@slippi/slippi-js/dist/common/utils/bufferHelpers.cjs

Official Project Slippi Javascript SDK

'use strict';

function byteLength(data) {
    if (data instanceof ArrayBuffer) {
        return data.byteLength;
    }
    return data.byteLength; // ArrayBufferView (includes Buffer)
}
function asUint8Array(data) {
    if (data instanceof Uint8Array) {
        return data;
    }
    if (data instanceof ArrayBuffer) {
        return new Uint8Array(data);
    }
    return new Uint8Array(data.buffer, data.byteOffset, data.byteLength);
}
/**
 * Cross-platform copy, mirroring Buffer.copy's signature.
 * Returns the number of bytes copied.
 */
function bufferCopy(src, dst, targetStart = 0, sourceStart = 0, sourceEnd) {
    const s = asUint8Array(src);
    const d = asUint8Array(dst);
    const sLen = s.length;
    const ss = Math.max(0, Math.min(sourceStart, sLen));
    const se = sourceEnd == null ? sLen : Math.max(ss, Math.min(sourceEnd, sLen));
    const ts = Math.max(0, Math.min(targetStart, d.length));
    const toCopy = Math.min(se - ss, d.length - ts);
    if (toCopy <= 0) {
        return 0;
    }
    // Handles overlap correctly per TypedArray.set semantics
    d.set(s.subarray(ss, ss + toCopy), ts);
    return toCopy;
}
/** Cross-platform test for Buffer, ArrayBuffer, or typed array */
function isBufferLike(x) {
    return (x instanceof ArrayBuffer || ArrayBuffer.isView(x) // true for all TypedArrays and Node Buffers
    );
}

exports.asUint8Array = asUint8Array;
exports.bufferCopy = bufferCopy;
exports.byteLength = byteLength;
exports.isBufferLike = isBufferLike;