forked from circlefin/stablecoin-evm
-
Notifications
You must be signed in to change notification settings - Fork 0
/
utils.js
46 lines (42 loc) · 1.54 KB
/
utils.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
/**
* Copyright 2023 Circle Internet Group, Inc. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const _ = require("lodash");
const fs = require("fs");
const web3 = require("web3");
/**
* Helper function to read the blacklist file.
* @param {string} blacklistFilePath the filepath to the blacklist file.
* @returns {string[]} the list of addresses in the file.
*/
function readBlacklistFile(blacklistFilePath) {
if (!fs.existsSync(blacklistFilePath)) {
throw new Error(`'${blacklistFilePath}' does not exist!`);
}
let addresses = JSON.parse(fs.readFileSync(blacklistFilePath));
addresses = _.uniqBy(addresses, (a) => a.toLowerCase()); // Deduplicate any addresses in the file
// Validate that addresses' integrity
for (const address of addresses) {
if (!web3.utils.isAddress(address)) {
throw new Error(
`Address '${address}' in '${blacklistFilePath}' is not valid address!`
);
}
}
return addresses;
}
module.exports = { readBlacklistFile };