update packages to latest version

node_modules/npm/man/man3/npm-shrinkwrap.3

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+.TH "NPM\-SHRINKWRAP" "3" "March 2017" "" ""
+.SH "NAME"
+\fBnpm-shrinkwrap\fR \- programmatically generate package shrinkwrap file
+.SH SYNOPSIS
+.P
+.RS 2
+.nf
+npm\.commands\.shrinkwrap(args, [silent,] callback)
+.fi
+.RE
+.SH DESCRIPTION
+.P
+This acts much the same ways as shrinkwrapping on the command\-line\.
+.P
+This command does not take any arguments, but 'args' must be defined\.
+Beyond that, if any arguments are passed in, npm will politely warn that it
+does not take positional arguments\.
+.P
+If the 'silent' parameter is set to true, nothing will be output to the screen,
+but the shrinkwrap file will still be written\.
+.P
+Finally, 'callback' is a function that will be called when the shrinkwrap has
+been saved\.
+