Allow configuring memory limits

packages/server/src/environment.ts

@@ -95,6 +95,8 @@ const environment = {
   TOP_LEVEL_PATH:
     process.env.TOP_LEVEL_PATH || process.env.SERVER_TOP_LEVEL_PATH,
   APP_MIGRATION_TIMEOUT: parseIntSafe(process.env.APP_MIGRATION_TIMEOUT),
+  JS_RUNNER_MEMORY_LIMIT:
+    parseIntSafe(process.env.JS_RUNNER_MEMORY_LIMIT) || 64,
 }
 
 // threading can cause memory issues with node-ts in development

packages/server/src/jsRunner.ts

@@ -27,7 +27,9 @@ export function init() {
 
         const isolateRefs = bbCtx.isolateRefs
         if (!isolateRefs) {
-          const jsIsolate = new ivm.Isolate({ memoryLimit: 64 })
+          const jsIsolate = new ivm.Isolate({
+            memoryLimit: env.JS_RUNNER_MEMORY_LIMIT,
+          })
           const jsContext = jsIsolate.createContextSync()
 
           const injectedRequire = `const require = function(val){