Enable modules in Code node

For security reasons, the Code node restricts importing modules. It's possible to lift that restriction for built-in and external modules by setting the following environment variables:

• NODE_FUNCTION_ALLOW_BUILTIN: For built-in modules
• NODE_FUNCTION_ALLOW_EXTERNAL: For external modules sourced from n8n/node\_modules directory. External module support is disabled when an environment variable isn't set.

# Allows usage of all builtin modules
export NODE_FUNCTION_ALLOW_BUILTIN=*

# Allows usage of only crypto
export NODE_FUNCTION_ALLOW_BUILTIN=crypto

# Allows usage of only crypto and fs
export NODE_FUNCTION_ALLOW_BUILTIN=crypto,fs

# Allow usage of external npm modules.
export NODE_FUNCTION_ALLOW_EXTERNAL=moment,lodash

Refer to Environment variables reference for more information on these variables.