npm explain <folder | specifier> alias: why
This command will print the chain of dependencies causing a given package to be installed in the current project.
Positional arguments can be either folders within node_modules
, or [email protected]
specifiers, which will select the dependency relationships to explain.
For example, running npm explain glob
within npm's source tree will show:
[email protected] node_modules/glob [email protected]"^7.1.4" from the root project [email protected] dev node_modules/tacks/node_modules/glob [email protected]"^7.0.5" from [email protected] node_modules/tacks/node_modules/rimraf [email protected]"^2.6.2" from [email protected] node_modules/tacks dev [email protected]"^1.3.0" from the root project
To explain just the package residing at a specific folder, pass that as the argument to the command. This can be useful when trying to figure out exactly why a given dependency is being duplicated to satisfy conflicting version requirements within the project.
$ npm explain node_modules/nyc/node_modules/find-up [email protected] dev node_modules/nyc/node_modules/find-up [email protected]"^3.0.0" from [email protected] node_modules/nyc [email protected]"^14.1.1" from [email protected] node_modules/tap dev [email protected]"^14.10.8" from the root project
json
Whether or not to output JSON data, rather than the normal output.
npm pkg set
it enables parsing set values with JSON.parse() before saving them to your package.json
.Not supported by all npm commands.
workspace
Enable running a command in the context of the configured workspaces of the current project while filtering by running only the workspaces defined by this configuration option.
Valid values for the workspace
config are either:
When set for the npm init
command, this may be set to the folder of a workspace which does not yet exist, to create the folder and set it up as a brand new workspace within the project.
This value is not exported to the environment for child processes.
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https://docs.npmjs.com/cli/v8/commands/npm-explain