YAML Rainbow

YAML Rainbow makes deeply nested YAML easier to read by coloring keys by hierarchy depth and showing your current path.

This extension is a visual reading aid for YAML. It does not modify files, format YAML, reorder keys, validate schemas, or report diagnostics.

Features

Colors YAML keys by hierarchy depth.
Outlines the key under your cursor and each parent key in its path.
Shows the current YAML path in the VSCode status bar.
Automatically disables scanning for large files.
Uses a tolerant line-based scanner for YAML files that contain template-like syntax.

Screenshot placeholder for the MVP.

Setting	Default	Description
`yamlRainbow.enabled`	`true`	Enable YAML Rainbow visual enhancements.
`yamlRainbow.keyColors`	`["#7aa2f7", "#bb9af7", "#7dcfff", "#9ece6a", "#e0af68", "#f7768e"]`	Colors used for YAML keys by hierarchy depth.
`yamlRainbow.activePathColor`	`#ffcc66`	Color used for active YAML path key outlines.
`yamlRainbow.activePathBackground`	`rgba(255, 204, 102, 0.12)`	Background color for the currently selected YAML path key.
`yamlRainbow.showStatusBarPath`	`true`	Show current YAML path in the VSCode status bar.
`yamlRainbow.maxFileLines`	`3000`	Disable YAML Rainbow automatically for files larger than this number of lines.
`yamlRainbow.maxDepth`	`8`	Compatibility setting. Key colors now cycle indefinitely by hierarchy depth.
`yamlRainbow.indentSize`	`2`	YAML indentation size used for hierarchy depth calculation.
`yamlRainbow.debounceMs`	`120`	Debounce delay for re-scanning documents after edits.

Array index paths are simplified in the MVP. For example, containers.image may be shown instead of containers[0].image.
YAML Rainbow is not a YAML validator.
YAML Rainbow is not a formatter.
Complex flow-style YAML support is intentionally limited.

Install dependencies:

npm install

Run checks:

npm run compile
npm test

Run the extension in VSCode: