NodeJS - JavaScript heap out of memory

Owned by Jason Wides
Last updated: Jul 19, 2022 by Marc Amouyal
1 min read

Problem

When running the SeaLights NodeJS agent, the error "JavaScript heap out of memory" is encountered.

Solution

By default node is limited in the amount of memory it is allocated, and sometimes the SeaLights node agent requires more memory that what was allocated.
More memory can be allocated by using the max-old-space-size flag.

The flag can be passed either by using the NODE_OPTION environment variable, for example:

Linux
export NODE_OPTIONS=--max-old-space-size=4096
Windows
set NODE_OPTIONS=--max-old-space-size=4096

 

Alternatively, it can be passed directly to node process running the SeaLights agent, for example:

node --max-old-space-size=4096 ./node_modules/.bin/slnodejs scan ...