Uses mixin-deep import

Delegates to mixinDeep

Nested object merging

Array preservation

Null handling

Function handling

Primitive replacement

Multiple source support

Uses mixin-deep

Deep merge implementation

Multiple source merging

Non-mutating merge

Correct precedence

Uses mixin-deep package

Correct function call

Empty object target

Multiple source handling

Return value usage

Proper argument spreading

Imports mixin-deep

Uses mixin-deep function

Passes multiple sources

Empty object pattern

Correct return value

mixin-deep import

Empty object pattern

Multiple source merging

Variable arguments handling

Deep merge behavior

Uses mixin-deep

Correct function call

Non-mutating merge

Proper return value

Uses mixin-deep

Non-mutating implementation

Multiple source handling

Array replacement behavior

Test case validation

Uses mixin-deep

Calls mixinDeep function

Handles sparse inputs

Empty object target

Correct argument order

Uses mixin-deep

Passes multiple sources

Handles empty object

Leverages built-in preservation

Uses mixin-deep import

In-place mutation

Returns mutated reference

Correct argument order

No manual merging