Fix two crashes the first live run exposed

scripts/cache-save.sh

@@ -215,9 +215,34 @@ NODE
     node --input-type=module - "$PWD/$arm_dir/package.json" <<'NODE'
 import { createRequire } from "node:module";
 
+// `@actions/cache` publishes an `exports` map with no "." entry, so requiring it
+// by package name fails outright. Resolving its manifest and requiring the file
+// its `main` points at goes around the map, and keeps working whichever version
+// a given setup-java ref happens to pin.
+function loadCacheClient(require, manifest) {
+  const { readFileSync } = require("node:fs");
+  const { dirname, join } = require("node:path");
+  let manifestPath;
+  try {
+    manifestPath = require.resolve("@actions/cache/package.json");
+  } catch {
+    // Some versions do not expose "./package.json" through the map either, in
+    // which case the install layout is the only thing left to go on.
+    manifestPath = join(
+      dirname(manifest),
+      "node_modules",
+      "@actions",
+      "cache",
+      "package.json",
+    );
+  }
+  const manifest = JSON.parse(readFileSync(manifestPath, "utf8"));
+  return require(join(dirname(manifestPath), manifest.main ?? "lib/cache.js"));
+}
+
 const [manifest] = process.argv.slice(2);
 const require = createRequire(manifest);
-require.resolve("@actions/cache");
+loadCacheClient(require, manifest);
 NODE
     ;;
   save)
@@ -236,10 +261,35 @@ NODE
 import { createRequire } from "node:module";
 import { pathToFileURL } from "node:url";
 
+// `@actions/cache` publishes an `exports` map with no "." entry, so requiring it
+// by package name fails outright. Resolving its manifest and requiring the file
+// its `main` points at goes around the map, and keeps working whichever version
+// a given setup-java ref happens to pin.
+function loadCacheClient(require, manifest) {
+  const { readFileSync } = require("node:fs");
+  const { dirname, join } = require("node:path");
+  let manifestPath;
+  try {
+    manifestPath = require.resolve("@actions/cache/package.json");
+  } catch {
+    // Some versions do not expose "./package.json" through the map either, in
+    // which case the install layout is the only thing left to go on.
+    manifestPath = join(
+      dirname(manifest),
+      "node_modules",
+      "@actions",
+      "cache",
+      "package.json",
+    );
+  }
+  const manifest = JSON.parse(readFileSync(manifestPath, "utf8"));
+  return require(join(dirname(manifestPath), manifest.main ?? "lib/cache.js"));
+}
+
 const [manifest, fixtureDir, key, resultsFile, sample, arm, slot] =
   process.argv.slice(2);
 const require = createRequire(manifest);
-const cache = require("@actions/cache");
+const cache = loadCacheClient(require, manifest);
 
 const started = Date.now();
 const cacheId = await cache.saveCache([fixtureDir], key);

scripts/check-cache-keys.mjs

@@ -218,11 +218,11 @@ export function markdown(metadata, result) {
 }
 
 export async function main(env = process.env) {
-  const runId = requireEnv(env, "GITHUB_RUN_ID");
+  requireEnv(env, ["GITHUB_RUN_ID", "SETUP_JAVA_REPOSITORY", "SETUP_JAVA_REF"]);
   const metadata = {
-    runId,
-    setupJavaRepository: requireEnv(env, "SETUP_JAVA_REPOSITORY"),
-    setupJavaRef: requireEnv(env, "SETUP_JAVA_REF"),
+    runId: env.GITHUB_RUN_ID,
+    setupJavaRepository: env.SETUP_JAVA_REPOSITORY,
+    setupJavaRef: env.SETUP_JAVA_REF,
     generatedAt: new Date().toISOString(),
   };
   const rows = parseKeys(await readKeyFiles());

scripts/report-cache-value.mjs

@@ -133,11 +133,18 @@ export function markdown(metadata, analysis, caches) {
 }
 
 export async function main(env = process.env) {
-  const token = requireEnv(env, "GH_TOKEN");
-  const runId = requireEnv(env, "GITHUB_RUN_ID");
-  const setupJavaRepository = requireEnv(env, "SETUP_JAVA_REPOSITORY");
-  const setupJavaRef = requireEnv(env, "SETUP_JAVA_REF");
-  const [owner, repo] = requireEnv(env, "GITHUB_REPOSITORY").split("/");
+  requireEnv(env, [
+    "GH_TOKEN",
+    "GITHUB_RUN_ID",
+    "SETUP_JAVA_REPOSITORY",
+    "SETUP_JAVA_REF",
+    "GITHUB_REPOSITORY",
+  ]);
+  const token = env.GH_TOKEN;
+  const runId = env.GITHUB_RUN_ID;
+  const setupJavaRepository = env.SETUP_JAVA_REPOSITORY;
+  const setupJavaRef = env.SETUP_JAVA_REF;
+  const [owner, repo] = env.GITHUB_REPOSITORY.split("/");
   if (!owner || !repo) {
     throw new Error(
       `GITHUB_REPOSITORY must be owner/repo, got "${env.GITHUB_REPOSITORY}"`,