v0.6.4

add support for generating QR codes with custom colors

v0.6.3

add support for generating QR codes as images or ASCII art

v0.6.2

implement more detailed error logging and reporting

v0.6.1

add more robust input validation for all chart types

v0.6.0 — Deep Viz

10 New Visualization Functions

• tree() — ASCII tree/hierarchy with 4 styles (ascii/rounded/bold/double)
• progressBar() — Multi-step CI/CD pipeline with 4 styles (line/dots/blocks/arrows)
• calendarHeatmap() — GitHub-style contribution grid from date-indexed entries
• brailleSpark() — Hi-res Braille Unicode sparkline (2x4 dot resolution)
• candlestick() — OHLC financial charts with bull/bear rendering
• timeline() — Gantt-style project scheduling charts
• boxDiagram() — Box-and-arrow flowcharts (horizontal/vertical, 4 border styles)
• multiSpark() — Multi-series aligned sparklines for metric comparison
• diffBar() — Diverging butterfly bar chart for before/after comparison
• matrix() — LED dot-matrix display with 3x5 font (blocks/dots/braille styles)

Stats

• 35+ functions, 195 tests, zero dependencies
• Live demo: https://che0md.tech/webhook-spark

v0.5.0 — Social Media Content Engine

What's New

Social media content generation and posting — turn your metrics into viral #BuildInPublic posts.

socialFormat() — Platform-Aware Formatting

• Auto-truncates to platform char limits: X (280), Bluesky (300), Mastodon (500), Threads (500), Instagram (2200), YouTube (5000)
• Smart word-boundary splitting, hashtag appending, custom truncation markers

thread() — Smart Thread Splitter

• Splits long text into numbered posts with paragraph → sentence → word fallback
• Header/footer support, per-platform limits

buildInPublic() — Metric-to-Post Generator

• Generates #BuildInPublic social posts from dashboard metrics
• Includes sparklines, trend arrows, kaomoji mood faces, and hashtags
• 5 kaomoji themes (classic, cats, bears, stars, minimal)
• Perfect for indie hacker / SaaS daily updates

socialCaption() — Multi-Section Caption Builder

• Build structured IG/YT captions with titled sections, emoji prefixes, CTA, and hashtags
• Auto-truncates to platform limit

postToBluesky() — AT Protocol Posting

• Post directly to Bluesky with just handle + app password
• No OAuth complexity, zero deps, pure HTTP

postToX() — X/Twitter API v2 Posting

• Full OAuth 1.0a HMAC-SHA1 signing using Node built-in crypto
• Zero external dependencies

Stats

• 31 new tests (94 total passing)
• +975 lines across 7 files (new: src/social.ts)
• Still zero dependencies

v0.4.0 — Kaomoji, Heatmaps, Tables, Histograms & Comparisons

What's New

5 features that make webhook-spark the most fun AND useful terminal/text visualization library on npm.

Kaomoji Mood System

• kaomoji(mood, options?) — 5 themes (classic, cats, bears, stars, minimal) x 13 moods
• kaomojiStatus(value, max) — map numeric values to mood faces via thresholds
• kaomojiAll() and kaomojiThemes() helpers
• Includes ᓚᘏᗢ (cats/happy) and ☆*:.｡.o(≧▽≦)o.｡.:*☆ (celebrating)

2D Heatmap

• heatmap(data, options?) — GitHub contribution graph style, pure text
• Row/column labels, custom shade characters, min/max override

Box-Drawing Tables

• miniTable(rows, options?) — 4 border styles (single, double, rounded, none)
• kvTable(entries) — quick key-value display
• Column alignment, header separators, maxWidth truncation

Histogram

• histogram(values, options?) — frequency distribution with configurable bins
• Show counts or percentages, custom fill character

Side-by-Side Compare

• compare(label1, val1, label2, val2, options?) — visual before/after
• 3 modes: bars, spark (with sparklines), compact (single line)
• Returns delta, percentage change, direction arrow

Stats

• 33 new tests (63 total passing)
• +977 lines across 6 files
• Still zero dependencies, TypeScript first

v0.3.0 — LCD, IoT & AI Agent Features

New Features

• gauge(value, max) — Progress/level gauge bar with custom fill chars, labels, and threshold alerts. Perfect for LCD battery displays, tank levels, task completion.
• stats(values) — Summary statistics (min/max/avg/median/stdDev/percentiles) with a compact .summary string. Feed it to an LLM or print on line 2 of a 16x2 LCD.
• sparkWithStatus(values, thresholds) — Threshold-aware sparkline returning ok/warning/critical status, emoji, and Discord embed color. Supports inverted mode (low = bad).
• dashboard(metrics) — Multi-metric compact display. Full mode with sparklines, or compact mode for 20x4 LCDs and AI agent context windows.

Target Audiences

• Homelab / DevOps (existing)
• LCD / OLED hackers (16x2, 20x4, SSD1306 128x64)
• DIY / IoT makers (sensor dashboards)
• AI agent builders (compact data viz in system prompts)

Stats

• 16 new tests (28 total passing)
• ~150 lines of new functionality
• Zero new dependencies

v0.1.0

Initial release — Send minimalist homelab alerts with ASCII sparklines to Discord/Slack.