sparkline

sparkline is a JavaScript library that generates textual sparklines (small, intense, word-sized graphics) inspired by Holman's 'spark' utility. It takes an array of numerical data and outputs a compact string representation of a line graph, primarily for console or plain text display. The current stable version, 0.2.0, was last released on June 23, 2017. Given the lack of updates since then, its development is considered abandoned. It differentiates itself by producing character-based sparklines suitable for terminal output or simple HTML, in contrast to modern SVG/Canvas-based solutions, and predates the common adoption of ES Modules (ESM) and TypeScript in the JavaScript ecosystem.