$

node_modules/webpack/lib/util/numberHash.js

@@ -0,0 +1,45 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const SAFE_LIMIT = 0x80000000;
+const SAFE_PART = SAFE_LIMIT - 1;
+const COUNT = 4;
+const arr = [0, 0, 0, 0, 0];
+const primes = [3, 7, 17, 19];
+
+module.exports = (str, range) => {
+	arr.fill(0);
+	for (let i = 0; i < str.length; i++) {
+		const c = str.charCodeAt(i);
+		for (let j = 0; j < COUNT; j++) {
+			const p = (j + COUNT - 1) % COUNT;
+			arr[j] = (arr[j] + c * primes[j] + arr[p]) & SAFE_PART;
+		}
+		for (let j = 0; j < COUNT; j++) {
+			const q = arr[j] % COUNT;
+			arr[j] = arr[j] ^ (arr[q] >> 1);
+		}
+	}
+	if (range <= SAFE_PART) {
+		let sum = 0;
+		for (let j = 0; j < COUNT; j++) {
+			sum = (sum + arr[j]) % range;
+		}
+		return sum;
+	} else {
+		let sum1 = 0;
+		let sum2 = 0;
+		const rangeExt = Math.floor(range / SAFE_LIMIT);
+		for (let j = 0; j < COUNT; j += 2) {
+			sum1 = (sum1 + arr[j]) & SAFE_PART;
+		}
+		for (let j = 1; j < COUNT; j += 2) {
+			sum2 = (sum2 + arr[j]) % rangeExt;
+		}
+		return (sum2 * SAFE_LIMIT + sum1) % range;
+	}
+};