web-mind-editor

web-mind-editor is designed with two objectives

• provide a full featured alternative to Freemind but with several improvements (see key features)
• learn/experiement/prove several technical concepts from computer science (see technical conecpts)

Since the Freemind file format *.mm is a quasi standard for mind mapping it heavily influences the data structures and features of web-mind-editor.

Key features

• compatibilty: import and export of Freemind *.mm files

Planned features

• editor: support for adding, deleting and modifying nodes and their relations
• full history: save every modification in persistent data structures, append only
• efficency: store thousands of nodes but load only the currently visible data
• versioning: direct access to any version in history
• collaboration: work with multiple users on the same document
• concurrency: resolve conflicts which occur by concurrent changes
• staging: changes need to be reviewed and accepted before a revision is created
• compare: show the differences between changes, commits, revisions or documents

Technical concepts

• architecture: Go backend, Javascript frontend, SQLite data storage
• data management: git-like versioning, persistent data structures, path copying
• schema and query management: goose migrations + sqlc for queries
• performance for Freemind import: streaming parsers, journal_mode=WAL
• collaboration: path copying, three way merge
• self contained application:
  • Go compiler links statically by default
  • Go embed for goose migrations and assets
• multi platform: cross compiling backend Go code and implement Vanilla Javacript frontend