Salesforce Apex Language Server (Typescript) installs statistics

Salesforce Apex Language Server Extension

A Visual Studio Code extension providing comprehensive Apex language support powered by a modern TypeScript-based language server.

Features

Core Language Support

• Syntax Highlighting: Full Apex, SOQL, and Anonymous Apex syntax highlighting
• Real-time Diagnostics: Instant error detection and validation as you type
• Code Intelligence: Hover information, go-to-definition, find references, and more
• Document Symbols: Quick navigation through class members and methods
• Code Lens: Inline actionable insights for test methods and class references
• Folding Ranges: Smart code folding based on structure and comments
• Auto-completion: Context-aware code completion (development mode)

Advanced Features

• Missing Artifact Resolution: Automatically finds and loads referenced types when needed
• Workspace Loading: Batch loading of Apex files for comprehensive cross-file analysis
• Queue-Based Processing: Priority-based request handling for responsive editing
• Performance Profiling: Built-in CPU and heap profiling for performance analysis (desktop only)

Platform Support

• Desktop: Full Node.js-based language server
• Web: Browser-based language server for vscode.dev and github.dev

Installation

1. Install from the VS Code Marketplace or Extensions view
2. Open a workspace containing Apex files (.cls, .trigger, .apex)
3. The language server starts automatically

Configuration

All settings use the apex.* prefix. Configure in VS Code Settings (UI or JSON).

Quick Start: Recommended Settings

{
  "apex.environment.serverMode": "development",
  "apex.commentCollection.enableCommentCollection": true,
  "apex.performance.documentChangeDebounceMs": 300,
  "apex.logLevel": "info"
}

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Settings Reference

Server Mode

Control the language server's operational mode and feature set.

apex.environment.serverMode

Type: "production" | "development"
Default: "production"

Sets the server's operational mode:

• production: Optimized for performance with minimal features
  • Disabled: hover, completion resolve, will-save notifications
  • Full document sync for reliability
• development: Full feature set with enhanced diagnostics
  • Enabled: all features including hover and completion
  • Incremental document sync for better performance

Override: Set APEX_LS_MODE environment variable to force a specific mode.

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Comment Collection

Configure how comments are parsed and processed during compilation.

apex.commentCollection.enableCommentCollection

Type: boolean
Default: true

Master switch for comment collection. When disabled, no comments are collected.

apex.commentCollection.includeSingleLineComments

Type: boolean
Default: false

Include single-line (//) comments in addition to block comments (/* */).

apex.commentCollection.associateCommentsWithSymbols

Type: boolean
Default: true

Associate comments with nearby symbols for enhanced features like hover documentation.
⚠️ Performance Impact: May affect large files.

apex.commentCollection.enableForDocumentChanges

Type: boolean
Default: true

Enable comment collection when documents are modified.

apex.commentCollection.enableForDocumentOpen

Type: boolean
Default: true

Enable comment collection when documents are opened.

apex.commentCollection.enableForDocumentSymbols

Type: boolean
Default: false

Enable comment collection for document symbol requests.
⚠️ Performance Impact: May affect responsiveness.

apex.commentCollection.enableForFoldingRanges

Type: boolean
Default: true

Enable comment collection for folding range requests.
⚠️ Performance Impact: May affect responsiveness.

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Performance Settings

Optimize language server performance for your environment.

apex.performance.commentCollectionMaxFileSize

Type: number (bytes)
Default: 102400 (100KB)

Maximum file size for comment collection. Files larger than this skip comment collection.

apex.performance.useAsyncCommentProcessing

Type: boolean
Default: true

Use asynchronous comment processing to improve UI responsiveness.

apex.performance.documentChangeDebounceMs

Type: number (milliseconds)
Default: 300

Debounce delay for document change processing. Higher values reduce processing frequency.

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Logging Settings

Control logging verbosity and output.

apex.logLevel

Type: "error" | "warning" | "info" | "log" | "debug"
Default: "info"

Extension log level for the main extension process and all worker processes.

apex.worker.enablePerformanceLogs

Type: boolean
Default: false

Enable detailed performance logging for request processing.

apex.worker.logCategories

Type: string[]
Default: ["STARTUP", "LSP", "SYMBOLS", "COMPLETION", "DIAGNOSTICS"]
Options: "STARTUP", "LSP", "SYMBOLS", "COMPLETION", "DIAGNOSTICS", "PERFORMANCE"

Filter log output by category.

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Environment Settings

Configure runtime environment and profiling.

apex.environment.profilingMode

Type: "none" | "full" | "interactive"
Default: "none"
Desktop Only

Profiling mode for performance analysis:

• none: Profiling disabled
• full: Continuous profiling from startup (best for test suites)
• interactive: Manual start/stop via commands (best for specific events)

apex.environment.profilingType

Type: "cpu" | "heap" | "both"
Default: "cpu"
Desktop Only

Type of profiling data to collect when profiling is enabled.

apex.environment.profilingTag

Type: string
Default: ""
Desktop Only…