@ai2070/l0/dist/utils/uuid.js

L0: The Missing Reliability Substrate for AI

let externalV7;
try {
    const { v7 } = require("uuid");
    if (typeof v7 === "function")
        externalV7 = v7;
}
catch {
}
export function uuidv7() {
    if (externalV7) {
        return externalV7();
    }
    return internalV7();
}
const _state = {
    msecs: -Infinity,
    seq: 0,
};
function getRandomBytes(length) {
    const bytes = new Uint8Array(length);
    if (typeof crypto !== "undefined" && crypto.getRandomValues) {
        crypto.getRandomValues(bytes);
    }
    else {
        for (let i = 0; i < length; i++) {
            bytes[i] = Math.floor(Math.random() * 256);
        }
    }
    return bytes;
}
function updateV7State(state, now, rnds) {
    if (now > state.msecs) {
        state.seq =
            (rnds[6] << 24) | (rnds[7] << 16) | (rnds[8] << 8) | rnds[9];
        state.msecs = now;
    }
    else {
        state.seq = (state.seq + 1) | 0;
        if (state.seq === 0) {
            state.msecs++;
        }
    }
}
function bytesToUuid(bytes) {
    const hex = Array.from(bytes)
        .map((b) => b.toString(16).padStart(2, "0"))
        .join("");
    return `${hex.slice(0, 8)}-${hex.slice(8, 12)}-${hex.slice(12, 16)}-${hex.slice(16, 20)}-${hex.slice(20)}`;
}
export function internalV7() {
    const now = Date.now();
    const rnds = getRandomBytes(16);
    updateV7State(_state, now, rnds);
    const msecs = _state.msecs;
    const seq = _state.seq;
    const buf = new Uint8Array(16);
    let ts = msecs;
    buf[5] = ts & 0xff;
    ts = Math.floor(ts / 256);
    buf[4] = ts & 0xff;
    ts = Math.floor(ts / 256);
    buf[3] = ts & 0xff;
    ts = Math.floor(ts / 256);
    buf[2] = ts & 0xff;
    ts = Math.floor(ts / 256);
    buf[1] = ts & 0xff;
    ts = Math.floor(ts / 256);
    buf[0] = ts & 0xff;
    buf[6] = 0x70 | ((seq >>> 28) & 0x0f);
    buf[7] = (seq >>> 20) & 0xff;
    buf[8] = 0x80 | ((seq >>> 14) & 0x3f);
    buf[9] = (seq >>> 6) & 0xff;
    buf[10] = ((seq << 2) & 0xff) | (rnds[10] & 0x03);
    buf[11] = rnds[11];
    buf[12] = rnds[12];
    buf[13] = rnds[13];
    buf[14] = rnds[14];
    buf[15] = rnds[15];
    return bytesToUuid(buf);
}
export function _resetState() {
    _state.msecs = -Infinity;
    _state.seq = 0;
}
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