Automatically publish PRs from non-forks

Collaborators can get a published npm package, as a treat.

.github/workflows/ci.yml

@@ -57,3 +57,14 @@ jobs:
           cache: "pnpm"
       - run: pnpm install
       - run: pnpm tsc
+
+  publish-branch:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: pnpm/action-setup@v3
+      - uses: actions/setup-node@v4
+        with:
+          cache: "pnpm"
+      - run: pnpm install
+      - run: pnpm publish-branch

scripts/publish-branch.ts

@@ -0,0 +1,14 @@
+import childProcess from "node:child_process"
+import fs from "node:fs"
+
+const shortCommit = childProcess.execSync("git rev-parse --short HEAD", { encoding: "utf8" }).trim()
+
+const version = `0.0.0-${shortCommit}`
+
+console.log(`Publishing ${version} to npm...`)
+
+const packageJson = JSON.parse(fs.readFileSync("package.json", "utf8"))
+packageJson.version = version
+fs.writeFileSync("package.json", JSON.stringify(packageJson, null, 2))
+
+childProcess.execSync("npm publish --access public --tag experimental", { stdio: "inherit" })