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47 lines
1.2 KiB
47 lines
1.2 KiB
// emit JSON describing versions of all packages currently installed (for later
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// use with shrinkwrap install)
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module.exports = exports = shrinkwrap
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var npm = require("./npm.js")
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, log = require("npmlog")
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, fs = require("fs")
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, path = require("path")
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shrinkwrap.usage = "npm shrinkwrap"
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function shrinkwrap (args, silent, cb) {
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if (typeof cb !== "function") cb = silent, silent = false
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if (args.length) {
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log.warn("shrinkwrap", "doesn't take positional args")
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}
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npm.commands.ls([], true, function (er, _, pkginfo) {
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if (er) return cb(er)
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shrinkwrap_(pkginfo, silent, cb)
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})
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}
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function shrinkwrap_ (pkginfo, silent, cb) {
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if (pkginfo.problems) {
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return cb(new Error("Problems were encountered\n"
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+"Please correct and try again.\n"
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+pkginfo.problems.join("\n")))
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}
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try {
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var swdata = JSON.stringify(pkginfo, null, 2) + "\n"
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} catch (er) {
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log.error("shrinkwrap", "Error converting package info to json")
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return cb(er)
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}
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var file = path.resolve(npm.prefix, "npm-shrinkwrap.json")
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fs.writeFile(file, swdata, function (er) {
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if (er) return cb(er)
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if (silent) return cb(null, pkginfo)
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console.log("wrote npm-shrinkwrap.json")
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cb(null, pkginfo)
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})
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}
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