Allow init without prompt

doc/cli/npm-init.md

@@ -3,7 +3,7 @@ npm-init(1) -- Interactively create a package.json file
 
 ## SYNOPSIS
 
-    npm init
+    npm init [-f|--force|-y|--yes]
 
 ## DESCRIPTION
 
@@ -18,6 +18,9 @@ the options in there.
 It is strictly additive, so it does not delete options from your package.json
 without a really good reason to do so.
 
+If you invoke it with `-f`, `--force`, `-y`, or `--yes`, it will use only
+defaults and not prompt you for any options.
+
 ## SEE ALSO
 
 * <https://github.com/isaacs/init-package-json>

lib/init.js

@@ -7,33 +7,33 @@ var log = require("npmlog")
   , npm = require("./npm.js")
   , initJson = require("init-package-json")
 
-init.usage = "npm init"
+init.usage = "npm init [--force/-f]"
 
 function init (args, cb) {
   var dir = process.cwd()
   log.pause()
   npm.spinner.stop()
-  var initFile = npm.config.get('init-module')
-
-  console.log(
-    ["This utility will walk you through creating a package.json file."
-    ,"It only covers the most common items, and tries to guess sane defaults."
-    ,""
-    ,"See `npm help json` for definitive documentation on these fields"
-    ,"and exactly what they do."
-    ,""
-    ,"Use `npm install <pkg> --save` afterwards to install a package and"
-    ,"save it as a dependency in the package.json file."
-    ,""
-    ,"Press ^C at any time to quit."
-    ].join("\n"))
-
+  var initFile = npm.config.get("init-module")
+  if (!initJson.yes(npm.config)) {
+    console.log(
+      ["This utility will walk you through creating a package.json file."
+      ,"It only covers the most common items, and tries to guess sane defaults."
+      ,""
+      ,"See `npm help json` for definitive documentation on these fields"
+      ,"and exactly what they do."
+      ,""
+      ,"Use `npm install <pkg> --save` afterwards to install a package and"
+      ,"save it as a dependency in the package.json file."
+      ,""
+      ,"Press ^C at any time to quit."
+      ].join("\n"))
+  }
   initJson(dir, initFile, npm.config, function (er, data) {
     log.resume()
-    log.silly('package data', data)
-    log.info('init', 'written successfully')
-    if (er && er.message === 'canceled') {
-      log.warn('init', 'canceled')
+    log.silly("package data", data)
+    log.info("init", "written successfully")
+    if (er && er.message === "canceled") {
+      log.warn("init", "canceled")
       return cb(null, data)
     }
     cb(er, data)