diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 2e29bf635..d0886ede8 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -144,7 +144,7 @@ jobs:
             data = json.load(f)
 
           data["version"] = datetime.now().strftime("%Y.%m.%d")
-          data["jupyter-releaser"] = { "options": { "version-cmd": "npm run update:versions -- --yes" } }
+          data["jupyter-releaser"] = { "options": { "version-cmd": "yarn update:versions -- --yes" } }
 
           with open("package.json", "w") as f:
             data = json.dump(data, f)
diff --git a/package.json b/package.json
index 7e71700a5..24c6d338d 100644
--- a/package.json
+++ b/package.json
@@ -9,8 +9,8 @@
   ],
   "scripts": {
     "api": "lerna run api",
-    "build": "npm run build:src",
-    "build:dist": "npm run build && npm run minimize",
+    "build": "yarn build:src",
+    "build:dist": "yarn build && yarn minimize",
     "build:examples": "lerna run build --scope \"@lumino/example-*\" --concurrency 1",
     "build:src": "lerna run build --scope \"@lumino/!(test-|example-)*\" --concurrency 1",
     "build:test": "lerna run build:test",
@@ -29,7 +29,7 @@
     "minimize": "lerna run minimize",
     "prettier": "prettier --write \"**/*{.ts,.tsx,.js,.jsx,.css,.json,.md}\"",
     "prettier:check": "prettier --check \"**/*{.ts,.tsx,.js,.jsx,.css,.json,.md}\"",
-    "publish": "npm run clean && npm run build:dist && node scripts/tag-versions.js && lerna publish --yes -m \"Publish\" from-package",
+    "publish": "yarn clean && yarn build:dist && node scripts/tag-versions.js && lerna publish --yes -m \"Publish\" from-package",
     "remove:dependency": "remove-dependency",
     "test": "lerna run test --concurrency 1 --no-bail --scope \"@lumino/!(example-)*\"",
     "test:chromium": "lerna run test:chromium --no-bail --concurrency 1",
diff --git a/packages/algorithm/package.json b/packages/algorithm/package.json
index 1cd6899c9..576b60ab2 100644
--- a/packages/algorithm/package.json
+++ b/packages/algorithm/package.json
@@ -24,17 +24,17 @@
   ],
   "scripts": {
     "api": "api-extractor run --local --verbose",
-    "build": "npm run build:src && rollup -c",
+    "build": "yarn build:src && rollup -c",
     "build:src": "tsc --build",
-    "build:test": "npm run clean:test && tsc --build tests && cd tests && rollup -c",
+    "build:test": "yarn clean:test && tsc --build tests && cd tests && rollup -c",
     "clean": "rimraf ./lib *.tsbuildinfo ./types ./dist",
     "clean:test": "rimraf tests/lib tests/tsconfig.tsbuildinfo",
     "minimize": "terser dist/index.js -c -m --source-map \"content='dist/index.js.map',url='index.min.js.map'\" -o dist/index.min.js",
-    "test": "npm run build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
-    "test:debug": "npm run test -- --manual --open",
-    "test:chromium": "npm run test -- --browsers chromium",
-    "test:firefox": "npm run test -- --browsers firefox",
-    "test:webkit": "npm run test -- --browsers webkit",
+    "test": "yarn build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
+    "test:chromium": "yarn test -- --browsers chromium",
+    "test:debug": "yarn test -- --manual --open",
+    "test:firefox": "yarn test -- --browsers firefox",
+    "test:webkit": "yarn test -- --browsers webkit",
     "watch": "tsc --build --watch"
   },
   "devDependencies": {
diff --git a/packages/application/package.json b/packages/application/package.json
index a38945382..e6c8975b0 100644
--- a/packages/application/package.json
+++ b/packages/application/package.json
@@ -24,17 +24,17 @@
   ],
   "scripts": {
     "api": "api-extractor run --local --verbose",
-    "build": "npm run build:src && rollup -c",
+    "build": "yarn build:src && rollup -c",
     "build:src": "tsc --build",
-    "build:test": "npm run clean:test && tsc --build tests && cd tests && rollup -c",
+    "build:test": "yarn clean:test && tsc --build tests && cd tests && rollup -c",
     "clean": "rimraf ./lib *.tsbuildinfo ./types ./dist",
     "clean:test": "rimraf tests/lib tests/tsconfig.tsbuildinfo",
