asn1-ts/dist/utils/getBitFromBase128.mjs

ASN.1 encoding and decoding, including BER, CER, and DER.

export default function getBitFromBase128(from, bitIndex) {
    const byteIndex = (from.length - (Math.floor(bitIndex / 7) + 1));
    return ((from[byteIndex] & (0x01 << (bitIndex % 7))) > 0);
}