ref: Remove references to Webpack 4 (#43)

As we currently only support Node 18+, we currently cannot support Webpack 4.

Author: nsdeschenes

.changeset/flat-coats-jump.md

@@ -0,0 +1,8 @@
+---
+"@codecov/webpack-plugin": patch
+"@codecov/bundler-plugin-core": patch
+"@codecov/rollup-plugin": patch
+"@codecov/vite-plugin": patch
+---
+
+Remove references to Webpack 4, as we currently on support Node 18+.

packages/webpack-plugin/package.json

@@ -42,8 +42,7 @@
     "test:unit:ci": "jest --coverage"
   },
   "dependencies": {
-    "@codecov/bundler-plugin-core": "workspace:^",
-    "webpack": "5.89.0"
+    "@codecov/bundler-plugin-core": "workspace:^"
   },
   "devDependencies": {
     "@swc/core": "^1.3.99",
@@ -55,10 +54,11 @@
     "msw": "^2.0.9",
     "ts-node": "^10.9.1",
     "typescript": "^5.3.2",
-    "unbuild": "^2.0.0"
+    "unbuild": "^2.0.0",
+    "webpack": "^5.89.0"
   },
   "peerDependencies": {
-    "webpack": "^5.0"
+    "webpack": "webpack@^5.0"
   },
   "volta": {
     "extends": "../../package.json"

packages/webpack-plugin/src/webpack-bundle-analysis/webpackBundleAnalysisPlugin.ts

@@ -3,7 +3,8 @@ import {
   normalizePath,
   type BundleAnalysisUploadPlugin,
 } from "@codecov/bundler-plugin-core";
-import * as webpack4or5 from "webpack";
+import * as webpack from "webpack";
+
 import { findFilenameFormat } from "./findFileFormat";
 
 const PLUGIN_NAME = "codecov-webpack-bundle-analysis-plugin";
@@ -20,7 +21,7 @@ export const webpackBundleAnalysisPlugin: BundleAnalysisUploadPlugin = ({
       compilation.hooks.processAssets.tap(
         {
           name: PLUGIN_NAME,
-          stage: webpack4or5.Compilation.PROCESS_ASSETS_STAGE_REPORT,
+          stage: webpack.Compilation.PROCESS_ASSETS_STAGE_REPORT,
         },
         () => {
           // don't need to do anything if the bundle name is not present or empty
@@ -47,7 +48,7 @@ export const webpackBundleAnalysisPlugin: BundleAnalysisUploadPlugin = ({
 
           output.bundler = {
             name: "webpack",
-            version: webpack4or5.version,
+            version: webpack.version,
           };
 
           const outputOptions = compilation.outputOptions;
@@ -131,7 +132,7 @@ export const webpackBundleAnalysisPlugin: BundleAnalysisUploadPlugin = ({
 
           // only output file if running dry run
           if (userOptions?.dryRun) {
-            const { RawSource } = webpack4or5.sources;
+            const { RawSource } = webpack.sources;
             compilation.emitAsset(
               "codecov-bundle-stats.json",
               new RawSource(JSON.stringify(output)),