Add no-cache option (#58)

Many folks will copy/paste the sample code from the README directly. In CI, most people will want to enforce a frozen lockfile.

.github/workflows/release.yml

@@ -0,0 +1,25 @@
+name: Release new action version
+
+on:
+  release:
+    types: [released]
+  workflow_dispatch:
+    inputs:
+      TAG_NAME:
+        description: 'Tag name that the major tag will point to'
+        required: true
+
+env:
+  TAG_NAME: ${{ github.event.inputs.TAG_NAME || github.event.release.tag_name }}
+
+jobs:
+  update_tag:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: actions/publish-action@v0.3.0
+        with:
+          source-tag: ${{ env.TAG_NAME }}

README.md

@@ -25,16 +25,21 @@ If you need to authenticate with a private registry, you can set the `BUN_AUTH_T
 - name: Install Dependencies
   env:
     BUN_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
-  run: bun install
+  run: bun install --frozen-lockfile
 ```
 
+### Node.js not needed
+
+In most cases, you shouldn't need to use the [setup-node](https://github.com/actions/setup-node) GitHub Action.
+
 ## Inputs
 
 | Name           | Description                                        | Default     | Examples                        |
 | -------------- | -------------------------------------------------- | ----------- | ------------------------------- |
 | `bun-version`  | The version of Bun to download and install.        | `latest`    | `canary`, `1.0.0`, `1.0.x`      |
 | `registry-url` | Registry URL where some private package is stored. | `undefined` | `"https://npm.pkg.github.com/"` |
-| `scope`        | Scope for private pacakages.                       | `undefined` | `"@foo"`, `"@orgname"`          |
+| `scope`        | Scope for private packages.                        | `undefined` | `"@foo"`, `"@orgname"`          |
+| `no-cache`     | Disable caching of the downloaded executable.      | `false`     | `true`, `false`                 |
 
 ## Outputs
 

action.yml

@@ -14,6 +14,11 @@ inputs:
   scope:
     required: false
     description: "The scope for authenticating with the package registry."
+  no-cache:
+    required: false
+    type: boolean
+    default: false
+    description: "Disable caching of bun executable."
 outputs:
   bun-version:
     description: The version of Bun that was installed.
@@ -22,5 +27,7 @@ outputs:
   cache-hit:
     description: If the version of Bun was cached.
 runs:
-  using: node20
-  main: dist/index.js
+  using: "node20"
+  main: "dist/setup/index.js"
+  post: "dist/cache-save/index.js"
+  post-if: success()

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "setup-bun",
-  "version": "1.1.1",
+  "version": "1.2.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "setup-bun",
-      "version": "1.1.1",
+      "version": "1.2.0",
       "license": "MIT",
       "dependencies": {
         "@actions/cache": "^3.1.4",

package.json

@@ -1,7 +1,7 @@
 {
   "private": true,
   "name": "setup-bun",
-  "version": "1.1.1",
+  "version": "1.2.0",
   "description": "Setup Bun on GitHub Actions.",
   "keywords": [
     "bun",
@@ -18,8 +18,8 @@
   "author": "xHyroM",
   "scripts": {
     "format": "prettier --write src *.yml *.json *.md",
-    "build": "esbuild --target=node20 --outdir=dist --bundle --minify --platform=node --format=cjs src/index.ts",
-    "start": "npm run build && node dist/index.js"
+    "build": "esbuild --target=node20 --outfile=dist/setup/index.js --bundle --minify --platform=node --format=cjs src/index.ts && esbuild --target=node20 --outfile=dist/cache-save/index.js --bundle --minify --platform=node --format=cjs src/cache-save.ts",
+    "start": "npm run build && node dist/setup/index.js"
   },
   "dependencies": {
     "@actions/cache": "^3.1.4",

src/action.ts

@@ -8,10 +8,11 @@ import {
   copyFileSync,
 } from "node:fs";
 import { addPath, info, warning } from "@actions/core";
-import { isFeatureAvailable, restoreCache, saveCache } from "@actions/cache";
+import { isFeatureAvailable, restoreCache } from "@actions/cache";
 import { downloadTool, extractZip } from "@actions/tool-cache";
 import { getExecOutput } from "@actions/exec";
 import { writeBunfig } from "./bunfig";
+import { saveState } from "@actions/core";
 
 export type Input = {
   customUrl?: string;
@@ -22,6 +23,7 @@ export type Input = {
   profile?: boolean;
   scope?: string;
   registryUrl?: string;
+  noCache?: boolean;
 };
 
 export type Output = {
@@ -30,6 +32,13 @@ export type Output = {
   cacheHit: boolean;
 };
 
+export type CacheState = {
+  cacheEnabled: boolean;
+  cacheHit: boolean;
+  bunPath: string;
+  url: string;
+};
+
 export default async (options: Input): Promise<Output> => {
   const bunfigPath = join(process.cwd(), "bunfig.toml");
   writeBunfig(bunfigPath, options);
@@ -96,15 +105,17 @@ export default async (options: Input): Promise<Output> => {
     );
   }
 
-  if (cacheEnabled && !cacheHit) {
-    try {
-      await saveCache([bunPath], url);
-    } catch (error) {
-      warning("Failed to save Bun to cache.");
-    }
-  }
-
   const [version] = revision.split("+");
+
+  const cacheState: CacheState = {
+    cacheEnabled,
+    cacheHit,
+    bunPath,
+    url,
+  };
+
+  saveState("cache", JSON.stringify(cacheState));
+
   return {
     version,
     revision,
@@ -113,7 +124,10 @@ export default async (options: Input): Promise<Output> => {
 };
 
 function isCacheEnabled(options: Input): boolean {
-  const { customUrl, version } = options;
+  const { customUrl, version, noCache } = options;
+  if (noCache) {
+    return false;
+  }
   if (customUrl) {
     return false;
   }

src/cache-save.ts

@@ -0,0 +1,15 @@
+import { saveCache } from "@actions/cache";
+import { getState, warning } from "@actions/core";
+import { CacheState } from "./action";
+
+(async () => {
+  const state: CacheState = JSON.parse(getState("cache"));
+  if (state.cacheEnabled && !state.cacheHit) {
+    try {
+      await saveCache([state.bunPath], state.url);
+      process.exit(0);
+    } catch (error) {
+      warning("Failed to save Bun to cache.");
+    }
+  }
+})();

src/index.ts

@@ -1,7 +1,13 @@
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { existsSync, readFileSync } from "node:fs";
-import { getInput, setOutput, setFailed, warning } from "@actions/core";
+import {
+  getInput,
+  setOutput,
+  setFailed,
+  warning,
+  getBooleanInput,
+} from "@actions/core";
 import runAction from "./action.js";
 
 if (!process.env.RUNNER_TEMP) {
@@ -35,6 +41,7 @@ runAction({
   customUrl: getInput("bun-download-url") || undefined,
   registryUrl: getInput("registry-url") || undefined,
   scope: getInput("scope") || undefined,
+  noCache: getBooleanInput("no-cache") || false,
 })
   .then(({ version, revision, cacheHit }) => {
     setOutput("bun-version", version);