"Fossies" - the Fresh Open Source Software Archive

Member "node-v12.18.4-win-x64/node_modules/npm/docs/public/cli-commands/npm-dedupe/index.html" (13 Jul 2020, 41552 Bytes) of package /windows/www/node-v12.18.4-win-x64.zip:


Caution: In this restricted "Fossies" environment the current HTML page may not be correctly presentated and may have some non-functional links. You can here alternatively try to browse the pure source code or just view or download the uninterpreted raw source code. If the rendering is insufficient you may try to find and view the page on the project site itself.

npm dedupe

Reduce duplication

Synopsis

npm dedupe
npm ddp

aliases: find-dupes, ddp

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

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.

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.

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.

Arguments are ignored. Dedupe always acts on the entire tree.

Modules

Note that this operation transforms the dependency tree, but will never result in new modules being installed.

See Also

👀 Found a typo? Let us know!

The current stable version of npm is here. To upgrade, run: npm install npm@latest -g

To report bugs or submit feature requests for the docs, please post here. Submit npm issues here.