feat(switching): allows cli to switch versions with param

package.json

@@ -17,7 +17,7 @@
     "http-call": "^5.3.0",
     "lodash": "^4.17.21",
     "log-chopper": "^1.0.2",
-    "semver": "^7.3.4",
+    "semver": "^7.3.5",
     "tar-fs": "^2.1.1"
   },
   "devDependencies": {

src/commands/update.ts

@@ -7,6 +7,7 @@ import * as fs from 'fs-extra'
 import HTTP from 'http-call'
 import * as _ from 'lodash'
 import * as path from 'path'
+import * as semver from 'semver'
 
 import {extract} from '../tar'
 import {ls, wait} from '../util'
@@ -19,6 +20,7 @@ export default class UpdateCommand extends Command {
   static flags: flags.Input<any> = {
     autoupdate: flags.boolean({hidden: true}),
     'from-local': flags.boolean({description: 'interactively choose an already installed version'}),
+    'switch-to': flags.string({char: 'v', description: 'specify a specific version to switch to'}),
   }
 
   private autoupdate!: boolean
@@ -41,18 +43,19 @@ export default class UpdateCommand extends Command {
 
     this.channel = args.channel || await this.determineChannel()
 
+    // Do not show known non-local version folder names, bin and current.
+    // const localVersions = fs.readdirSync(this.clientRoot).filter(dirOrFile => dirOrFile !== 'bin' && dirOrFile !== 'current')
+
     if (flags['from-local']) {
       await this.ensureClientDir()
       this.debug(`Looking for locally installed versions at ${this.clientRoot}`)
 
-      // Do not show known non-local version folder names, bin and current.
-      const versions = fs.readdirSync(this.clientRoot).filter(dirOrFile => dirOrFile !== 'bin' && dirOrFile !== 'current')
-      if (versions.length === 0) throw new Error('No locally installed versions found.')
+      if (localVersions.length === 0) throw new Error('No locally installed versions found.')
 
-      this.log(`Found versions: \n${versions.map(version => `     ${version}`).join('\n')}\n`)
+      this.log(`Found versions: \n${localVersions.map(version => `     ${version}`).join('\n')}\n`)
 
       const pinToVersion = await cli.prompt('Enter a version to update to')
-      if (!versions.includes(pinToVersion)) throw new Error(`Version ${pinToVersion} not found in the locally installed versions.`)
+      if (!localVersions.includes(pinToVersion)) throw new Error(`Version ${pinToVersion} not found in the locally installed versions.`)
 
       if (!await fs.pathExists(path.join(this.clientRoot, pinToVersion))) {
         throw new Error(`Version ${pinToVersion} is not already installed at ${this.clientRoot}.`)
@@ -64,11 +67,25 @@ export default class UpdateCommand extends Command {
       this.log()
       this.log(`Updating to an already installed version will not update the channel. If autoupdate is enabled, the CLI will eventually be updated back to ${this.channel}.`)
     } else {
+      let targetVersion
+      if (flags['switch-to']) {
+        targetVersion = semver.clean(flags['switch-to'])
+        this.debug(`Flag overriden target version: ${targetVersion}`)
+        // eslint-disable-next-line @typescript-eslint/no-unused-vars
+        const [_, channel] = targetVersion?.split('-') || ['', '']
+        if (channel) {
+          this.channel = channel.substr(0, channel.indexOf('.'))
+        }
+        this.debug(`Flag overriden target channel: ${this.channel}`)
+      }
+
       cli.action.start(`${this.config.name}: Updating CLI`)
       await this.config.runHook('preupdate', {channel: this.channel})
       const manifest = await this.fetchManifest()
       this.currentVersion = await this.determineCurrentVersion()
-      this.updatedVersion = (manifest as any).sha ? `${manifest.version}-${(manifest as any).sha}` : manifest.version
+
+      this.updatedVersion = (manifest as any).sha ? `${targetVersion || manifest.version}-${(manifest as any).sha}` : targetVersion || manifest.version
+      this.debug(`Updating to ${this.updatedVersion}`)
       const reason = await this.skipUpdate()
       if (reason) cli.action.stop(reason || 'done')
       else await this.update(manifest)
@@ -179,6 +196,7 @@ export default class UpdateCommand extends Command {
   private async update(manifest: IManifest, channel = 'stable') {
     const {channel: manifestChannel} = manifest
     if (manifestChannel) channel = manifestChannel
+
     cli.action.start(`${this.config.name}: Updating CLI from ${color.green(this.currentVersion)} to ${color.green(this.updatedVersion)}${channel === 'stable' ? '' : ' (' + color.yellow(channel) + ')'}`)
 
     await this.ensureClientDir()

yarn.lock

@@ -237,7 +237,7 @@
 
 "@types/semver@^7.3.4":
   version "7.3.4"
-  resolved "https://registry.yarnpkg.com/@types/semver/-/semver-7.3.4.tgz#43d7168fec6fa0988bb1a513a697b29296721afb"
+  resolved "https://registry.npmjs.org/@types/semver/-/semver-7.3.4.tgz#43d7168fec6fa0988bb1a513a697b29296721afb"
   integrity sha512-+nVsLKlcUCeMzD2ufHEYuJ9a2ovstb6Dp52A5VsoKxDXgvE051XgHI/33I1EymwkRGQkwnA0LkhnUzituGs4EQ==
 
 "@types/sinon@*":
@@ -2076,13 +2076,20 @@ semver@^6.0.0, semver@^6.3.0:
   resolved "https://registry.yarnpkg.com/semver/-/semver-6.3.0.tgz#ee0a64c8af5e8ceea67687b133761e1becbd1d3d"
   integrity sha512-b39TBaTSfV6yBrapU89p5fKekE2m/NwnDocOVruQFS1/veMgdzuPcnOM34M6CwxW8jH/lxEa5rBoDeUwu5HHTw==
 
-semver@^7.2.1, semver@^7.3.2, semver@^7.3.4:
+semver@^7.2.1, semver@^7.3.2:
   version "7.3.4"
   resolved "https://registry.yarnpkg.com/semver/-/semver-7.3.4.tgz#27aaa7d2e4ca76452f98d3add093a72c943edc97"
   integrity sha512-tCfb2WLjqFAtXn4KEdxIhalnRtoKFN7nAwj0B3ZXCbQloV2tq5eDbcTmT68JJD3nRJq24/XgxtQKFIpQdtvmVw==
   dependencies:
     lru-cache "^6.0.0"
 
+semver@^7.3.5:
+  version "7.3.5"
+  resolved "https://registry.npmjs.org/semver/-/semver-7.3.5.tgz#0b621c879348d8998e4b0e4be94b3f12e6018ef7"
+  integrity sha512-PoeGJYh8HK4BTO/a9Tf6ZG3veo/A7ZVsYrSA6J8ny9nb3B1VrpkuN+z9OE5wfE5p6H4LchYZsegiQgbJD94ZFQ==
+  dependencies:
+    lru-cache "^6.0.0"
+
 serialize-javascript@5.0.1:
   version "5.0.1"
   resolved "https://registry.yarnpkg.com/serialize-javascript/-/serialize-javascript-5.0.1.tgz#7886ec848049a462467a97d3d918ebb2aaf934f4"