fix: blocking stdout and stderr (#901)

packages/bundler-okam/index.js

@@ -37,6 +37,22 @@ function lessLoader(fn, opts) {
 // export for test only
 exports._lessLoader = lessLoader;
 
+// ref:
+// https://github.com/vercel/next.js/pull/51883
+function blockStdout() {
+  if (process.platform === 'darwin') {
+    // rust needs stdout to be blocking, otherwise it will throw an error (on macOS at least) when writing a lot of data (logs) to it
+    // see https://github.com/napi-rs/napi-rs/issues/1630
+    // and https://github.com/nodejs/node/blob/main/doc/api/process.md#a-note-on-process-io
+    if (process.stdout._handle != null) {
+      process.stdout._handle.setBlocking(true);
+    }
+    if (process.stderr._handle != null) {
+      process.stderr._handle.setBlocking(true);
+    }
+  }
+}
+
 exports.build = async function (opts) {
   assert(opts, 'opts should be supplied');
   const {
@@ -55,6 +71,7 @@ exports.build = async function (opts) {
     okamConfig.moduleIdStrategy = 'hashed';
   }
 
+  blockStdout();
   const { build } = require('@okamjs/okam');
   try {
     await build({
@@ -185,6 +202,7 @@ exports.dev = async function (opts) {
   server.on('upgrade', wsProxy.upgrade);
 
   // okam dev
+  blockStdout();
   const { build } = require('@okamjs/okam');
   const okamConfig = await getOkamConfig(opts);
   okamConfig.hmr = { port: hmrPort, host: opts.host };