cesr/dist/array-utils.js

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export function concat(a, b) {
    if (a.length === 0) {
        return b;
    }
    if (b.length === 0) {
        return a;
    }
    const merged = new Uint8Array(a.length + b.length);
    merged.set(a);
    merged.set(b, a.length);
    return merged;
}
export function prepad(raw, length) {
    if (raw.byteLength === length) {
        return raw;
    }
    const padded = new Uint8Array(length + raw.byteLength);
    padded.set(raw, length);
    return padded;
}
export function toArray(num, length) {
    const bytes = new Uint8Array(length);
    for (let i = 0; i < length; i++) {
        bytes[length - i - 1] = num % 256;
        num = Math.floor(num / 256);
    }
    return bytes;
}