NAME¶
npm-dedupe - Reduce duplication
SYNOPSIS¶
npm dedupe [package names...]
npm ddp [package names...]
DESCRIPTION¶
Searches the local package tree and attempts to simplify the overall structure
by moving dependencies further up the tree, where they can be more effectively
shared by multiple dependent packages.
For example, consider this dependency graph:
-
-
a
+-- b <-- depends on c@1.0.x
| `-- c@1.0.3
`-- d <-- depends on c@~1.0.9
`-- c@1.0.10
-
npm help In this case,
npm-dedupe will transform the tree to:
-
-
a
+-- b
+-- d
`-- c@1.0.10
-
Because of the hierarchical nature of node´s module lookup, b and d will
both get their dependency met by the single c package at the root level of the
tree.
If a suitable version exists at the target location in the tree already, then it
will be left untouched, but the other duplicates will be deleted.
If no suitable version can be found, then a warning is printed, and nothing is
done.
If any arguments are supplied, then they are filters, and only the named
packages will be touched.
Note that this operation transforms the dependency tree, and may result in
packages getting updated versions, perhaps from the npm registry.
This feature is experimental, and may change in future versions.
The
--tag argument will apply to all of the affected dependencies. If a
tag with the given name exists, the tagged version is preferred over newer
versions.
SEE ALSO¶
- •
- npm help ls
- •
- npm help update
- •
- npm help install
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