build: cache tarballs

yarnpkg · Aug 25, 2021 · bc5da06 · bc5da06
1 parent de49150
commit bc5da06
Showing 1 changed file with 7 additions and 5 deletions.
diff --git a/packages/plugin-compat/extra/typescript/gen-typescript-patch.js b/packages/plugin-compat/extra/typescript/gen-typescript-patch.js
@@ -288,14 +288,16 @@ async function run({from, to, onto, range}) {
 }
 
 async function validate(version, patchFile) {
+  const tarball = path.join(TMP_DIR, `tarballs/typescript-${version}.tgz`);
+  if (!fs.existsSync(tarball)) {
+    const data = await fetch(`https://registry.yarnpkg.com/typescript/-/typescript-${version}.tgz`);
+    await fs.promises.mkdir(path.dirname(tarball), {recursive: true});
+    await fs.promises.writeFile(tarball, data);
+  }
+
   const code = Math.floor(Math.random() * 0x100000000).toString(16).padStart(8, `0`);
   const tmpDir = path.join(TMP_DIR, `${code}`);
-
-  const data = await fetch(`https://registry.yarnpkg.com/typescript/-/typescript-${version}.tgz`);
-  const tarball = path.join(tmpDir, `typescript.tgz`);
-
   await fs.promises.mkdir(tmpDir, {recursive: true});
-  await fs.promises.writeFile(tarball, data);
 
   let patch = await fs.promises.readFile(patchFile, `utf8`);
   patch = patch.replace(/^semver .*\n/gm, ``);