fix: fix dev/prod dependencies (#76)

package.json

@@ -16,17 +16,11 @@
   "author": "D2L Corporation",
   "license": "Apache-2.0",
   "devDependencies": {
-    "@rollup/plugin-node-resolve": "^15",
     "@web/dev-server": "^0.2",
-    "@web/rollup-plugin-html": "^2",
     "chai": "^4",
-    "deepmerge": "^4",
     "eslint": "^8",
     "eslint-config-brightspace": "^0.23",
-    "lit": "^2",
     "mocha": "^10",
-    "page": "^1",
-    "rollup": "^3",
     "sinon": "^15"
   },
   "exports": {
@@ -40,13 +34,18 @@
     "access": "public"
   },
   "dependencies": {
+    "@rollup/plugin-node-resolve": "^15",
     "@open-wc/testing": "^3",
+    "@web/rollup-plugin-html": "^2",
     "@web/test-runner": "^0.16",
     "@web/test-runner-commands": "^0.7",
     "@web/test-runner-playwright": "^0.10",
     "command-line-args": "^5",
     "glob": "^10",
+    "lit": "^2",
+    "page": "^1",
     "pixelmatch": "^5",
-    "pngjs": "^7"
+    "pngjs": "^7",
+    "rollup": "^3"
   }
 }

src/server/visual-diff-plugin.js

@@ -1,7 +1,6 @@
 import { access, constants, mkdir, readdir, readFile, rename, rm, writeFile } from 'node:fs/promises';
 import { basename, dirname, join } from 'node:path';
 import { env } from 'node:process';
-import merge from 'deepmerge';
 import pixelmatch from 'pixelmatch';
 import { PNG } from 'pngjs';
 
@@ -123,7 +122,14 @@ function getTestInfoKey(session, fullTitle) {
 function setTestInfo(session, fullTitle, testInfo) {
 	const key = getTestInfoKey(session, fullTitle);
 	if (testInfoMap.has(key)) {
-		testInfo = merge(testInfoMap.get(key), testInfo);
+		const info = testInfoMap.get(key);
+		if (info.golden || testInfo.golden) {
+			testInfo.golden = { ...info.golden, ...testInfo.golden };
+		}
+		if (info.new || testInfo.new) {
+			testInfo.new = { ...info.new, ...testInfo.new };
+		}
+		testInfo.diff = testInfo.diff || info.diff;
 	}
 	testInfoMap.set(key, testInfo);
 }