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paseo/docs/FILE_ICONS.md
Mohamed Boudra 5b22aedaff feat(app): polish file explorer tree with material icons and visual refinements 
Replace lucide file icons with colored SVGs from material-icon-theme covering
53 language/filetype-specific icons. Add chevron expand indicators for
directories, indent guide lines, rounded rows, and restyle the header toolbar
to match the git diff pane pattern.
2026-03-30 17:05:14 +07:00

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File Icons

The file explorer uses colored SVG icons from material-icon-theme (installed as a dev dependency in packages/app).

Icons are inlined as SVG strings in:

packages/app/src/components/material-file-icons.ts

This file is auto-generated. Do not edit it by hand.

How it works

  • SVG_ICONS maps icon names (e.g. "typescript") to raw SVG strings
  • EXTENSION_TO_ICON maps file extensions (e.g. "ts") to icon names
  • getFileIconSvg(fileName) returns the SVG string for a given filename, falling back to a generic file icon

Adding a new icon

  1. Find the icon name in the material-icon-theme manifest:
node -e "
const m = require('./node_modules/material-icon-theme/dist/material-icons.json');
console.log('fileExtensions:', m.fileExtensions['YOUR_EXT']);
console.log('languageIds:', m.languageIds['YOUR_LANG']);
"
  1. Verify the SVG exists:
cat node_modules/material-icon-theme/icons/ICON_NAME.svg

  1. Add two things to material-file-icons.ts:

    • The SVG string in SVG_ICONS:

      "icon_name": `<svg ...>...</svg>`,

    • The extension mapping in EXTENSION_TO_ICON:

      "ext": "icon_name",

  2. Run npm run typecheck to verify.

Currently included icons

53 unique icons covering these extensions:

Extension(s) Icon
ts typescript
tsx react_ts
js javascript
jsx react
py python
go go
rs rust
rb ruby
java java
kt kotlin
c c
cpp cpp
h h
hpp hpp
cs csharp
swift swift
dart dart
ex, exs elixir
erl erlang
hs haskell
clj clojure
scala scala
ml ocaml
r r
lua lua
zig zig
nix nix
php php
html html
css css
scss sass
less less
json json
yml, yaml yaml
xml xml
toml toml
md, markdown markdown
sql database
graphql, gql graphql
sh, bash console
tf terraform
hcl hcl
vue vue
svelte svelte
astro astro
wasm webassembly
svg svg
png, jpg, jpeg, gif, webp, ico image
txt document
conf, cfg, ini settings
lock lock
groovy groovy
gradle gradle