use fs instead of touch for cross-platform (windows) compatibility; fix prettttier thing i missed

Author: tophtucker

src/deploy.ts

@@ -279,7 +279,7 @@ class Deployer {
     if (!isGit) throw new CliError("Not at root of a git repository.");
 
     const {ownerName, repoName} = await getGitHubRemote();
-    const a = (await promisify(exec)("git rev-parse --abbrev-ref HEAD"));
+    const a = await promisify(exec)("git rev-parse --abbrev-ref HEAD");
     console.log("validateGitHubLink", {stdout: a.stdout, stderr: a.stderr});
     const branch = a.stdout.trim();
     let localRepo = await this.apiClient.getGitHubRepository({ownerName, repoName});

test/deploy-test.ts

@@ -1,7 +1,7 @@
 import assert, {fail} from "node:assert";
 import {exec} from "node:child_process";
 import type {Stats} from "node:fs";
-import {stat} from "node:fs/promises";
+import {open, stat} from "node:fs/promises";
 import {Readable, Writable} from "node:stream";
 import {promisify} from "node:util";
 import type {BuildManifest} from "../src/build.js";
@@ -257,8 +257,11 @@ describe("deploy", () => {
         true // Do you want to enable continuous deployment?
       );
 
+      await (
+        await open("readme.md", "a")
+      ).close;
       const {stdout, stderr} = await promisify(exec)(
-        "touch readme.md && git add . && git commit -m 'initial' && git remote add origin [email protected]:observablehq/test.git"
+        "git add . && git commit -m 'initial' && git remote add origin [email protected]:observablehq/test.git"
       );
       console.log("starts cloud build test", {stdout, stderr});