chore: base

src/utils/install.ts

@@ -0,0 +1,34 @@
+import { Release } from './getGithubRelease.js';
+import { cacheDir, downloadTool, extractZip, find } from '@actions/tool-cache';
+import { addPath, info } from '@actions/core';
+import getAsset from './getAsset.js';
+import getHomeDir from './getHomeDir.js';
+import { join } from 'path';
+
+export default async(release: Release) => {
+    const cache = find('bun', release.tag_name);
+    if (cache) {
+        info(`Using cached Bun installation from ${cache}.`);
+        addPath(cache);
+        return;
+    }
+
+    const asset = getAsset(release.assets);
+
+    info(`Downloading Bun from ${asset.browser_download_url}.`);
+
+    const zipPath = await downloadTool(asset.browser_download_url);
+    const extracted = await extractZip(zipPath);
+
+    const newCache = await cacheDir(
+        extracted,
+        'bun',
+        release.tag_name
+    );
+
+    info(`Cached Bun to ${newCache}.`);
+    addPath(newCache);
+
+    const bunPath = join(getHomeDir(), ".bun", "bin");
+    addPath(bunPath);
+}