Main branch added

lib/util.js

@@ -0,0 +1,78 @@
+const fs = require('fs')
+const Log = require('./logging')
+const { spawnSync } = require('child_process')
+
+// This is the valid way of retrieving configuration values for NPM <= 6, with
+// npm_package_config_* still working up to NPM 7, but no longer for NPM >= 8.
+// See https://github.com/npm/rfcs/blob/main/implemented/0021-reduce-lifecycle-script-environment.md
+const getNPMConfigFromEnv = (path) => {
+  const key = path.join('_')
+  // Npm <= 6 did not preserve dashes in package.json keys
+  const keyNoDashes = key.replace('-', '_')
+  const npm_prefix = 'npm_config_'
+  const package_config_prefix = 'npm_package_config_'
+  const package_prefix = 'npm_package_'
+  return process.env[npm_prefix + keyNoDashes] ||
+    process.env[package_config_prefix + keyNoDashes] ||
+    process.env[package_config_prefix + key] ||
+    process.env[package_prefix + keyNoDashes] ||
+    process.env[package_prefix + key]
+}
+
+// From NPM >= 8, we need to inspect the package.json file, which should
+// be available via the 'npm_package_json' environment variable.
+const getNPMConfigFromPackageJson = (path) => {
+  let packages = { config: {} }
+  if (fs.existsSync(process.env['npm_package_json'])) {
+    packages = require(process.env['npm_package_json'])
+  }
+
+  let obj = packages.config
+  for (var i = 0, len = path.length; i < len; i++) {
+    if (!obj) {
+      return obj
+    }
+    obj = obj[path[i]]
+  }
+  return obj
+}
+
+const getNPMConfig = (path) => {
+  return getNPMConfigFromEnv(path) || getNPMConfigFromPackageJson(path)
+}
+
+
+const getProjectVersion = (projectName) => {
+  return getNPMConfig(['projects', projectName, 'tag']) || getNPMConfig(['projects', projectName, 'branch'])
+}
+
+const run = (cmd, args = [], options = {}) => {
+  const { continueOnFail, ...cmdOptions } = options
+  Log.command(cmdOptions.cwd, cmd, args)
+  const prog = spawnSync(cmd, args, cmdOptions)
+  if (prog.status !== 0) {
+    if (!continueOnFail) {
+      console.log(prog.stdout && prog.stdout.toString())
+      console.error(prog.stderr && prog.stderr.toString())
+      process.exit(1)
+    }
+  }
+  return prog
+}
+
+const runGit = (repoPath, gitArgs, continueOnFail = false) => {
+  let prog = run('git', gitArgs, { cwd: repoPath, continueOnFail })
+
+  if (prog.status !== 0) {
+    return null
+  } else {
+    return prog.stdout.toString().trim()
+  }
+}
+
+module.exports = {
+  getNPMConfig,
+  getProjectVersion,
+  run,
+  runGit
+}