using my boilerplate yuh

webpack/plugins/custom/TypeErrorNotifierPlugin.ts

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+import { Compiler } from 'webpack';
+import path from 'path';
+import ForkTsCheckerWebpackPlugin from 'fork-ts-checker-webpack-plugin';
+import WebpackBuildNotifierPlugin from 'webpack-build-notifier';
+import { Issue, IssueLocation } from 'fork-ts-checker-webpack-plugin/lib/issue';
+
+interface Resource {
+    path: string;
+    location: IssueLocation;
+}
+
+/**
+ * This plugin hooks into the fork-ts-checker-webpack-plugin and
+ * notifies the developer of type errors using the webpack-build-notifier plugin.
+ */
+export default class TypeErrorNotifierPlugin {
+    apply(compiler: Compiler) {
+        // hook into the fork-ts-checker-webpack-plugin
+        const hooks = ForkTsCheckerWebpackPlugin.getCompilerHooks(compiler);
+        hooks.issues.tap('MyPlugin', issues => {
+            const errors = issues.filter(issue => issue.severity === 'error');
+            if (!errors?.[0]?.message) {
+                return errors;
+            }
+
+            let error = errors[0];
+            let resource = getErrorResource(error);
+
+            try {
+                notifyTypeError(resource, error.message, errors);
+            } catch (e) {
+                console.error(e);
+            }
+            return errors;
+        });
+    }
+}
+
+function notifyTypeError(resource: Resource, message: string, errors: Issue[]) {
+    const { line, column } = resource.location.start;
+
+    const buildNotifier = new WebpackBuildNotifierPlugin({
+        logo: path.resolve('public', 'icons', 'icon_production_128.png'),
+        compilationSound: 'Pop',
+        failureSound: 'Sosumi',
+        title: `TS: ${errors.length} errors`,
+        notifyOptions: {
+            open: `vscode://file/${resource.path}:${line}:${column}`,
+        },
+    });
+
+    const fakeInput = {
+        hasErrors: () => true,
+        compilation: {
+            children: null,
+            errors: [
+                {
+                    message,
+                    module: {
+                        resource: resource.path,
+                    },
+                },
+            ],
+        },
+    };
+    // @ts-ignore - private method
+    buildNotifier.onCompilationDone(fakeInput);
+}
+
+function getErrorResource(error: Issue): Resource {
+    return {
+        path: error.file ?? '',
+        location: error.location ?? {
+            end: {
+                column: 0,
+                line: 0,
+            },
+            start: {
+                column: 0,
+                line: 0,
+            },
+        },
+    };
+}

webpack/plugins/custom/hotReloadServer.ts

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+import { Server } from 'socket.io';
+import { Compiler } from 'webpack';
+import ForkTsCheckerWebpackPlugin from 'fork-ts-checker-webpack-plugin';
+
+// Name of the plugin
+const PLUGIN_NAME = 'HotReloadServer';
+
+// How long to wait before reloading the browser after a successful build
+const RELOAD_LOCKOUT = 2000;
+
+// we want to cache all the "reload requests" here so we don't have to keep re-compiling the app while typing
+const reloads: NodeJS.Timeout[] = [];
+
+let io: Server;
+
+export function initializeHotReloading(port: number, compiler: Compiler) {
+    io = new Server(port);
+
+    const hooks = ForkTsCheckerWebpackPlugin.getCompilerHooks(compiler);
+    hooks.issues.tap(PLUGIN_NAME, (issues, compilation) => {
+        const typeErrors = issues.filter(issue => issue.severity === 'error');
+        const buildErrors = compilation?.errors ?? [];
+        // if no errors (thus successful build), lets queue up a reload for the browser
+        if (typeErrors.length === 0 && buildErrors.length === 0) {
+            reloads.push(setTimeout(() => io.emit('reload'), RELOAD_LOCKOUT));
+        }
+        return typeErrors;
+    });
+
+    // if a recompile is triggered, we want to clear out all the queue'd reloads
+    // (so we don't spam-reload the extension while we are still typing
+    compiler.hooks.compile.tap(PLUGIN_NAME, () => {
+        reloads.forEach(reload => clearTimeout(reload));
+        reloads.length = 0;
+    });
+}