src/treenode.js
function baseState(node, property, val) {
    const currentVal = node.itree.state[property];

    if (typeof val !== 'undefined' && currentVal !== val) {
        // Update values
        node.itree.state[property] = val;

        if (property !== 'rendered') {
            node.markDirty();
        }

        // Emit an event
        node._tree.emit('node.state.changed', node, property, currentVal, val);
    }

    return currentVal;
}
function baseState(node, property, val) {
    const currentVal = node.itree.state[property];

    if (typeof val !== 'undefined' && currentVal !== val) {
        // Update values
        node.itree.state[property] = val;

        if (property !== 'rendered') {
            node.markDirty();
        }

        // Emit an event
        node._tree.emit('node.state.changed', node, property, currentVal, val);
    }

    return currentVal;
}
function baseState ( node , property , val ) { const currentVal = node . itree . state [ property ] ; if ( typeof val !== 'undefined' && currentVal !== val ) { // Update values node . itree . state [ property ] = val ; if ( property !== 'rendered' ) { node . markDirty ( ) ; } // Emit an event node . _tree . emit ( 'node.state.changed' , node , property , currentVal , val ) ; } return currentVal ; }
Get or set a state value.

This is a base method and will not invoke related changes, for example
setting selected=false will not trigger any deselection logic.

@private
@param {TreeNode} node Tree node.
@param {string} property Property name.
@param {boolean} val New value, if setting.
@return {boolean} Current value on read, old value on set.
Get or set a state value .