Construct Merkle Trees and verify proofs. 

miguelmota

merkletreejs

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var __importDefault = (this && this.__importDefault) || function (mod) {

    return (mod && mod.__esModule) ? mod : { "default": mod };

Object.defineProperty(exports, "__esModule", { value: true });

const buffer_reverse_1 = __importDefault(require("buffer-reverse"));

const sha256_1 = __importDefault(require("crypto-js/sha256"));

const treeify_1 = __importDefault(require("treeify"));

const Base_1 = __importDefault(require("./Base"));

class MerkleTree extends Base_1.default {

     * All nodes and leaves are stored as Buffers.

     * Lonely leaf nodes are promoted to the next level up without being hashed again.

     * @param {Buffer[]} leaves - Array of hashed leaves. Each leaf must be a Buffer.

     * @param {Function} hashFunction - Hash function to use for hashing leaves and nodes

     * @param {Object} options - Additional options

     *const MerkleTree = require('merkletreejs')

     *  return crypto.createHash('sha256').update(data).digest()

     *const leaves = ['a', 'b', 'c'].map(value => keccak(value))

     *const tree = new MerkleTree(leaves, sha256)

    constructor(leaves, hashFn = sha256_1.default, options = {}) {

        this.concatenator = buffer_1.Buffer.concat;

                throw new Error('option "complete" is incompatible with "isBitcoinTree"');

                throw new Error('option "complete" is incompatible with "duplicateOdd"');

        this.isBitcoinTree = !!options.isBitcoinTree;

        this.hashLeaves = !!options.hashLeaves;

        this.sortLeaves = !!options.sortLeaves;

        this.sortPairs = !!options.sortPairs;

        this.complete = !!options.complete;

            if (typeof options.fillDefaultHash === 'function') {

                this.fillDefaultHash = options.fillDefaultHash;

            else if (buffer_1.Buffer.isBuffer(options.fillDefaultHash) || typeof options.fillDefaultHash === 'string') {

                this.fillDefaultHash = (idx, hashFn) => options.fillDefaultHash;

                throw new Error('method "fillDefaultHash" must be a function, Buffer, or string');

        this.duplicateOdd = !!options.duplicateOdd;

            this.concatenator = options.concatenator;

        this.hashFn = this.bufferifyFn(hashFn);

            isBitcoinTree: this.isBitcoinTree,

            fillDefaultHash: (_b = (_a = this.fillDefaultHash) === null || _a === void 0 ? void 0 : _a.toString()) !== null && _b !== void 0 ? _b : null,

            duplicateOdd: this.duplicateOdd

        hashes = hashes.filter(x => x.byteLength > 0);

        return this.concatenator(hashes);

  "description": "Construct Merkle Trees and verify proofs",

    "build": "npm run clean && tsc && npm run build:browser",

    "build:browser": "browserify -t [ babelify --presets [ @babel/preset-env ] ] dist/index.js | uglifyjs > merkletree.js",

    "lint": "standardx --fix src/*.ts test/*.js",

    "lint:example": "standardx --fix example/*.js",

    "docs": "rimraf docs/ && typedoc --plugin typedoc-plugin-markdown --hideSources --theme markdown --hideGenerator --excludeExternals --excludePrivate --out docs src/",

    "prepare": "npm run lint && npm run build && npm run build:browser && npm run docs"

    "url": "https://github.com/miguelmota/merkletreejs"

    "url": "https://github.com/miguelmota/merkletreejs/blob/master/LICENSE"

    "url": "https://github.com/miguelmota/merkletreejs/issues"

  "homepage": "https://github.com/miguelmota/merkletreejs",

    "@typescript-eslint/eslint-plugin": "^3.0.2",

    "@typescript-eslint/parser": "^3.0.2",

      "@typescript-eslint/no-unused-vars": "error"

    "parser": "@typescript-eslint/parser",

		@@ -1285,3 +1285,2 @@ "use strict";
		combineHashes(hashes) {
		hashes = hashes.filter(x => x.byteLength > 0);
		return this.concatenator(hashes);
		@@ -1288,0 +1287,0 @@ }

		{
		"name": "merkletreejs",
		"version": "0.3.5",
		"version": "0.3.6",
		"description": "Construct Merkle Trees and verify proofs",
		@@ -5,0 +5,0 @@ "main": "dist/index.js",

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