Salesforce DX Developer Guide

How Salesforce Developer Experience (DX) Tooling Changes the Way You Work
Provide Developers Access to Salesforce DX Tools
Project Setup
Authorization
Metadata Coverage
Scratch Orgs
Sandboxes
Track Changes Between Your Project and Org
Work with Data
Salesforce DX MCP Server and Tools
Development
Develop Against Any Org
Assign a Permission Set
Create Lightning Apps and Aura Components
Create Lightning Web Components
Create an Apex Class
Create an Apex Trigger
Create a Custom Object
Execute Anonymous Apex
Run Apex Tests
Debug Apex
Generate and View Apex Debug Logs
Build and Release Your App
Unlocked Packages
Continuous Integration
Troubleshoot Salesforce DX
Limitations for Salesforce DX
PDF

Note: This release is in preview. Features described here don’t become generally available until the latest general availability date that Salesforce announces for this release. Before then, and where features are noted as beta, pilot, or developer preview, we can’t guarantee general availability within any particular time frame or at all. Make your purchase decisions only on the basis of generally available products and features.

Generate and View Apex Debug Logs

Apex debug logs can record database operations, system processes, and errors that occur when executing a transaction or running unit tests in any authenticated org. Enable the Debug Log in Salesforce Extensions for VS Code, then view the logs with VS Code or Salesforce CLI.
  1. In Salesforce Extensions for VS Code, prepare the org to generate logs and configure the debugger.
    1. Log in to the org.
    2. For Replay Debugger, run SFDX: Turn on Apex Debug Log for Replay Debugger.
    3. Create a launch configuration file for Replay Debugger or Interactive Debugger.
  2. After you run the tests, get a list of the debug logs. 
    1sf apex list log --target-org myscratch
2
3APPLICATION DURATION (MS) ID       LOCATION  SIZE (B) LOG USER  OPERATION       REQUEST START TIME   STATUS
4─────────── ───────────── ───────  ───────── ──────── ───────── ─────────────── ─────── ───────────  ───────
5Unknown     1143          07L9Axx  SystemLog 23900    User User ApexTestHandler Api     2017-09-05x  Success
  3. View a debug log by passing its ID to the apex get log command. 
    1sf apex get log --log-id 07L9A000000aBYGUA2
2
338.0 APEX_CODE,FINEST;APEX_PROFILING,INFO;CALLOUT,INFO;DB,INFO;SYSTEM,DEBUG;VALIDATION,INFO;VISUALFORCE,INFO;WAVE,INFO;WORKFLOW,INFO
415:58:57.3 (3717091)|USER_INFO|[EXTERNAL]|0059A000000TwPM|test-ktjauhgzinnp@example.com|Pacific Standard Time|GMT-07:00
515:58:57.3 (3888677)|EXECUTION_STARTED
615:58:57.3 (3924515)|CODE_UNIT_STARTED|[EXTERNAL]|01p9A000000FmMN|RejectDuplicateFavoriteTest.acceptNonDuplicate()
715:58:57.3 (5372873)|HEAP_ALLOCATE|[72]|Bytes:3
8...