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Difference between `node_compat = true` and `compatibility_flags = [ "nodejs_compat" ]`?

The docs say that we should add

compatibility_flags = [ "nodejs_compat" ]

compatibility_flags = [ "nodejs_compat" ]

to wrangler.toml in order to use node modules. But the errors I get when running wrangler tell me to add

node_compat = true

node_compat = true

instead. Only the latter seems to work. What's the difference? Is the former deprecated and the docs out of date?

Difference between `node_compat = true` and `compatibility_flags = [ "nodejs_compat" ]`? - Cloudflare Developers