forked from yarnpkg/yarn
/
policies.js
165 lines (128 loc) · 4.19 KB
/
policies.js
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/* @flow */
import type {Reporter} from '../../reporters/index.js';
import type Config from '../../config.js';
import buildSubCommands from './_build-sub-commands.js';
import {getRcConfigForFolder} from '../../rc.js';
import * as fs from '../../util/fs.js';
import {stringify} from '../../lockfile';
const chalk = require('chalk');
const invariant = require('invariant');
const path = require('path');
const semver = require('semver');
type ReleaseAsset = {|
id: any,
name: string,
browser_download_url: string,
|};
type Release = {|
id: any,
draft: boolean,
prerelease: boolean,
tag_name: string,
version: {|
version: string,
|},
assets: Array<ReleaseAsset>,
|};
function getBundleAsset(release: Release): ?ReleaseAsset {
return release.assets.find(asset => {
return asset.name.match(/^yarn-[0-9]+\.[0-9]+\.[0-9]+\.js$/);
});
}
type FetchReleasesOptions = {|
includePrereleases: boolean,
|};
async function fetchReleases(
config: Config,
{includePrereleases = false}: FetchReleasesOptions = {},
): Promise<Array<Release>> {
const token = process.env.GITHUB_TOKEN;
const tokenUrlParameter = token ? `?access_token=${token}` : '';
const request: Array<Release> = await config.requestManager.request({
url: `https://api.github.com/repos/yarnpkg/yarn/releases${tokenUrlParameter}`,
json: true,
});
const releases = request.filter(release => {
if (release.draft) {
return false;
}
if (release.prerelease && !includePrereleases) {
return false;
}
// $FlowFixMe
release.version = semver.coerce(release.tag_name);
if (!release.version) {
return false;
}
if (!getBundleAsset(release)) {
return false;
}
return true;
});
releases.sort((a, b) => {
// $FlowFixMe
return -semver.compare(a.version, b.version);
});
return releases;
}
function fetchBundle(config: Config, url: string): Promise<Buffer> {
return config.requestManager.request({
url,
buffer: true,
});
}
export function hasWrapper(flags: Object, args: Array<string>): boolean {
return false;
}
const {run, setFlags, examples} = buildSubCommands('policies', {
async setVersion(config: Config, reporter: Reporter, flags: Object, args: Array<string>): Promise<void> {
let range = args[0] || 'latest';
let allowRc = flags.rc;
reporter.log(`Resolving ${chalk.yellow(range)} to a url...`);
if (range === 'rc') {
range = 'latest';
allowRc = true;
}
if (range === 'latest') {
range = '*';
}
let bundleUrl;
let bundleVersion;
if (range === 'nightly' || range === 'nightlies') {
bundleUrl = 'https://nightly.yarnpkg.com/latest.js';
bundleVersion = 'nightly';
} else if (range === 'berry' || range === 'v2' || range === '2') {
bundleUrl = 'https://github.com/yarnpkg/berry/raw/master/packages/berry-cli/bin/berry.js';
bundleVersion = 'berry';
} else {
const releases = await fetchReleases(config, {
includePrereleases: allowRc,
});
const release = releases.find(release => {
// $FlowFixMe
return semver.satisfies(release.version, range);
});
if (!release) {
throw new Error(`Release not found: ${range}`);
}
const asset = getBundleAsset(release);
invariant(asset, 'The bundle asset should exist');
bundleUrl = asset.browser_download_url;
bundleVersion = release.version.version;
}
reporter.log(`Downloading ${chalk.green(bundleUrl)}...`);
const bundle = await fetchBundle(config, bundleUrl);
const rc = getRcConfigForFolder(config.lockfileFolder);
const yarnPath = path.resolve(config.lockfileFolder, `.yarn/releases/yarn-${bundleVersion}.js`);
reporter.log(`Saving it into ${chalk.magenta(yarnPath)}...`);
await fs.mkdirp(path.dirname(yarnPath));
await fs.writeFile(yarnPath, bundle);
await fs.chmod(yarnPath, 0o755);
const rcPath = `${config.lockfileFolder}/.yarnrc`;
reporter.log(`Updating ${chalk.magenta(rcPath)}...`);
rc['yarn-path'] = path.relative(config.lockfileFolder, yarnPath);
await fs.writeFilePreservingEol(rcPath, `${stringify(rc)}\n`);
reporter.log(`Done!`);
},
});
export {run, setFlags, examples};