fix: removed unnecessary dependency on web3-utils

package.json

@@ -25,16 +25,14 @@
         "js-yaml": "^3.13.1",
         "lodash": "^4.17.15",
         "node-fetch": "^2.6.0",
-        "tslib": "^1",
-        "web3-utils": "^1.2.4"
+        "tslib": "^1"
     },
     "devDependencies": {
         "@commitlint/cli": "^8.2.0",
         "@commitlint/config-conventional": "^8.2.0",
         "@semantic-release/changelog": "^3.0.6",
         "@semantic-release/git": "^7.0.18",
         "@types/bl": "^2.1.0",
-        "@types/bn.js": "^4.11.5",
         "@types/debug": "^4.1.5",
         "@types/fs-extra": "^8.0.1",
         "@types/jest": "^24.0.23",

src/abi/files.ts

@@ -1,10 +1,9 @@
 import { readdir, readFile, stat, createReadStream } from 'fs-extra';
 import { basename, join as joinPath, resolve } from 'path';
-import { AbiItem } from 'web3-utils';
 import { AbiRepositoryConfig } from '../config';
 import { Address } from '../msgs';
 import { createModuleDebug, TRACE_ENABLED } from '../utils/debug';
-import { AbiItemDefinition } from './item';
+import { AbiItemDefinition, AbiItem } from './item';
 import { computeContractFingerprint } from './contract';
 import { computeSignature } from './signature';
 import { createGunzip } from 'zlib';

src/abi/item.ts

@@ -1,4 +1,30 @@
-import { AbiInput } from 'web3-utils';
+export type AbiType = 'function' | 'constructor' | 'event' | 'fallback';
+export type StateMutabilityType = 'pure' | 'view' | 'nonpayable' | 'payable';
+
+export interface AbiItem {
+    anonymous?: boolean;
+    constant?: boolean;
+    inputs?: AbiInput[];
+    name?: string;
+    outputs?: AbiOutput[];
+    payable?: boolean;
+    stateMutability?: StateMutabilityType;
+    type: AbiType;
+}
+
+export interface AbiInput {
+    name: string;
+    type: string;
+    indexed?: boolean;
+    components?: AbiInput[];
+}
+
+export interface AbiOutput {
+    name: string;
+    type: string;
+    components?: AbiOutput[];
+    internalType?: string;
+}
 
 /**
  * A single ABI definition of a function or a log event, with additional

src/abi/signature.ts

@@ -1,7 +1,6 @@
-import { AbiInput } from 'web3-utils';
 import { isValidAbiType } from './datatypes';
-import { AbiItemDefinition } from './item';
-import { parseFunctionSignature, parseEventSignature, sha3 } from './wasm';
+import { AbiInput, AbiItemDefinition } from './item';
+import { parseEventSignature, parseFunctionSignature, sha3 } from './wasm';
 
 const err = (msg: string): never => {
     throw new Error(msg);

src/abi/wasm.ts

@@ -1,4 +1,3 @@
-import { AbiItem } from 'web3-utils';
 import {
     abi_decode_parameters,
     get_data_size,
@@ -13,6 +12,7 @@ import {
 import { memory } from '../../wasm/ethabi/pkg/ethlogger_ethabi_bg';
 import { createModuleDebug } from '../utils/debug';
 import { AbiType } from './datatypes';
+import { AbiItem } from './item';
 
 const { trace } = createModuleDebug('abi:decode');
 

src/eth/requests.ts

@@ -1,5 +1,4 @@
-import { numberToHex } from 'web3-utils';
-import { bigIntToNumber } from '../utils/bn';
+import { bigIntToNumber, numberToHex } from '../utils/bn';
 import { JsonRpcResponse } from './jsonrpc';
 import {
     GethMemStats,
@@ -13,8 +12,8 @@ import {
     ParityPendingTransaction,
     RawBlockResponse,
     RawTransactionReceipt,
-    SyncStatus,
     RawTransactionResponse,
+    SyncStatus,
 } from './responses';
 
 export interface EthRequest<P extends any[], R> {

src/utils/bn.ts

@@ -1,5 +1,6 @@
 const MAX_NUMBER = BigInt(Number.MAX_SAFE_INTEGER);
 const MIN_NUMBER = BigInt(Number.MIN_SAFE_INTEGER);
+const ZERO = BigInt(0);
 
 /**
  * Parses the given input using JS's native BigInt and returns a number or a string depending on the size of the number.
@@ -26,3 +27,12 @@ export function bigIntToNumber(input: number | string | BigInt): number {
     }
     return parseInt(n.toString(10), 10);
 }
+
+/**
+ * Returns hex representation of the given number if "0x" prefix
+ */
+export function numberToHex(input: number | string | BigInt): string {
+    const n = BigInt(input);
+    const hex = n.toString(16);
+    return n < ZERO ? `-0x${hex.slice(1)}` : `0x${hex}`;
+}