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// emit JSON describing versions of all packages currently installed (for later
// use with shrinkwrap install)
module.exports = exports = shrinkwrap
var npm = require("./npm.js")
, log = require("npmlog")
, fs = require("fs")
, path = require("path")
, readJson = require("read-package-json")
, sortedObject = require("sorted-object")
shrinkwrap.usage = "npm shrinkwrap"
function shrinkwrap (args, silent, cb) {
if (typeof cb !== "function") cb = silent, silent = false
if (args.length) {
log.warn("shrinkwrap", "doesn't take positional args")
}
npm.commands.ls([], true, function (er, _, pkginfo) {
if (er) return cb(er)
shrinkwrap_(pkginfo, silent, npm.config.get("dev"), cb)
})
}
function shrinkwrap_ (pkginfo, silent, dev, cb) {
if (pkginfo.problems) {
return cb(new Error("Problems were encountered\n"
+"Please correct and try again.\n"
+pkginfo.problems.join("\n")))
}
if (!dev) {
// remove dev deps unless the user does --dev
readJson(path.resolve(npm.prefix, "package.json"), function (er, data) {
if (er)
return cb(er)
if (data.devDependencies) {
Object.keys(data.devDependencies).forEach(function (dep) {
if (data.dependencies && data.dependencies[dep]) {
// do not exclude the dev dependency if it's also listed as a dependency
return
}
log.warn("shrinkwrap", "Excluding devDependency: %s", dep)
delete pkginfo.dependencies[dep]
})
}
save(pkginfo, silent, cb)
})
} else {
save(pkginfo, silent, cb)
}
}
function save (pkginfo, silent, cb) {
// copy the keys over in a well defined order
// because javascript objects serialize arbitrarily
pkginfo.dependencies = sortedObject(pkginfo.dependencies || {})
try {
var swdata = JSON.stringify(pkginfo, null, 2) + "\n"
} catch (er) {
log.error("shrinkwrap", "Error converting package info to json")
return cb(er)
}
var file = path.resolve(npm.prefix, "npm-shrinkwrap.json")
fs.writeFile(file, swdata, function (er) {
if (er) return cb(er)
if (silent) return cb(null, pkginfo)
console.log("wrote npm-shrinkwrap.json")
cb(null, pkginfo)
})
}
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