add hw2

node_modules/uuid/dist/cjs-browser/v1.js

@@ -0,0 +1,87 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.updateV1State = void 0;
+const rng_js_1 = require("./rng.js");
+const stringify_js_1 = require("./stringify.js");
+const _state = {};
+function v1(options, buf, offset) {
+    let bytes;
+    const isV6 = options?._v6 ?? false;
+    if (options) {
+        const optionsKeys = Object.keys(options);
+        if (optionsKeys.length === 1 && optionsKeys[0] === '_v6') {
+            options = undefined;
+        }
+    }
+    if (options) {
+        bytes = v1Bytes(options.random ?? options.rng?.() ?? (0, rng_js_1.default)(), options.msecs, options.nsecs, options.clockseq, options.node, buf, offset);
+    }
+    else {
+        const now = Date.now();
+        const rnds = (0, rng_js_1.default)();
+        updateV1State(_state, now, rnds);
+        bytes = v1Bytes(rnds, _state.msecs, _state.nsecs, isV6 ? undefined : _state.clockseq, isV6 ? undefined : _state.node, buf, offset);
+    }
+    return buf ?? (0, stringify_js_1.unsafeStringify)(bytes);
+}
+function updateV1State(state, now, rnds) {
+    state.msecs ??= -Infinity;
+    state.nsecs ??= 0;
+    if (now === state.msecs) {
+        state.nsecs++;
+        if (state.nsecs >= 10000) {
+            state.node = undefined;
+            state.nsecs = 0;
+        }
+    }
+    else if (now > state.msecs) {
+        state.nsecs = 0;
+    }
+    else if (now < state.msecs) {
+        state.node = undefined;
+    }
+    if (!state.node) {
+        state.node = rnds.slice(10, 16);
+        state.node[0] |= 0x01;
+        state.clockseq = ((rnds[8] << 8) | rnds[9]) & 0x3fff;
+    }
+    state.msecs = now;
+    return state;
+}
+exports.updateV1State = updateV1State;
+function v1Bytes(rnds, msecs, nsecs, clockseq, node, buf, offset = 0) {
+    if (rnds.length < 16) {
+        throw new Error('Random bytes length must be >= 16');
+    }
+    if (!buf) {
+        buf = new Uint8Array(16);
+        offset = 0;
+    }
+    else {
+        if (offset < 0 || offset + 16 > buf.length) {
+            throw new RangeError(`UUID byte range ${offset}:${offset + 15} is out of buffer bounds`);
+        }
+    }
+    msecs ??= Date.now();
+    nsecs ??= 0;
+    clockseq ??= ((rnds[8] << 8) | rnds[9]) & 0x3fff;
+    node ??= rnds.slice(10, 16);
+    msecs += 12219292800000;
+    const tl = ((msecs & 0xfffffff) * 10000 + nsecs) % 0x100000000;
+    buf[offset++] = (tl >>> 24) & 0xff;
+    buf[offset++] = (tl >>> 16) & 0xff;
+    buf[offset++] = (tl >>> 8) & 0xff;
+    buf[offset++] = tl & 0xff;
+    const tmh = ((msecs / 0x100000000) * 10000) & 0xfffffff;
+    buf[offset++] = (tmh >>> 8) & 0xff;
+    buf[offset++] = tmh & 0xff;
+    buf[offset++] = ((tmh >>> 24) & 0xf) | 0x10;
+    buf[offset++] = (tmh >>> 16) & 0xff;
+    buf[offset++] = (clockseq >>> 8) | 0x80;
+    buf[offset++] = clockseq & 0xff;
+    for (let n = 0; n < 6; ++n) {
+        buf[offset++] = node[n];
+    }
+    return buf;
+}
+exports.default = v1;