@iabtechlabtcf/core/lib/mjs/encoder/field/IntEncoder.js

Ensures consistent encoding and decoding of TC Signals for the iab. Transparency and Consent Framework (TCF).

import { EncodingError, DecodingError, } from '../../errors/index.js';
export class IntEncoder {
    static encode(value, numBits) {
        let bitString;
        if (typeof value === 'string') {
            value = parseInt(value, 10);
        }
        bitString = value.toString(2);
        if (bitString.length > numBits || value < 0) {
            throw new EncodingError(`${value} too large to encode into ${numBits}`);
        }
        // Pad the string if not filling all bits
        if (bitString.length < numBits) {
            // pad left
            bitString = '0'.repeat(numBits - bitString.length) + bitString;
        }
        return bitString;
    }
    static decode(value, numBits) {
        if (numBits !== value.length) {
            throw new DecodingError('invalid bit length');
        }
        return parseInt(value, 2);
    }
}