source: frontend/node_modules/webpack/lib/util/hash/DebugHash.js

/*
        MIT License http://www.opensource.org/licenses/mit-license.php
        Author Alexander Akait @alexander-akait
*/

"use strict";

const Hash = require("../Hash");

/** @typedef {import("../../../declarations/WebpackOptions").HashDigest} Encoding */

/* istanbul ignore next */
class DebugHash extends Hash {
        constructor() {
                super();
                this.string = "";
        }

        /**
         * Update hash {@link https://nodejs.org/api/crypto.html#crypto_hash_update_data_inputencoding}
         * @overload
         * @param {string | Buffer} data data
         * @returns {Hash} updated hash
         */
        /**
         * Update hash {@link https://nodejs.org/api/crypto.html#crypto_hash_update_data_inputencoding}
         * @overload
         * @param {string} data data
         * @param {Encoding} inputEncoding data encoding
         * @returns {Hash} updated hash
         */
        /**
         * Update hash {@link https://nodejs.org/api/crypto.html#crypto_hash_update_data_inputencoding}
         * @param {string | Buffer} data data
         * @param {Encoding=} inputEncoding data encoding
         * @returns {Hash} updated hash
         */
        update(data, inputEncoding) {
                if (typeof data !== "string") data = data.toString("utf8");
                const prefix = Buffer.from("@webpack-debug-digest@").toString("hex");
                if (data.startsWith(prefix)) {
                        data = Buffer.from(data.slice(prefix.length), "hex").toString();
                }
                this.string += `[${data}](${
                        /** @type {string} */
                        (
                                // eslint-disable-next-line unicorn/error-message
                                new Error().stack
                        ).split("\n", 3)[2]
                })\n`;
                return this;
        }

        /**
         * Calculates the digest {@link https://nodejs.org/api/crypto.html#crypto_hash_digest_encoding}
         * @overload
         * @returns {Buffer} digest
         */
        /**
         * Calculates the digest {@link https://nodejs.org/api/crypto.html#crypto_hash_digest_encoding}
         * @overload
         * @param {Encoding} encoding encoding of the return value
         * @returns {string} digest
         */
        /**
         * Calculates the digest {@link https://nodejs.org/api/crypto.html#crypto_hash_digest_encoding}
         * @param {Encoding=} encoding encoding of the return value
         * @returns {string | Buffer} digest
         */
        digest(encoding) {
                return Buffer.from(`@webpack-debug-digest@${this.string}`).toString("hex");
        }
}

module.exports = DebugHash;