chore: remove ts-ignore

Author: ricardogobbosouza

src/index.js

@@ -85,7 +85,6 @@ class ESLintWebpackPlugin {
    * @param {string[]} exclude
    */
   async run(compiler, options, wanted, exclude) {
-    // @ts-ignore
     const isCompilerHooked = compiler.hooks.compilation.taps.find(
       ({ name }) => name === this.key,
     );

src/linter.js

@@ -118,10 +118,10 @@ async function linter(key, options, compilation) {
       const save = (name, content) =>
         /** @type {Promise<void>} */ (
           new Promise((finish, bail) => {
-            // @ts-ignore
+            if (!compiler.outputFileSystem) return;
+
             const { mkdir, writeFile } = compiler.outputFileSystem;
-            // ensure directory exists
-            // @ts-ignore - the types for `outputFileSystem` are missing the 3 arg overload
+
             mkdir(dirname(name), { recursive: true }, (err) => {
               /* istanbul ignore if */
               if (err) bail(err);
@@ -276,8 +276,9 @@ async function removeIgnoredWarnings(eslint, results) {
     return ignored ? false : result;
   });
 
-  // @ts-ignore
-  return (await Promise.all(filterPromises)).filter(Boolean);
+  return (await Promise.all(filterPromises)).filter(
+    (result) => result !== false,
+  );
 }
 
 /**