tessl/npm-symbol-tree

Efficient tree and linked list data structure using ES6 Symbols for DOM tree backing

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Overview

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Tree Construction

Name: tessl/npm-symbol-tree
Author: tessl

Object initialization and SymbolTree instance creation for optimal performance.

Capabilities

SymbolTree Constructor

Creates a new SymbolTree instance with an optional description for the internal Symbol.

/**
 * Create a new SymbolTree instance
 * @param {string} [description='SymbolTree data'] - Description used for the internal Symbol
 */
class SymbolTree {
  constructor(description?: string);
}

Usage Examples:

const SymbolTree = require("symbol-tree");

// Create with default description
const tree = new SymbolTree();

// Create with custom description for debugging
const domTree = new SymbolTree("DOM tree data");

Object Initialization

Initialize an object right after creation to take advantage of V8's fast properties and enable object freezing.

/**
 * Initialize an object for tree operations (optional performance optimization)
 * Time Complexity: O(1)
 * @param {Object} object - Object to initialize
 * @returns {Object} The same object that was passed in
 */
initialize(object: Object): Object;

Usage Examples:

const tree = new SymbolTree();

// Basic initialization
const node = tree.initialize({ id: "node1", data: "value" });

// Initialize before freezing (common pattern)
const frozenNode = Object.freeze(
  tree.initialize({ id: "node2", readonly: true })
);

// Initialize immediately after creation
class DOMNode {
  constructor(tagName) {
    this.tagName = tagName;
    tree.initialize(this); // Optimize for tree operations
  }
}

Performance Notes:

Calling initialize() is optional but recommended for objects that will be heavily used in tree operations
Helps V8 optimize property access patterns
Particularly useful when you plan to freeze objects after tree setup
Has no effect on tree functionality, only on performance characteristics

Install with Tessl CLI