viem/_esm/utils/data/concat.js

TypeScript Interface for Ethereum

export function concat(values) {
    if (typeof values[0] === 'string')
        return concatHex(values);
    return concatBytes(values);
}
export function concatBytes(values) {
    let length = 0;
    for (const arr of values) {
        length += arr.length;
    }
    const result = new Uint8Array(length);
    let offset = 0;
    for (const arr of values) {
        result.set(arr, offset);
        offset += arr.length;
    }
    return result;
}
export function concatHex(values) {
    return `0x${values.reduce((acc, x) => acc + x.replace('0x', ''), '')}`;
}
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