Refactor checkpoint

scripts/shared/startRebuildOnSrcChange.ts

@@ -0,0 +1,40 @@
+import * as child_process from "child_process";
+import { waitForDebounceFactory } from "powerhooks/tools/waitForDebounce";
+import chokidar from "chokidar";
+import * as runExclusive from "run-exclusive";
+import { Deferred } from "evt/tools/Deferred";
+import chalk from "chalk";
+
+export function startRebuildOnSrcChange() {
+    const { waitForDebounce } = waitForDebounceFactory({ delay: 400 });
+
+    const runYarnBuild = runExclusive.build(async () => {
+        console.log(chalk.green("Running `yarn build`"));
+
+        const dCompleted = new Deferred<void>();
+
+        const child = child_process.spawn("yarn", ["build"], { shell: true });
+
+        child.stdout.on("data", data => process.stdout.write(data));
+
+        child.stderr.on("data", data => process.stderr.write(data));
+
+        child.on("exit", () => dCompleted.resolve());
+
+        await dCompleted.pr;
+
+        console.log("\n\n");
+    });
+
+    console.log(chalk.green("Watching for changes in src/"));
+
+    chokidar
+        .watch(["src", "stories"], { ignoreInitial: true })
+        .on("all", async (event, path) => {
+            console.log(chalk.bold(`${event}: ${path}`));
+
+            await waitForDebounce();
+
+            runYarnBuild();
+        });
+}