build: increase Node.js heap size in CircleCI config to 6GB (#6334)

* build: increase Node.js heap size in CircleCI configuration to 6GB

* build: increase Node.js heap size to 6GB in build script

* build: add logging for NODE_OPTIONS and V8 heap limit in build script

* build: use consistent variable names for NODE_OPTIONS

Author: adith-a-danthi

.circleci/config.yml

@@ -51,7 +51,7 @@ jobs:
         - image: cimg/node:14.21.3-browsers
       resource_class: large
       environment:
-        NODE_OPTIONS: '--max_old_space_size=3584'
+        NODE_OPTIONS: '--max-old-space-size=6144'
       steps:
         - checkout
         - install-deps
@@ -79,7 +79,7 @@ jobs:
       - image: cimg/node:14.21.3-browsers
     resource_class: large
     environment:
-      NODE_OPTIONS: '--max_old_space_size=3584'
+      NODE_OPTIONS: '--max-old-space-size=6144'
     steps:
       - checkout
       - install-deps

packages/@okta/vuepress-site/.vuepress/scripts/build.sh

@@ -1,5 +1,8 @@
 #!/bin/sh
-export NODE_OPTIONS="--max-old-space-size=4096"
+echo "[build.sh] NODE_OPTIONS inherited from environment: '${NODE_OPTIONS}'"
+export NODE_OPTIONS="${NODE_OPTIONS:-"--max-old-space-size=6144"}"
+echo "[build.sh] NODE_OPTIONS in effect: '${NODE_OPTIONS}'"
+node -e "console.log('[build.sh] effective V8 heap limit (MB):', Math.round(require('v8').getHeapStatistics().heap_size_limit/1024/1024))"
 export BUILD_WORKER_THREADS="${BUILD_WORKER_THREADS:-2}"
 cp .vuepress/scripts/updateBuildScript.js ../../../node_modules/@vuepress/core/lib/node/build/index.js
 cp .vuepress/scripts/addWorkerScript.js ../../../node_modules/@vuepress/core/lib/node/build/worker.js