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-.TH "NPM\-DEDUPE" "1" "January 2019" "" ""
-.SH "NAME"
-\fBnpm-dedupe\fR \- Reduce duplication
-.SH SYNOPSIS
-.P
-.RS 2
-.nf
-npm dedupe
-npm ddp
-
-aliases: find\-dupes, ddp
-.fi
-.RE
-.SH DESCRIPTION
-.P
-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\.
-.P
-For example, consider this dependency graph:
-.P
-.RS 2
-.nf
-a
-+\-\- b <\-\- depends on c@1\.0\.x
-| `\-\- c@1\.0\.3
-`\-\- d <\-\- depends on c@~1\.0\.9
- `\-\- c@1\.0\.10
-.fi
-.RE
-.P
-In this case, npm help \fBnpm\-dedupe\fP will transform the tree to:
-.P
-.RS 2
-.nf
-a
-+\-\- b
-+\-\- d
-`\-\- c@1\.0\.10
-.fi
-.RE
-.P
-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\.
-.P
-The deduplication algorithm walks the tree, moving each dependency as far
-up in the tree as possible, even if duplicates are not found\. This will
-result in both a flat and deduplicated tree\.
-.P
-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\.
-.P
-Arguments are ignored\. Dedupe always acts on the entire tree\.
-.P
-Modules
-.P
-Note that this operation transforms the dependency tree, but will never
-result in new modules being installed\.
-.SH SEE ALSO
-.RS 0
-.IP \(bu 2
-npm help ls
-.IP \(bu 2
-npm help update
-.IP \(bu 2
-npm help install
-
-.RE
-