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Modularise code, add batch to npm version info requests
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| function Batch () { | ||
| if (!(this instanceof Batch)) return new Batch() | ||
| this._batch = {} | ||
| } | ||
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| /** | ||
| * Create or add a callback function to the end of a batch for a given key. | ||
| * @param key | ||
| * @param cb | ||
| */ | ||
| Batch.prototype.push = function (key, cb) { | ||
| this._batch[key] = this._batch[key] || [] | ||
| this._batch[key].push(cb) | ||
| } | ||
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| /** | ||
| * Determine if there is a batch for the given key. | ||
| * @param {String} key | ||
| * @returns {boolean} | ||
| */ | ||
| Batch.prototype.exists = function (key) { | ||
| return this._batch[key] != null | ||
| } | ||
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| /** | ||
| * Call all the batched callback functions for a key and remove them. | ||
| * @param {String} key ID of the batch operation | ||
| * @param {Function} fn Function to call for each | ||
| */ | ||
| Batch.prototype.call = function (key, cb) { | ||
| var cbs = this._batch[key] | ||
| this._batch[key] = null | ||
| cbs.forEach(cb) | ||
| } | ||
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| module.exports = Batch |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| var npm = require('npm') | ||
| var Batch = require('./batch') | ||
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| var batch = new Batch() | ||
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| /** | ||
| * Get info about the versions for this dependency. Returns an object with | ||
| * `current` and `versions` properties. Where `current` is the version you'd | ||
| * get when you `npm install [package]` and `versions` is a sorted array of | ||
| * available versions for the dependency. | ||
| * @param {String} name Dependency name | ||
| * @param {Object} opts Options | ||
| * @param {Object} [opts.npm] npm configuration options | ||
| */ | ||
| function getVersionsInfo (name, opts, cb) { | ||
| if (batch.exists(name)) { | ||
| return batch.push(name, cb) | ||
| } | ||
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| batch.push(name, cb) | ||
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| npm.load(opts.npm || {}, function (err) { | ||
| if (err) return batch.call(name, function (cb) { cb(err) }) | ||
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| npm.commands.view([name, 'versions', 'time'], true, function (err, data) { | ||
| if (err) return batch.call(name, function (cb) { cb(err) }) | ||
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| var currentVersion = Object.keys(data)[0] | ||
| var versions = null | ||
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| // `npm view 0 versions` returns {} | ||
| if (!currentVersion) { | ||
| return batch.call(name, function (cb) { | ||
| cb(new Error('Failed to get versions for ' + name)) | ||
| }) | ||
| } | ||
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| // Some packages simply don't have a time object | ||
| if (data[currentVersion].time) { | ||
| versions = data[currentVersion].versions.sort(function (a, b) { | ||
| a = data[currentVersion].time[a] | ||
| b = data[currentVersion].time[b] | ||
| return (a < b ? -1 : (a > b ? 1 : 0)) | ||
| }) | ||
| } else { | ||
| versions = data[currentVersion].versions | ||
| } | ||
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| batch.call(name, function (cb) { | ||
| cb(null, { current: currentVersion, versions: versions }) | ||
| }) | ||
| }) | ||
| }) | ||
| } | ||
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| exports.getVersionsInfo = getVersionsInfo |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| var semver = require('semver') | ||
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| var unstablePattern = /[a-z+-]/i | ||
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| /** | ||
| * Determine if a version is a stable version or not. | ||
| * @param {String} version | ||
| * @return {Boolean} | ||
| */ | ||
| function isStable (version) { | ||
| return !unstablePattern.test(version || '') | ||
| } | ||
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| exports.isStable = isStable | ||
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| /** | ||
| * Determine if a version is a SCM URL or not. | ||
| * @param {String} version | ||
| * @return {Boolean} | ||
| */ | ||
| function isScm (version) { | ||
| var scmPrefixes = ['git:', 'git+ssh:', 'https:', 'git+https:'] | ||
| var blacklisted = scmPrefixes.filter(function (prefix) { | ||
| return version.indexOf(prefix) === 0 | ||
| }) | ||
| return !!blacklisted.length | ||
| } | ||
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| exports.isScm = isScm | ||
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| /** | ||
| * Get the latest stable version from a list of versions in ascending order. | ||
| * @param {Array} versions | ||
| * @return {String} | ||
| */ | ||
| function getLatestStable (versions) { | ||
| versions = versions.slice() | ||
| while (versions.length) { | ||
| var version = versions.pop() | ||
| if (isStable(version)) { | ||
| return version | ||
| } | ||
| } | ||
| return null | ||
| } | ||
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| exports.getLatestStable = getLatestStable | ||
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| /** | ||
| * Get the latest version and latest stable version | ||
| * @param {String} current The version you get when you `npm install [package]` | ||
| * @param {Array} versions All versions available | ||
| * @param {Object} opts Options | ||
| * @param {Boolean} [opts.loose] Use loose option when querying semver | ||
| */ | ||
| function getLatest (current, versions, opts) { | ||
| var stable = current | ||
| var latest = versions[versions.length - 1] | ||
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| if (!isStable(stable)) { | ||
| stable = getLatestStable(versions) | ||
| } | ||
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| // getLatestStable might not have found a stable version | ||
| if (stable) { | ||
| // Latest is the most recent version with higher version than stable | ||
| for (var i = versions.length - 1; i >= 0; i--) { | ||
| // If !opts.loose then this may throw | ||
| if (semver.gt(versions[i], stable, opts.loose)) { | ||
| latest = versions[i] | ||
| break | ||
| } | ||
| } | ||
| } | ||
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| return { latest: latest, stable: stable } | ||
| } | ||
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| exports.getLatest = getLatest | ||
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| function getVersionsInRange (range, versions, loose) { | ||
| return versions.filter(function (v) { | ||
| return semver.satisfies(v, range, loose) | ||
| }) | ||
| } | ||
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| exports.getVersionsInRange = getVersionsInRange |
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