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Node features the way to increase the heap size via passing in the --max-old-space-size command line flag. In create-react-app projects everything depends on the use of react-scripts. How can I pass in this parameter in such projects and where should I best do that?

Thank you for help.

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    Since those scripts are just JS files in a special directory you should be able to call the Node process like you usually do, and pass node_modules/.bin/react-scripts as the argument to it. It is symlinked to the actual script. Commented May 18, 2017 at 15:14

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Thanks a lot to @dan-abramov as his comment is the answer! (Give him the vote up in case you come across this).

You can just put e.g. node --max_old_space_size=4096 node_modules/.bin/react-scripts start in there instead of react-scripts start

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This is giving an error : basedir=$(dirname.......) line 2 of react scripts. It says missing ) after argument list. PLease help
I have same issue, Our ubuntu server ram 1GB so what i need to do ?
For smal servers you need put less memory. To me works with --max_old_space_size=256
what is 4096 here 4096 GB?
This is 4096 MB so 4 GB
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"build": "react-scripts --max_old_space_size=4096 build"

This should work

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what is 4096 here 4096 GB or MB?
@vinayakshahdeo it means 4096 MB
I tried this and didn't work for me even after setting 8 Gb or 12 Gb
Getting FATAL ERROR: MarkCompactCollector: young object promotion failed Allocation failed - JavaScript heap out of memory
@Sandeepsandy I think I fixed all heap out of memory ocurrances by upgrading NodeJs.
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You can disable generation of source maps as described in https://create-react-app.dev/docs/advanced-configuration

Indeed as per the documentation:

When set to false, source maps are not generated for a production build. This solves out of memory (OOM) issues on some smaller machines.

Which is the case when you got an Heap Out Of Memory error

To do so, create a .env file and add GENERATE_SOURCEMAP=false

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One line answer, run on terminal -> export NODE_OPTIONS=--max_old_space_size=4096

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If you're using craco build just add the flag in like the below

craco --max_old_space_size=4096 build
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Add

ENV GENERATE_SOURCEMAP=false

in your docker file. This worked for me.

Thanks!

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