Replace deprecated `util._extend()` with `Object.assign()`

Proprietary

Replace deprecated util._extend(target, source) calls with Object.assign(target, source) which preserves the mutation behavior.

org.openrewrite.node.migrate.util.replace-util-extend

mod run . --recipe=org.openrewrite.node.migrate.util.replace-util-extend

Install it once, then run it on every repository under the current directory. New to the Moderne CLI? Set it up.

Replace deprecated util._extend() with Object.assign()