chore: update ESlint from v8 to v9

Author: ersachin3112

package-lock.json

@@ -82,6 +82,8 @@
     "eslint-plugin-jest": "^29.0.1",
     "eslint-plugin-jsdoc": "^51.4.1",
     "eslint-plugin-n": "^17.21.0",
+    "eslint-plugin-prettier": "^5.5.3",
+    "eslint-plugin-unicorn": "^59.0.1",
     "file-loader": "^6.2.0",
     "husky": "^9.1.4",
     "is-gzip": "^2.0.0",

package.json

@@ -177,7 +177,7 @@ class CopyPlugin {
       compilation.fileSystemInfo.createSnapshot(
         startTime,
         [dependency],
-        // @ts-ignore
+        // @ts-expect-error - webpack types are incomplete
         undefined,
 
         undefined,
@@ -288,7 +288,7 @@ class CopyPlugin {
     let stats;
 
     try {
-      // @ts-ignore
+      // @ts-expect-error - webpack types are incomplete
       stats = await stat(inputFileSystem, absoluteFrom);
     } catch {
       // Nothing
@@ -326,7 +326,7 @@ class CopyPlugin {
     };
 
     // Will work when https://github.com/SuperchupuDev/tinyglobby/issues/81 will be resolved, so let's pass it to `tinyglobby` right now
-    // @ts-ignore
+    // @ts-expect-error - tinyglobby types are incomplete
     globOptions.fs = inputFileSystem;
 
     let glob;
@@ -458,13 +458,13 @@ class CopyPlugin {
               : path.normalize(
                   typeof pattern.to !== "undefined" ? pattern.to : "",
                 );
-          const toType = pattern.toType
-            ? pattern.toType
-            : template.test(to)
+          const toType =
+            pattern.toType ||
+            (template.test(to)
               ? "template"
               : path.extname(to) === "" || to.slice(-1) === path.sep
                 ? "dir"
-                : "file";
+                : "file");
 
           logger.log(`'to' option '${to}' determinated as '${toType}'`);
 
@@ -550,7 +550,7 @@ class CopyPlugin {
             let data;
 
             try {
-              // @ts-ignore
+              // @ts-expect-error - webpack types are incomplete
               data = await readFile(inputFileSystem, absoluteFilename);
             } catch (error) {
               compilation.errors.push(/** @type {WebpackError} */ (error));
@@ -856,10 +856,10 @@ class CopyPlugin {
                */
               let filteredCopiedResult = copiedResult.filter(
                 /**
-                 * @param {CopiedResult | undefined} result
-                 * @returns {result is CopiedResult}
+                 * @param {CopiedResult | undefined} result The result to filter
+                 * @returns {result is CopiedResult} True if the result is defined
                  */
-                Boolean,
+                (result) => result !== undefined,
               );
 
               if (typeof normalizedPattern.transformAll !== "undefined") {
@@ -894,7 +894,7 @@ class CopyPlugin {
                          * @param {number} i // Index of the asset in the array
                          * @returns {Etag} // Merged Etag
                          */
-                        // @ts-ignore
+                        // @ts-expect-error - webpack cache types are incomplete
                         (accumulator, asset, i) => {
                           accumulator = cache.mergeEtags(
                             i === 1
@@ -1005,7 +1005,7 @@ class CopyPlugin {
                 const sortedByIndex = [...val[1]].sort((a, b) => a[0] - b[0]);
 
                 for (const [, item] of sortedByIndex) {
-                  acc = acc.concat(item);
+                  acc = [...acc, ...item];
                 }
 
                 return acc;
@@ -1079,8 +1079,10 @@ class CopyPlugin {
             .for("asset.info.copied")
             .tap(PLUGIN_NAME, (copied, { green, formatFlag }) =>
               copied
-                ? /** @type {Function} */ (green)(
-                    /** @type {Function} */ (formatFlag)("copied"),
+                ? /** @type {(text: string) => string} */ (green)(
+                    /** @type {(flag: string) => string} */ (formatFlag)(
+                      "copied",
+                    ),
                   )
                 : "",
             );

src/index.js

@@ -14,7 +14,6 @@ function stat(inputFileSystem, path) {
        * @param {null | undefined | NodeJS.ErrnoException} err // An error that occurred while trying to get the stats.
        * @param {undefined | Stats} stats // The stats of the file or directory, if available.
        */
-      // @ts-ignore
       (err, stats) => {
         if (err) {
           reject(err);
@@ -96,7 +95,7 @@ function throttleAll(limit, tasks) {
         const isLast = !result.includes(notSettled);
 
         if (isLast) {
-          resolve(/** @type{T[]} * */ (result));
+          resolve(/** @type {T[]} */ (result));
         }
 
         return;
@@ -105,24 +104,26 @@ function throttleAll(limit, tasks) {
       const [index, task] = value;
 
       /**
-       * @param {T} x // The result of the task that was fulfilled.
+       * @param {T} taskResult The result of the task that was fulfilled.
        */
-      const onFulfilled = (x) => {
-        result[index] = x;
+      const onFulfilled = (taskResult) => {
+        result[index] = taskResult;
         next();
       };
 
       task().then(onFulfilled, reject);
     };
 
-    new Array(limit).fill(0).forEach(next);
+    for (let i = 0; i < limit; i++) {
+      next();
+    }
   });
 }
 
 /**
  * @template T
- * @param fn {(function(): any) | undefined} // The function to memoize.
- * @returns {function(): T} // A memoized function that returns the result of the original function.
+ * @param {(() => unknown) | undefined} fn The function to memoize.
+ * @returns {() => T} A memoized function that returns the result of the original function.
  */
 function memoize(fn) {
   let cache = false;
@@ -134,7 +135,7 @@ function memoize(fn) {
       return result;
     }
 
-    result = /** @type {function(): any} */ (fn)();
+    result = /** @type {T} */ (/** @type {() => unknown} */ (fn)());
     cache = true;
     // Allow to clean up memory for fn
     // and all dependent resources