npm install syntax-tree``sh`
$ npm install --save syntax-tree
`js`
var SyntaxTree = require( 'syntax-tree' )
`js
// Create a new tree
var tree = new SyntaxTree()
// Create a new node
var childNode = new SyntaxTree.Node({
type: 'ArbitraryNode'
})
// Add nodes to the tree
tree.root.appendChild( childNode )
tree.root.prependChild( otherChildNode )
// Replace a node
someNode.replaceChild( oldChild, newChild )
// Insertions
someNode.insertBefore( newChild, existingChild )
someNode.insertAfter( newChild, existingChild )
// Removals
someNode.removeChild( child )
otherNode.remove()
// Siblings
someNode.nextSibling.appendChild( newChild )
someNode.previousSibling.appendChild( newChild )
// Children
someNode.firstChild // -> child|null
someNode.lastChild // -> child|null
// Relationships
someNode.isParent // -> true|false
someNode.isChild // -> true|false
`
`idl`
interface Node {
readonly attribute isRoot: boolean;
readonly attribute isParent: boolean;
readonly attribute isChild: boolean;
readonly attribute firstChild: Child | null;
readonly attribute lastChild: Child | null;
readonly attribute previousSibling: Node | null;
readonly attribute nextSibling: Node | null;
type: String;
parent: Node?;
children: [ Child ];
data: Data | null;
};
`idl`
interface Data {};
`idl``
interface Root <: Node {
type: "Root";
parent: Root;
};