chore: update webpack-dev-server config/script (garris#1519)

compare/webpack.config.js

@@ -3,6 +3,12 @@ const path = require('path');
 module.exports = {
   mode: 'production',
   entry: path.join(__dirname, 'src', 'index.js'),
+  devServer: {
+    static: {
+      directory: path.resolve(__dirname, 'output'),
+      serveIndex: true
+    }
+  },
   output: {
     path: path.resolve(__dirname, 'output'),
     filename: 'index_bundle.js'

package.json

@@ -22,7 +22,7 @@
     "unit-test": "mocha --reporter spec --recursive \"test/**/*_spec.js\" && npm run -s success-message || npm run -s fail-message",
     "precommit": "lint-staged",
     "build-compare": "cp ./node_modules/diverged/src/diverged.js ./compare/output/ && cp ./node_modules/diff/dist/diff.js ./compare/output/ && webpack --config ./compare/webpack.config.js && npm run -s lint",
-    "dev-compare": "webpack-dev-server --content-base ./compare/output --config ./compare/webpack.config.js",
+    "dev-compare": "webpack-dev-server --config ./compare/webpack.config.js",
     "integration-test": "rm -rf integrationTestDir && mkdir integrationTestDir && cd integrationTestDir && node ../cli/index.js init && node ../cli/index.js reference && node ../cli/index.js test && node -e \"require('../')('test')\" && npm --prefix ../ run -s success-message || npm --prefix ../ run -s fail-message",
     "smoke-test": "cd test/configs/ && node ../../cli/index.js test --config=backstop_features && npm --prefix ../../ run -s success-message || npm --prefix ../../ run -s caution-message",
     "smoke-test-playwright": "cd test/configs/ && node ../../cli/index.js test --config=backstop_features_pw && npm --prefix ../../ run -s fail-message || npm --prefix ../../ run -s caution-message",