first commit

node_modules/release-it/test/util/fetch.js

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+import { Readable } from 'node:stream';
+import { create as createTar } from 'tar';
+import { appendFile, mkTmpDir } from './helpers.js';
+
+export function createTarBlob(dir) {
+  const stream = new Readable({
+    read() {}
+  });
+
+  createTar(
+    {
+      gzip: true,
+      portable: true,
+      sync: false,
+      cwd: dir
+    },
+    ['.']
+  )
+    .on('data', chunk => stream.push(chunk))
+    .on('end', () => stream.push(null));
+
+  return stream;
+}
+
+export function createTarBlobByRawContents(contents) {
+  const dir = mkTmpDir();
+  for (const [key, value] of Object.entries(contents)) {
+    appendFile(value, key, dir);
+  }
+
+  return createTarBlob(dir);
+}