| 1 | 'use strict';
|
| 2 | const url = require('url');
|
| 3 | const got = require('got');
|
| 4 | const registryUrl = require('registry-url');
|
| 5 | const registryAuthToken = require('registry-auth-token');
|
| 6 | const semver = require('semver');
|
| 7 |
|
| 8 | module.exports = (name, opts) => {
|
| 9 | const scope = name.split('/')[0];
|
| 10 | const regUrl = registryUrl(scope);
|
| 11 | const pkgUrl = url.resolve(regUrl, encodeURIComponent(name).replace(/^%40/, '@'));
|
| 12 | const authInfo = registryAuthToken(regUrl, {recursive: true});
|
| 13 |
|
| 14 | opts = Object.assign({
|
| 15 | version: 'latest'
|
| 16 | }, opts);
|
| 17 |
|
| 18 | const headers = {
|
| 19 | accept: 'application/vnd.npm.install-v1+json; q=1.0, application/json; q=0.8, */*'
|
| 20 | };
|
| 21 |
|
| 22 | if (opts.fullMetadata) {
|
| 23 | delete headers.accept;
|
| 24 | }
|
| 25 |
|
| 26 | if (authInfo) {
|
| 27 | headers.authorization = `${authInfo.type} ${authInfo.token}`;
|
| 28 | }
|
| 29 |
|
| 30 | return got(pkgUrl, {json: true, headers})
|
| 31 | .then(res => {
|
| 32 | let data = res.body;
|
| 33 | let version = opts.version;
|
| 34 |
|
| 35 | if (opts.allVersions) {
|
| 36 | return data;
|
| 37 | }
|
| 38 |
|
| 39 | if (data['dist-tags'][version]) {
|
| 40 | data = data.versions[data['dist-tags'][version]];
|
| 41 | } else if (version) {
|
| 42 | if (!data.versions[version]) {
|
| 43 | const versions = Object.keys(data.versions);
|
| 44 | version = semver.maxSatisfying(versions, version);
|
| 45 |
|
| 46 | if (!version) {
|
| 47 | throw new Error('Version doesn\'t exist');
|
| 48 | }
|
| 49 | }
|
| 50 |
|
| 51 | data = data.versions[version];
|
| 52 |
|
| 53 | if (!data) {
|
| 54 | throw new Error('Version doesn\'t exist');
|
| 55 | }
|
| 56 | }
|
| 57 |
|
| 58 | return data;
|
| 59 | })
|
| 60 | .catch(err => {
|
| 61 | if (err.statusCode === 404) {
|
| 62 | throw new Error(`Package \`${name}\` doesn't exist`);
|
| 63 | }
|
| 64 |
|
| 65 | throw err;
|
| 66 | });
|
| 67 | };
|