codemirror/devArchived

Features

• Modular Extension Systems - Built as a minimal core with all features delivered through a highly flexible modular extension system.
• Browser-Based Editors - Provides a full-featured, browser-based code editor with syntax highlighting, multiple cursors, and customizable themes.
• Extension Systems - Implements a modular extension architecture that allows third-party modules to add specialized behavior to the editor core.
• Collaborative Editors - Enables real-time multi-user synchronization and collaborative editing using an operational transformation framework.
• Immutable State Containers - Implements an immutable data structure for the document and selection to ensure consistent state transitions.
• Language Server Protocol Clients - Integrates with language servers to provide IDE-like features such as autocompletion, diagnostics, and symbol navigation.
• Language Server Integrations - Integrates with the Language Server Protocol to provide advanced intelligence like symbol renaming and navigation.
• Language Server Protocol Integrations - Integrates with Language Server Protocol servers to provide advanced features like autocompletion, go-to-definition, and real-time diagnostics.
• Symbol Navigation - Allows users to jump directly to the declaration or reference of a symbol using language server lookups.
• Code Editors - Allows embedding a full-featured code editor with syntax highlighting and autocompletion directly into web pages.
• Context-Aware Suggestions - Displays context-aware coding suggestions as the user types to improve development speed.
• Abstract Syntax Tree Parsing - Generates structural parse trees to enable deep language features like indentation, folding, and highlighting.
• Atomic Transactional State Commits - Processes all document changes as discrete, immutable transactions to ensure a consistent state and reliable undo/redo.
• Immutable State Transactions - Updates document content through transactions that replace text ranges or merge changes to maintain an immutable state.
• Structural Analysis - Generates detailed parse trees for structural language analysis to enable deep integration of language-specific features.
• Operational Transformation - Implements operational transformation to resolve conflicts during real-time collaborative editing.
• Syntax Parsing Engines - Functions as a syntax tree parsing engine to enable structural language analysis and advanced editing features.
• Code Editor Components - Provides a complete code editor UI component featuring syntax highlighting, key bindings, and undo history.
• Editor Extension Frameworks - Offers a modular framework for building custom code editing features through a minimal core and an extensive plugin system.
• Real-Time Collaborative Editing - Provides a robust system for multiple users to edit the same document simultaneously with real-time synchronization.
• Syntax Highlighters - Applies visual syntax highlighting by coloring code tokens based on the programming language grammar.
• Editor Frameworks - Offers a modular framework and extension system for building highly customizable browser-based text editors.
• Collaborative Editing Frameworks - Provides a framework for implementing real-time multi-user text editing with synchronization and conflict resolution.
• Language Server Integrations - Maintains a persistent connection to language servers to synchronize document changes and receive diagnostics.
• Dynamic Configuration Compartments - Uses a compartment-based system to allow replacing and updating editor extensions at runtime via transactions.
• Text Search and Replace - Implements search and replace functionality using plain text or regular expressions.
• Auto-closing Brackets - Automatically inserts matching closing brackets, parentheses, and quotes during typing.
• Automated Code Formatters - Reformats the entire document based on language server rules to ensure consistent code styling.
• Basic Text Deletion - Removes the character before or after the cursor or deletes a whole word.
• Undo-Redo State History - Provides a sequence of state transitions to support reversing and reapplying document changes.
• Cursor Navigation - Provides mechanisms for navigating the editor cursor using keyboard shortcuts and arrow keys.
• General Editor Behavior Customizations - Provides a modular system to extend or replace keymaps and rendering pipelines to customize editor behavior.
• Automatic Signature Help Displays - Automatically displays function parameter hints and return types at the cursor position.
• In-Editor Linting - Displays real-time error and warning messages directly within the editor to highlight problematic code patterns.
• Indentation Adjustment - Adds or removes a unit of indentation from all selected lines.
• Indentation Rules - Computes and applies code indentation based on structural syntax tree properties.
• Command Key Bindings - Associates keyboard shortcuts with internal command functions across different platforms and modifier combinations.
• Line Deletion - Removes the lines containing the current selection from the document.
• Newline Insertion - Replaces the current selection with a newline character.
• Hover Information Displays - Shows detailed symbol types, signatures, and documentation in popups when hovering over code.
• Default Editor Bundles - Ships pre-configured bundles of common extensions like keymaps and line numbers to create a functional editor quickly.
• Snippet Insertions - Injects text templates with tab-stops to allow jumping between placeholders.
• Code Folding - Enables collapsing and expanding blocks of code to improve navigation and overview of large files.
• Smart Newline Indentation - Replaces the selection with a newline and automatically indents the new line based on context.
• State Facets - Combines multiple extension inputs into a single computed value for global editor settings.
• Symbol Renamers - Provides safe, project-wide identifier renaming by requesting updates from a language server.
• Runtime Extension Reconfiguration - Uses compartments to allow extensions to be updated or replaced at runtime without resetting the editor.
• Screen Reader Optimizations - Implements specialized focus and announcement management to ensure the editor is accessible via screen readers.
• Document Range Mapping - Updates document positions and ranges across changes to keep markers and selections synchronized.
• Editor Appearance Customization - Allows customization of the editor's visual environment through themes, color schemes, and font styles.
• Editor Tooltips - Positions floating DOM elements such as tooltips and panels near the cursor to provide contextual information.
• Web Accessibility Compliance - Implements inclusive web standards supporting screen readers, keyboard-only navigation, and bidirectional text.
• Search Panels - Provides a dedicated search panel for finding occurrences of text or regular expressions.
• Non-Destructive Text Decorations - Applies visual marks and inline widgets to text ranges without modifying the actual document content.
• Theme Management - Provides tools and utilities for managing, switching, and importing visual themes to change the editor's appearance.
• Editor Text Decorators - Applies visual marks and inline widgets to specific text ranges to provide contextual feedback.
• Multiple Cursors - Supports simultaneous editing across multiple non-contiguous text selections using multiple cursors.
• Rectangular Text Selections - Enables selection of text in rectangular block regions across multiple lines using modifier keys.
• Editor State Fields - Stores metadata in the editor state and defines precise update logic for that data during document transactions.
• Undo-Redo History - Provides a history of state changes to enable both local and collaborative undo and redo operations.

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