@sv-kit/workerify/dist/transfer.js

Headless Web Worker RPC: wrap(url), workerify(fn), expose(api). Abort, transferables, and typed proxies.

// packages/workerify/src/transfer.ts
const TRANSFERABLE_TAG = new Set([
    "ArrayBuffer",
    "MessagePort",
    "ImageBitmap",
    "OffscreenCanvas",
    "RTCDataChannel",
    "AudioData", // 浏览器支持时
    "VideoFrame" // 浏览器支持时
]);
export function isTransferable(x) {
    if (!x)
        return false;
    if (typeof ArrayBuffer !== "undefined" && x instanceof ArrayBuffer)
        return true;
    if (typeof MessagePort !== "undefined" && x instanceof MessagePort)
        return true;
    if (typeof ImageBitmap !== "undefined" && x instanceof ImageBitmap)
        return true;
    if (typeof OffscreenCanvas !== "undefined" && x instanceof OffscreenCanvas)
        return true;
    const tag = Object.prototype.toString.call(x).slice(8, -1);
    return TRANSFERABLE_TAG.has(tag);
}
/** 递归收集 Transferable（数组/对象深度遍历，避免循环） */
export function collectTransferables(x, maxDepth = 3) {
    const out = [];
    const seen = new WeakSet();
    function walk(v, d) {
        if (!v || d > maxDepth)
            return;
        if (isTransferable(v)) {
            out.push(v);
            return;
        }
        if (typeof v !== "object")
            return;
        if (seen.has(v))
            return;
        seen.add(v);
        if (Array.isArray(v)) {
            for (const it of v)
                walk(it, d + 1);
        }
        else {
            for (const k of Object.keys(v))
                walk(v[k], d + 1);
        }
    }
    walk(x, 0);
    return out;
}
export function toPlainError(err) {
    try {
        const e = err ?? {};
        return {
            name: String(e.name ?? "Error"),
            message: String(e.message ?? ""),
            stack: typeof e.stack === "string" ? e.stack : undefined,
            cause: e.cause
        };
    }
    catch {
        return { name: "Error", message: String(err) };
    }
}