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55 lines
1.2 KiB
JavaScript
55 lines
1.2 KiB
JavaScript
6 years ago
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'use strict';
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var url = require('url');
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var got = require('got');
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var registryUrl = require('registry-url');
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var registryAuthToken = require('registry-auth-token');
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var semver = require('semver');
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module.exports = function (name, version) {
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var scope = name.split('/')[0];
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var regUrl = registryUrl(scope);
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var pkgUrl = url.resolve(regUrl, encodeURIComponent(name).replace(/^%40/, '@'));
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var authInfo = registryAuthToken(regUrl);
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var headers = {};
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if (authInfo) {
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headers.authorization = authInfo.type + ' ' + authInfo.token;
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}
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return got(pkgUrl, {
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json: true,
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headers: headers
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})
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.then(function (res) {
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var data = res.body;
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if (version === 'latest') {
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data = data.versions[data['dist-tags'].latest];
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} else if (version) {
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if (!data.versions[version]) {
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var versions = Object.keys(data.versions);
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version = semver.maxSatisfying(versions, version);
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if (!version) {
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throw new Error('Version doesn\'t exist');
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}
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}
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data = data.versions[version];
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if (!data) {
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throw new Error('Version doesn\'t exist');
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}
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}
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return data;
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})
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.catch(function (err) {
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if (err.statusCode === 404) {
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throw new Error('Package `' + name + '` doesn\'t exist');
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}
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throw err;
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});
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};
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