Fix #1775 - Use latest polyscript dev script (#1810)

pyscript.core/dev.cjs

@@ -0,0 +1,31 @@
+let queue = Promise.resolve();
+
+const { exec } = require("node:child_process");
+
+const build = (fileName) => {
+    if (fileName) console.log(fileName, "changed");
+    else console.log("building without optimizations");
+    queue = queue.then(
+        () =>
+            new Promise((resolve) => {
+                exec(
+                    "npm run build:stdlib && npm run build:plugins && npm run build:core",
+                    { cwd: __dirname, env: { ...process.env, NO_MIN: true } },
+                    (error) => {
+                        if (error) console.error(error);
+                        else console.log(fileName || "", "build completed");
+                        resolve();
+                    },
+                );
+            }),
+    );
+};
+
+const options = {
+    ignored: /\/(?:toml|plugins|pyscript)\.[mc]?js$/,
+    persistent: true,
+};
+
+require("chokidar").watch("./src", options).on("change", build);
+
+build();