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I’m trying to write a very big data chunk (resulting from JSON.stringify) into a file. It must be synchroneous, because I would like to save it during the process:exit event. However, when using fs.writeFileSync(), Node throws with this message :
FATAL ERROR: JS Allocation failed - process out of memory
I’ve tried fs.createWriteStream(), but it does not seems to work. This code output 0 bytes with medium data amount, and throws the same error with large.
My problem was in JSON.stringify. Data were too big to be stored in a unique javascript string.
I solved this issue by serializing one property per line (so there is X calls to JSON.stringify, where X is the number of properties in my object). My deserializer rebuild the object by adding every properties.