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| #!/usr/bin/env node
const path = require('path');
const yargs = require('yargs');
const execa = require('execa');
const jsonfile = require('jsonfile');
const noop = () => {};
async function lernaCommand(command, options) {
const { devBranch } = options;
const branch = await getCurrentBranch();
if (branch !== devBranch) {
return Promise.reject(
`You should be in"${devBranch}" branch to detect changes but current branch is"${branch}".`
);
}
const latestVersion = await getLatestVersion();
const bumpVersion = async bump => {
await lernaVersion(latestVersion, bump);
const version = await getLernaVersion();
const packageJsonPath = path.resolve(__dirname, 'package.json');
const packageJson = await jsonfile.readFile(packageJsonPath);
packageJson.version = version;
await jsonfile.writeFile(packageJsonPath, packageJson, { spaces: 2 });
await exec('git', ['add', '-A']);
await exec('git', ['commit', '-m', 'Version bump.']);
return version;
};
const reject = e => {
if (typeof e === 'string') {
return Promise.reject(e);
}
return Promise.reject('Unable to detect any changes in packages, probably nothing has changed.');
};
switch (command) {
case 'publish': {
const { bump, skipVersion, releaseBranch } = options;
if (releaseBranch === devBranch) {
return Promise.reject('Release and development branches can\'t be the same.');
}
try {
const version = skipVersion ? await getLernaVersion() : await bumpVersion(bump);
await lernaPublish(latestVersion, version);
await exec('git', ['checkout', releaseBranch]);
await exec('git', ['merge', '--no-ff', devBranch, '-m', `Version ${version}.`]);
await exec('git', ['tag', '-a', version, '-m', `Version ${version}.`]);
await exec('git', ['checkout', devBranch]);
}
catch (e) {
return reject(e);
}
break;
}
case 'version': {
const { bump } = options;
try {
await bumpVersion(bump);
}
catch (e) {
return reject(e);
}
break;
}
case 'changed': {
try {
await lernaChanged(latestVersion);
}
catch (e) {
return reject(e);
}
break;
}
}
}
async function lernaPublish(since, version) {
if (since === version) {
return Promise.reject(`Unable to publish packages with same version ${version}.`);
}
return exec('lerna', ['publish', '--since', since, version, '--no-push', '--no-git-tag-version', '--yes']);
}
async function lernaVersion(since, bump) {
return exec('lerna', ['version', '--since', since, bump, '--no-push', '--no-git-tag-version', '--yes']);
}
async function lernaChanged(since) {
return exec('lerna', ['changed', '--since', since]);
}
async function patch() {
try {
await exec('git', ['apply', '-p3', '--directory', 'node_modules/@lerna/version', 'lerna-version-since.patch']);
}
catch (e) {
return Promise.reject('Lerna Gitflow patch is not applied (probably, it\'s already applied before).');
}
}
async function getCurrentBranch() {
const { stdout } = await exec('git', ['branch']);
const match = stdout.match(/\\* ([\\S]+)/);
if (match === null) {
return Promise.reject('Unable to detect current git branch.');
}
return match[1];
}
async function getLatestTaggedCommit() {
const { stdout } = await exec('git', ['rev-list', '--tags', '--max-count', 1]);
if (!stdout) {
return Promise.reject('Unable to find any tagged commit.');
}
return stdout;
}
async function getLatestVersion() {
const commit = await getLatestTaggedCommit();
const { stdout } = await exec('git', ['describe', '--tags', commit]);
return stdout;
}
async function getLernaVersion() {
const lernaJson = await jsonfile.readFile(path.resolve(__dirname, 'lerna.json'));
return lernaJson.version;
}
function exec(cmd, args, opts) {
console.log(`$ ${cmd} ${args.join(' ')}`);
const promise = execa(cmd, args, opts);
promise.stdout.pipe(process.stdout);
promise.stderr.pipe(process.stderr);
return promise;
}
yargs
.wrap(null)
.strict(true)
.help(true, 'Show help')
.version(false)
.fail((msg, error) => {
console.error(error);
if (msg) {
console.error(msg);
}
})
.demandCommand()
.command(
'publish <bump>',
'Bump and commit packages\' in development branch, then publish, merge into and tag in release branch',
yargs => yargs
.positional('bump', {
describe: 'Type of version update',
type: 'string'
})
.option('skip-version', {
describe: 'Skip version bumping and commiting in development branch',
type: 'boolean',
default: false
}),
opts => lernaCommand('publish', opts)
)
.command(
'version <bump>',
'Bump and commit packages\' version in development branch',
yargs => yargs
.positional('bump', {
describe: 'Type of version update',
type: 'string'
}),
opts => lernaCommand('version', opts)
)
.command(
'changes',
'Detect packages changes since latest release',
noop,
opts => lernaCommand('changed', opts)
)
.command('patch', 'Patch Lerna to use with Gitflow', noop, () => patch())
.options({
'dev-branch': {
describe: 'Name of git development branch',
type: 'string',
demandOption: true,
default: 'develop'
},
'release-branch': {
describe: 'Name of git release branch',
type: 'string',
demandOption: true,
default: 'master'
}
})
.parse(); |
