+    "test": "preview && ts-node test && node example"
   },
   "repository": {
     "type": "git",