feat(cloudflare-pages): generate wrangler.toml (#2353)

package.json

@@ -80,6 +80,7 @@
     "chalk": "^5.3.0",
     "chokidar": "^3.6.0",
     "citty": "^0.1.6",
+    "confbox": "^0.1.6",
     "consola": "^3.2.3",
     "cookie-es": "^1.1.0",
     "croner": "^8.0.2",

src/presets/cloudflare-pages.ts

@@ -6,10 +6,12 @@ import {
   withTrailingSlash,
   withoutLeadingSlash,
 } from "ufo";
+import { parseTOML, stringifyTOML } from "confbox";
 import { globby } from "globby";
 import { defineNitroPreset } from "../preset";
 import type { Nitro } from "../types";
 import { CloudflarePagesRoutes } from "../types/presets/cloudflare";
+import defu from "defu";
 
 export const cloudflarePages = defineNitroPreset({
   extends: "cloudflare",
@@ -45,6 +47,7 @@ export const cloudflarePages = defineNitroPreset({
       await writeCFRoutes(nitro);
       await writeCFPagesHeaders(nitro);
       await writeCFPagesRedirects(nitro);
+      await writeCFWrangler(nitro);
     },
   },
 });
@@ -214,3 +217,26 @@ async function writeCFPagesRedirects(nitro: Nitro) {
 
   await fsp.writeFile(redirectsPath, contents.join("\n"));
 }
+
+async function writeCFWrangler(nitro: Nitro) {
+  type WranglerConfig = typeof nitro.options.cloudflare.wrangler;
+
+  const inlineConfig: WranglerConfig =
+    nitro.options.cloudflare?.wrangler || ({} as WranglerConfig);
+
+  let configFromFile: WranglerConfig = {} as WranglerConfig;
+  const configPath = resolve(
+    nitro.options.rootDir,
+    inlineConfig.configPath || "wrangler.toml"
+  );
+  if (existsSync(configPath)) {
+    configFromFile = parseTOML<WranglerConfig>(
+      await fsp.readFile(configPath, "utf8")
+    );
+  }
+
+  const wranglerConfig: WranglerConfig = defu(configFromFile, inlineConfig);
+
+  const wranglerPath = join(nitro.options.output.publicDir, "wrangler.toml");
+  await fsp.writeFile(wranglerPath, stringifyTOML(wranglerConfig));
+}

src/types/presets/cloudflare.ts

@@ -1,3 +1,5 @@
+import type { Config as WranglerConfig } from "./cloudflare.wrangler";
+
 /**
  * https://developers.cloudflare.com/pages/platform/functions/routing/#functions-invocation-routes
  */
@@ -13,6 +15,11 @@ export interface CloudflarePagesRoutes {
 }
 
 export interface CloudflareOptions {
+  /**
+   * Configuration for the Cloudflare Deployments
+   */
+  wrangler?: WranglerConfig;
+
   pages: {
     /**
      * Nitro will automatically generate a `_routes.json` that controls which files get served statically and