docs: Add docs for new --only option

PR-URL: npm#9024
Bithome · Aug 12, 2015 · 4b0a78f · 4b0a78f
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diff --git a/doc/cli/npm-install.md b/doc/cli/npm-install.md
@@ -272,6 +272,9 @@ shrinkwrap file and use the package.json instead.
 The `--nodedir=/path/to/node/source` argument will allow npm to find the
 node source code so that npm can compile native modules.
 
+The `--only={prod[uction]|dev[elopment]}` argument will cause either only
+`devDependencies` or only non-`devDependencies` to be installed.
+
 See `npm-config(7)`.  Many of the configuration params have some
 effect on installation, since that's most of what npm does.
 

diff --git a/doc/misc/npm-config.md b/doc/misc/npm-config.md
@@ -572,6 +572,18 @@ Run tests on installation.
 A node module to `require()` when npm loads.  Useful for programmatic
 usage.
 
+### only
+
+* Default: null
+* Type: String
+
+When "dev" or "development" and running local `npm install` without any
+arguments, only devDependencies (and their dependencies) are installed.
+
+When "prod" or "production" and running local `npm install` without any
+arguments, only non-devDependencies (and their dependencies) are
+installed.
+
 ### optional
 
 * Default: true