Add script to guard against publishing with the wrong dist-tag

.github/RELEASING.md

@@ -27,7 +27,7 @@
 7. After approval, run the following commands to publish to npmjs.com:
 
    ```bash
-   pnpm install && pnpm run all && pnpm --filter "./packages/*" publish
+   pnpm install && pnpm run all && node scripts/release.mjs
    ```
 
 8. Merge your PR.

scripts/release.mjs

@@ -0,0 +1,78 @@
+// Copyright 2021-2024 The Connect Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import { readdirSync, readFileSync } from "fs";
+import { join } from "path";
+import { existsSync } from "node:fs";
+import { execSync } from "node:child_process";
+
+/*
+ * Publish connect-query-es. See .github/RELEASING.md
+ */
+
+const tag = determinePublishTag(findWorkspaceVersion("packages"));
+const command = `pnpm --filter "./packages/*" publish --tag ${tag}`;
+execSync(command, {
+  stdio: "inherit",
+});
+
+/**
+ * @param {string} version
+ * @returns {string}
+ */
+function determinePublishTag(version) {
+  if (/^\d+\.\d+\.\d+$/.test(version)) {
+    return "latest";
+  } else if (/^\d+\.\d+\.\d+-alpha.*$/.test(version)) {
+    return "alpha";
+  } else if (/^\d+\.\d+\.\d+-beta.*$/.test(version)) {
+    return "beta";
+  } else if (/^\d+\.\d+\.\d+-rc.*$/.test(version)) {
+    return "rc";
+  } else {
+    throw new Error(`Unable to determine publish tag from version ${version}`);
+  }
+}
+
+/**
+ * @param {string} packagesDir
+ * @returns {string}
+ */
+function findWorkspaceVersion(packagesDir) {
+  let version = undefined;
+  for (const entry of readdirSync(packagesDir, { withFileTypes: true })) {
+    if (!entry.isDirectory()) {
+      continue;
+    }
+    const path = join(packagesDir, entry.name, "package.json");
+    if (existsSync(path)) {
+      const pkg = JSON.parse(readFileSync(path, "utf-8"));
+      if (pkg.private === true) {
+        continue;
+      }
+      if (!pkg.version) {
+        throw new Error(`${path} is missing "version"`);
+      }
+      if (version === undefined) {
+        version = pkg.version;
+      } else if (version !== pkg.version) {
+        throw new Error(`${path} has unexpected version ${pkg.version}`);
+      }
+    }
+  }
+  if (version === undefined) {
+    throw new Error(`unable to find workspace version`);
+  }
+  return version;
+}