Modern JS Tree Viewer

No depedency, javascript tree viewer that shows you basic data types, Object, Array, Map, and Set. I built this to be able to explore Maps and Sets that I use as state stores which are typically not supported by most state managers. See example for basic usage.

This library does not yet work with Functions, or DOM elements. If you keep it to the basic JSON data types + Map and Set, you should be OK.

• Getting Started
• Usage
  • treeView.toggle()
  • treeView.expandAll()
  • treeView.collapseAll()
  • treeView.update(Map|Set|Array|Object)
  • treeView.search(string|RegExp)
• Themes
  • Todos

Getting Started

npm i --save modern-js-tree

index.js

const ModernJsTree = require('modern-js-tree');

const treeView = ModernJsTree({
    value: { /** value to inspect */ },
    mountTo: '#myElement', // optional
    theme: 'my-custom-theme' // optional
});

Usage

treeView.toggle()

Open and close the tree view.

treeView.expandAll()

Expands all items in the tree

treeView.collapseAll()

Collapse all items in the tree

treeView.update(Map|Set|Array|Object)

Update the tree view with a new value.

treeView.search(string|RegExp)

Filter through the items in the tree and display only things that match what you're searching for.

Themes

Though the default theme will likely fit a light or dark container, you can customize the theme to your liking using the following css:

my-custom-theme.css

.tree-view.my-custom-theme {
  font-family: monospace;
  font-size: 16px;
  line-height: 16px;
}

.tree-view.my-custom-theme .tree-view {
  border-left: 1px solid rgba(255, 255, 255, 0.1);
}

.tree-view.my-custom-theme .container:focus {
  outline: 2px solid #424242;
}

.tree-view.my-custom-theme .spacer {
  height: 16px;
}

.tree-view.my-custom-theme .expand,

.tree-view.my-custom-theme .collapse {
  color: #969696;
}

.tree-view.my-custom-theme .expand:hover,

.tree-view.my-custom-theme .collapse:hover {
  background: rgba(255, 200, 200, 0.3);
}

.tree-view.my-custom-theme .name:hover, .tree-view.my-custom-theme .value:hover {
  background-color: rgba(0, 255, 255, 0.1);
}

.tree-view.my-custom-theme .name {
  color: #881391;
}

.tree-view.my-custom-theme .value.Boolean, .tree-view.my-custom-theme .value.Number {
  color: #1c00cf;
}

.tree-view.my-custom-theme .value.Object, .tree-view.my-custom-theme .value.Array, .tree-view.my-custom-theme .value.Map, .tree-view.my-custom-theme .value.Set {
  color: #424242;
}

.tree-view.my-custom-theme .value.undefined, .tree-view.my-custom-theme .value.null {
  color: #808080;
}

.tree-view.my-custom-theme .value.String, .tree-view.my-custom-theme .value.Date {
  color: #c41a16;
}

my-custom-theme.scss

$size: 16px;
$treeViewBorderLeft: 1px solid rgba(#fff, 0.1);
$itemBorderFocus: 2px solid #424242;
$actionColor: rgb(150, 150, 150);
$actionBgHover: rgba(255,200,200, 0.3);
$nameValueHover: rgba(aqua, 0.1);
$nameColor: rgb(136, 19, 145);
$boolNumColor: rgb(28, 0, 207);
$expandableColor: #424242;
$nullUndefinedColor: #808080;
$stringDateColor: #c41a16;

.tree-view.my-custom-theme {

    font-family: monospace;
    font-size: $size;
    line-height: $size;


    .tree-view {
        border-left: $treeViewBorderLeft;
    }

    .container:focus {
        outline: $itemBorderFocus;
    }


    .spacer {
        height: $size;
    }


    .expand,
    .collapse {

        color: $actionColor;

        &:hover {

            background: $actionBgHover;
        }
    }


    .name, .value {

        &:hover {
            background-color: $nameValueHover;
        }
    }

    .name { color: $nameColor; }

    .value {


        &.Boolean,
        &.Number {

            color: $boolNumColor;
        }

        &.Object,
        &.Array,
        &.Map,
        &.Set {
            color: $expandableColor;
        }

        &.undefined,
        &.null {

            color: $nullUndefinedColor;
        }

        &.String,
        &.Date {
            color: $stringDateColor;
        }
    }

}

Todos

• [ ] Write tests for current implementation
• [ ] Add support for functions and HTML elements
• [ ] Add support for misc classes
• [ ] Add ability to add, remove, rename, and change value of items in tree