chaingate
Version:
A complete TypeScript library for connecting to and making transactions on different blockchains
58 lines • 1.77 kB
JavaScript
export function remove0x(s) {
return s.startsWith('0x') ? s.substring(2) : s;
}
export function isHex(s) {
s = remove0x(s);
return /\b(0x)?[0-9a-fA-F]+\b/.test(s);
}
export function hexToBytes(hex) {
if (!isHex(hex))
throw new Error('Invalid hexadecimal value');
const hexWithout0x = remove0x(hex);
const length = hexWithout0x.length;
const bytes = new Uint8Array(length / 2);
for (let i = 0; i < length; i += 2) {
bytes[i / 2] = parseInt(hexWithout0x.substring(i, i + 2), 16);
}
return bytes;
}
export function bytesToHex(bytes, use0x) {
return ((use0x ? '0x' : '') +
Array.from(bytes)
.map((b) => b.toString(16).padStart(2, '0'))
.join(''));
}
export function generateSecureRandomBytes(length) {
const randomBytes = new Uint8Array(length);
crypto.getRandomValues(randomBytes);
return randomBytes;
}
export function buildUrlWithApiKey(baseUrl, apiKey) {
const url = new URL(baseUrl);
if (apiKey)
url.searchParams.append('apiKey', apiKey);
return url.toString();
}
export function isBase58(base58) {
return /^[A-HJ-NP-Za-km-z1-9]+$/.test(base58);
}
export function recordToMap(record) {
// Convert record to an array of [key, value] pairs, then pass to new Map
return new Map(Object.entries(record));
}
export function mapToRecord(map) {
const record = {};
for (const [key, value] of map) {
record[key] = value;
}
return record;
}
export function transformMap(originalMap, transformFn) {
const newMap = new Map();
// `Map.forEach` provides (value, key)
originalMap.forEach((value, key) => {
newMap.set(key, transformFn(value, key));
});
return newMap;
}
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