Update trie to v3.0.0, use v3 for StatelessRunner

Author: s1na

package.json

@@ -18,6 +18,7 @@
     "testStateByzantium": "npm run build:dist && node ./tests/tester -s --fork='Byzantium' --dist",
     "testStateConstantinople": "npm run build:dist && node ./tests/tester -s --fork='Constantinople' --dist",
     "testStatePetersburg": "npm run build:dist && node ./tests/tester -s --fork='Petersburg' --dist",
+    "testStateless": "npm run build:dist && node ./tests/tester --stateless --fork='Petersburg' --dist",
     "testBuildIntegrity": "npm run build:dist && node ./tests/tester -s --dist --test='stackOverflow'",
     "testBlockchain": "npm run build:dist && node --stack-size=1500 ./tests/tester -b --fork='Petersburg' --dist --excludeDir='GeneralStateTests'",
     "testBlockchainGeneralStateTests": "npm run build:dist && node --stack-size=1500 ./tests/tester -b --dist --dir='GeneralStateTests'",
@@ -58,7 +59,7 @@
     "ethereumjs-util": "^6.1.0",
     "fake-merkle-patricia-tree": "^1.0.1",
     "functional-red-black-tree": "^1.0.1",
-    "merkle-patricia-tree": "^2.3.2",
+    "merkle-patricia-tree": "^3.0.0",
     "rustbn.js": "~0.2.0",
     "safe-buffer": "^5.1.1",
     "util.promisify": "^1.0.0"

tests/StatelessRunner.js

@@ -44,7 +44,7 @@ async function runTestCase (options, testData, t) {
   // Determine set of all node hashes in the database
   // before running the tx.
   const existingKeys = new Set()
-  const it = stateManager._trie.db._leveldb.iterator()
+  const it = stateManager._trie.db.iterator()
   const next = promisify(it.next.bind(it))
   while (true) {
     const key = await next()
@@ -56,8 +56,8 @@ async function runTestCase (options, testData, t) {
   // to a bag of proof nodes, under the condition that this node existed
   // before execution.
   const proofNodes = new Map()
-  const getFunc = stateManager._trie.db._leveldb.get.bind(stateManager._trie.db._leveldb)
-  stateManager._trie.db._leveldb.get = (key, opts, cb) => {
+  const getFunc = stateManager._trie.db.get.bind(stateManager._trie.db)
+  stateManager._trie.db.get = (key, opts, cb) => {
     getFunc(key, opts, (err, v) => {
       if (!err && v) {
         if (existingKeys.has(key.toString('hex'))) {