$ show adrai/flowchart.js
flowchart.js is a JavaScript library for rendering SVG flowcharts from a text-based DSL. It parses user-defined flowchart syntax into a chart object, positions symbols with collision avoidance, and draws connectors using Raphael.js for cross-browser SVG abstraction. The library supports standard flowchart symbols (start, end, operation, input/output, subroutine, condition, parallel) with flowstate styling (past/current/future), custom link annotations, and click handlers. Architecture-wise, it follows a modular UMD pattern: index.js serves as the entry point exporting FlowChart.parse, while src/ contains separate modules for parsing (flowchart.parse.js), chart management (flowchart.chart.js), symbol base class (flowchart.symbol.js), symbol-type implementations, drawing utilities (flowchart.functions.js), helpers (flowchart.helpers.js), and defaults (flowchart.defaults.js). A jQuery plugin (jquery-plugin.js) enables DOM integration. The code demonstrates clean separation of concerns but relies on the outdated Raphael 2.3.0 dependency and uses a legacy Webpack 1.x build system, indicating moderate technical drift.
The LLM identified 2 files worth highlighting for reuse:
Provides _inherits for prototype inheritance and _defaults for deep merging of options. These isolated utilities have zero internal dependencies, demonstrate non-obvious skill in handling JavaScript prototypal inheritance and configurable defaults, and can be extracted for reuse in any project.
Contains drawPath, drawLine, and checkLineIntersection functions for SVG path rendering and collision detection. These self-contained utilities depend only on a Raphael paper object, encapsulate complex geometric calculations, and can be reused in other SVG-based applications with minimal adaptation.