From d1d9f00b1bd660842addf5e6b1d1b64c852a9eea Mon Sep 17 00:00:00 2001
From: littleblack111 <littleblack11111@gmail.com>
Date: Sun, 5 Nov 2023 17:16:09 +0800
Subject: added hover prefixer

---
 node_modules/webpack/lib/util/numberHash.js | 99 +++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100644 node_modules/webpack/lib/util/numberHash.js

(limited to 'node_modules/webpack/lib/util/numberHash.js')

diff --git a/node_modules/webpack/lib/util/numberHash.js b/node_modules/webpack/lib/util/numberHash.js
new file mode 100644
index 00000000..f7150d13
--- /dev/null
+++ b/node_modules/webpack/lib/util/numberHash.js
@@ -0,0 +1,99 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+/**
+ * The maximum safe integer value for 32-bit integers.
+ * @type {number}
+ */
+const SAFE_LIMIT = 0x80000000;
+
+/**
+ * The maximum safe integer value for 32-bit integers minus one. This is used
+ * in the algorithm to ensure that intermediate hash values do not exceed the
+ * 32-bit integer limit.
+ * @type {number}
+ */
+const SAFE_PART = SAFE_LIMIT - 1;
+
+/**
+ * The number of 32-bit integers used to store intermediate hash values.
+ * @type {number}
+ */
+const COUNT = 4;
+
+/**
+ * An array used to store intermediate hash values during the calculation.
+ * @type {number[]}
+ */
+const arr = [0, 0, 0, 0, 0];
+
+/**
+ * An array of prime numbers used in the hash calculation.
+ * @type {number[]}
+ */
+const primes = [3, 7, 17, 19];
+
+/**
+ * Computes a hash value for the given string and range. This hashing algorithm is a modified
+ * version of the [FNV-1a algorithm](https://en.wikipedia.org/wiki/Fowler%E2%80%93Noll%E2%80%93Vo_hash_function).
+ * It is optimized for speed and does **not** generate a cryptographic hash value.
+ *
+ * We use `numberHash` in `lib/ids/IdHelpers.js` to generate hash values for the module identifier. The generated
+ * hash is used as a prefix for the module id's to avoid collisions with other modules.
+ *
+ * @param {string} str The input string to hash.
+ * @param {number} range The range of the hash value (0 to range-1).
+ * @returns {number} - The computed hash value.
+ *
+ * @example
+ *
+ * ```js
+ * const numberHash = require("webpack/lib/util/numberHash");
+ * numberHash("hello", 1000); // 57
+ * numberHash("hello world"); // 990
+ * ```
+ *
+ */
+module.exports = (str, range) => {
+	/**
+	 * Initialize the array with zeros before it is used
+	 * to store intermediate hash values.
+	 */
+	arr.fill(0);
+	// For each character in the string
+	for (let i = 0; i < str.length; i++) {
+		// Get the character code.
+		const c = str.charCodeAt(i);
+
+		// For each 32-bit integer used to store the hash value
+		// add the character code to the current hash value and multiply by the prime number and
+		// add the previous 32-bit integer.
+		arr[0] = (arr[0] + c * primes[0] + arr[3]) & SAFE_PART;
+		arr[1] = (arr[1] + c * primes[1] + arr[0]) & SAFE_PART;
+		arr[2] = (arr[2] + c * primes[2] + arr[1]) & SAFE_PART;
+		arr[3] = (arr[3] + c * primes[3] + arr[2]) & SAFE_PART;
+
+		// For each 32-bit integer used to store the hash value
+		// XOR the current hash value with the value of the next 32-bit integer.
+		arr[0] = arr[0] ^ (arr[arr[0] % COUNT] >> 1);
+		arr[1] = arr[1] ^ (arr[arr[1] % COUNT] >> 1);
+		arr[2] = arr[2] ^ (arr[arr[2] % COUNT] >> 1);
+		arr[3] = arr[3] ^ (arr[arr[3] % COUNT] >> 1);
+	}
+
+	if (range <= SAFE_PART) {
+		return (arr[0] + arr[1] + arr[2] + arr[3]) % range;
+	} else {
+		// Calculate the range extension.
+		const rangeExt = Math.floor(range / SAFE_LIMIT);
+
+		const sum1 = (arr[0] + arr[2]) & SAFE_PART;
+		const sum2 = (arr[0] + arr[2]) % rangeExt;
+
+		return (sum2 * SAFE_LIMIT + sum1) % range;
+	}
+};
-- 
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