Set cpu=1 in next.config.js (#1254)

* Set cpu=1 in next.config.js

* Make cpu=1 a prod-only thing.

Author: sfc-gh-tteixeira

next.config.js

@@ -1,5 +1,13 @@
 const IS_DEV = process.env.NODE_ENV === "development";
 
+const PROD_OPTIMIZATIONS = IS_DEV
+  ? {}
+  : {
+      experimental: {
+        cpus: 1,
+      },
+    };
+
 // IMPORTANT: Keep this in sync with netlify.toml
 // prettier-ignore
 const CSP_HEADER = [
@@ -75,6 +83,8 @@ const CSP_HEADER = [
 module.exports = {
   output: "export",
 
+  ...PROD_OPTIMIZATIONS,
+
   webpack: (configuration) => {
     // Don't try to polyfill the fs module.
     configuration.resolve.fallback = { fs: false };