feng19
Elixir Data Viewer
A read-only web viewer for Elixir data structures with syntax highlighting, code folding, line numbers, and a Tokyo Night theme.
Built with vanilla TypeScript + DOM — no CodeMirror, no React — powered by lezer-elixir for accurate parsing.
Features
-
Syntax Highlighting — Accurate Elixir syntax coloring via
lezer-elixirparser, matching Tokyo Night theme -
Code Folding — Collapse/expand maps, lists, tuples, keyword lists, bitstrings, and multi-line strings
-
Line Numbers — Gutter with line numbers and fold indicators
-
Floating Toolbar — Per-viewer toolbar (appears on hover) with:
-
⊟ Fold All
-
⊞ Unfold All
-
Word Wrap toggle -
⎘ Copy to clipboard
-
⧩ Filter by key
-
-
Key Filtering — Hide specific key-value pairs by key name (e.g. filter out
socket,secret_key_base) -
Multiple Viewers — Support multiple independent viewer instances on the same page
-
Configurable Toolbar — Show/hide individual toolbar buttons via options or HTML
data-*attributes -
Word Wrap — Toggle word wrap for long lines
-
Zero Dependencies — Only peer dependencies on
lezer-elixirand@lezer/common/@lezer/highlight
Visit the website directly and try out the online demo.
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dimitarvp
Sounds nice – could you add some screenshots to the README, please?
feng19
Thank you. I suggest you visit the website directly and try out the online demo.
c4lliope
@feng19 - this looks really nice, and perhaps is something that could be used inside LiveView - have you thought about releasing a
kinopackage to use this as a plugin?feng19
Yes, that’s a great idea. I’ll try to implement it later.
feng19
done
a-maze-d
Nice!
Side note: On your webpage you have a typo when linking to x_trace (you geta
404from github)You link to:
https://github.com/feng19/xtrace
instead of
https://github.com/feng19/x_trace
feng19
Fixed, Thanks.