Is it possible to deploy lightning web components to an org with an api version lower than 45?

Question

I'd like to start developing LWCs in my dev sandbox, but it's current api version is 44. I get this error when trying to deploy my lwc.

Starting SFDX: Deploy Source to Org

19:30:37.961 sfdx force:source:deploy --json --loglevel fatal --sourcepath /Users/tyler/code/salesforce/HelloWorld/force-app/main/default/lwc {"message":"Deploy failed.","status":1,"stack":"DeployFailed: Deploy failed.\n at ALMError (/Users/tyler/.local/share/sfdx/plugins/node_modules/salesforce-alm/dist/lib/almError.js:44:19)\n at MetadataRegistry.initializeMetadataTypeInfos.then.catch.e (/Users/tyler/.local/share/sfdx/plugins/node_modules/salesforce-alm/dist/lib/source/sourceApiCommand.js:67:35)\n at tryCatcher (/Users/tyler/.local/share/sfdx/plugins/node_modules/bluebird/js/release/util.js:16:23)\n at Promise._settlePromiseFromHandler (/Users/tyler/.local/share/sfdx/plugins/node_modules/bluebird/js/release/promise.js:510:31)\n at Promise._settlePromise (/Users/tyler/.local/share/sfdx/plugins/node_modules/bluebird/js/release/promise.js:567:18)\n at Promise._settlePromise0 (/Users/tyler/.local/share/sfdx/plugins/node_modules/bluebird/js/release/promise.js:612:10)\n at Promise._settlePromises (/Users/tyler/.local/share/sfdx/plugins/node_modules/bluebird/js/release/promise.js:687:18)\n at Async._drainQueue (/Users/tyler/.local/share/sfdx/plugins/node_modules/bluebird/js/release/async.js:138:16)\n at Async._drainQueues (/Users/tyler/.local/share/sfdx/plugins/node_modules/bluebird/js/release/async.js:148:10)\n at Immediate.Async.drainQueues (/Users/tyler/.local/share/sfdx/plugins/node_modules/bluebird/js/release/async.js:17:14)\n at runCallback (timers.js:789:20)\n at tryOnImmediate (timers.js:751:5)\n at processImmediate [as _immediateCallback] (timers.js:722:5)","name":"DeployFailed","result":[{"error":"Invalid version specified:45.0","type":"","filePath":"N/A"}],"warnings":["All --json output, including on error, is moving to stdout. Use the SFDX_JSON_TO_STDOUT environment variable to move over to the new functionality. This will become the default in version 45."]} 19:30:40.979 sfdx force:source:deploy --json --loglevel fatal --sourcepath /Users/tyler/code/salesforce/HelloWorld/force-app/main/default/lwc ended with exit code 1

Has anyone else been able to successfully deploy a lwc to an org with an api version that is not 45?

Answer 1

Short answer , you will need pre-release org and API version 45 atleast.

1. Sign up here for the pre-release org https://www.salesforce.com/form/signup/prerelease-spring19/

2. You will need pre-release CLI plugin to scaffold the bundle .Install the SFDX CLI (https://developer.salesforce.com/tools/sfdxcli) and then install pre release DX plugin sfdx plugins:install salesforcedx@pre-release.

3. Install the VScode extension pack for salesforce https://marketplace.visualstudio.com/items?itemName=salesforce.salesforcedx-vscode to get syntax autocomplete , deploy and other language features .