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node_modules/npm/doc/api/npm-config.md

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+npm-config(3) -- Manage the npm configuration files
+===================================================
+
+## SYNOPSIS
+
+    npm.commands.config(args, callback)
+    var val = npm.config.get(key)
+    npm.config.set(key, val)
+
+## DESCRIPTION
+
+This function acts much the same way as the command-line version.  The first
+element in the array tells config what to do. Possible values are:
+
+* `set`
+
+    Sets a config parameter.  The second element in `args` is interpreted as the
+    key, and the third element is interpreted as the value.
+
+* `get`
+
+    Gets the value of a config parameter. The second element in `args` is the
+    key to get the value of.
+
+* `delete` (`rm` or `del`)
+
+    Deletes a parameter from the config. The second element in `args` is the
+    key to delete.
+
+* `list` (`ls`)
+
+    Show all configs that aren't secret. No parameters necessary.
+
+* `edit`:
+
+    Opens the config file in the default editor. This command isn't very useful
+    programmatically, but it is made available.
+
+To programmatically access npm configuration settings, or set them for
+the duration of a program, use the `npm.config.set` and `npm.config.get`
+functions instead.
+
+## SEE ALSO
+
+* npm(3)