Release automation, take 3. (#102)

* Fix changeset version command, attempt 2.

Since this isn't parsed by a shell, the quotes don't work. 🤦

* Add missing version-script.ts file.

This was referenced from the prerelease job but didn't make it into the original PR.

Author: kentonv

.github/changeset-version.sh

@@ -0,0 +1,12 @@
+#! /bin/sh
+# This script is called by the changeset action in release.yml.
+
+set -e
+
+npx changeset version
+
+# The standard step is only to run `changeset version` but this does not update the
+# package-lock.json file. So we also run `npm install`, which does this update.
+# This is a workaround until this is handled automatically by `changeset version`.
+# See https://github.com/changesets/changesets/issues/421.
+npm install

.github/version-script.ts

@@ -0,0 +1,23 @@
+import * as fs from "node:fs";
+import { execSync } from "node:child_process";
+async function main() {
+  try {
+    console.log("Getting current git hash...");
+    const stdout = execSync("git rev-parse --short HEAD").toString();
+    console.log("Git hash:", stdout.trim());
+
+    const path = "./package.json";
+    const packageJson = JSON.parse(fs.readFileSync(path, "utf-8"));
+    packageJson.version = `0.0.0-${stdout.trim()}`;
+    fs.writeFileSync(path, `${JSON.stringify(packageJson, null, 2)}\n`);
+  } catch (error) {
+    console.error(error);
+    process.exit(1);
+  }
+}
+
+main().catch((err) => {
+  // Build failures should fail
+  console.error(err);
+  process.exit(1);
+});

.github/workflows/release.yml

@@ -34,11 +34,10 @@ jobs:
       - id: changesets
         uses: changesets/action@v1
         with:
-          # The standard step is only to run `changeset version` but this does not update the
-          # package-lock.json file. So we also run `npm install`, which does this update.
-          # This is a workaround until this is handled automatically by `changeset version`.
-          # See https://github.com/changesets/changesets/issues/421.
-          version: bash -c 'npx changeset version && npm install'
+          # Note that these commands are NOT interpreted by a shell, they are apparently only
+          # split on whitespace and then passed directly to execvp(). Hence the need to indirect
+          # through a shell script, ugh. :(
+          version: ./github/changeset-version.sh
           publish: npx changeset publish
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}