     "minimize": "terser dist/index.js -c -m --source-map \"content='dist/index.js.map',url='index.min.js.map'\" -o dist/index.min.js",
-    "test": "npm run build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
-    "test:debug": "npm run test -- --manual --open",
-    "test:chromium": "npm run test -- --browsers chromium",
-    "test:firefox": "npm run test -- --browsers firefox",
-    "test:webkit": "npm run test -- --browsers webkit",
+    "test": "yarn build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
+    "test:chromium": "yarn test -- --browsers chromium",
+    "test:debug": "yarn test -- --manual --open",
+    "test:firefox": "yarn test -- --browsers firefox",
+    "test:webkit": "yarn test -- --browsers webkit",
     "watch": "tsc --build --watch"
   },
   "dependencies": {
diff --git a/packages/collections/package.json b/packages/collections/package.json
index d5e8e46bc..b1e4a4637 100644
--- a/packages/collections/package.json
+++ b/packages/collections/package.json
@@ -24,17 +24,17 @@
   ],
   "scripts": {
     "api": "api-extractor run --local --verbose",
-    "build": "npm run build:src && rollup -c",
+    "build": "yarn build:src && rollup -c",
     "build:src": "tsc --build",
-    "build:test": "npm run clean:test && tsc --build tests && cd tests && rollup -c",
+    "build:test": "yarn clean:test && tsc --build tests && cd tests && rollup -c",
     "clean": "rimraf ./lib *.tsbuildinfo ./types ./dist",
     "clean:test": "rimraf tests/lib tests/tsconfig.tsbuildinfo",
     "minimize": "terser dist/index.js -c -m --source-map \"content='dist/index.js.map',url='index.min.js.map'\" -o dist/index.min.js",
-    "test": "npm run build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
-    "test:debug": "npm run test -- --manual --open",
-    "test:chromium": "npm run test -- --browsers chromium",
-    "test:firefox": "npm run test -- --browsers firefox",
-    "test:webkit": "npm run test -- --browsers webkit",
+    "test": "yarn build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
+    "test:chromium": "yarn test -- --browsers chromium",
+    "test:debug": "yarn test -- --manual --open",
+    "test:firefox": "yarn test -- --browsers firefox",
+    "test:webkit": "yarn test -- --browsers webkit",
     "watch": "tsc --build --watch"
   },
   "dependencies": {
diff --git a/packages/commands/package.json b/packages/commands/package.json
index 28e4eb272..ebcbf8435 100644
--- a/packages/commands/package.json
+++ b/packages/commands/package.json
@@ -24,17 +24,17 @@
   ],
   "scripts": {
     "api": "api-extractor run --local --verbose",
-    "build": "npm run build:src && rollup -c",
+    "build": "yarn build:src && rollup -c",
     "build:src": "tsc --build",
-    "build:test": "npm run clean:test && tsc --build tests && cd tests && rollup -c",
+    "build:test": "yarn clean:test && tsc --build tests && cd tests && rollup -c",
     "clean": "rimraf ./lib *.tsbuildinfo ./types ./dist",
     "clean:test": "rimraf tests/lib tests/tsconfig.tsbuildinfo",
     "minimize": "terser dist/index.js -c -m --source-map \"content='dist/index.js.map',url='index.min.js.map'\" -o dist/index.min.js",
-    "test": "npm run build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
-    "test:debug": "npm run test -- --manual --open",
-    "test:chromium": "npm run test -- --browsers chromium",
-    "test:firefox": "npm run test -- --browsers firefox",
-    "test:webkit": "npm run test -- --browsers webkit",
+    "test": "yarn build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
+    "test:chromium": "yarn test -- --browsers chromium",
+    "test:debug": "yarn test -- --manual --open",
+    "test:firefox": "yarn test -- --browsers firefox",
+    "test:webkit": "yarn test -- --browsers webkit",
     "watch": "tsc --build --watch"
   },
   "dependencies": {
diff --git a/packages/coreutils/package.json b/packages/coreutils/package.json
index 49147ebfc..38f84a9be 100644
--- a/packages/coreutils/package.json
+++ b/packages/coreutils/package.json
@@ -26,17 +26,17 @@
   ],
   "scripts": {
     "api": "api-extractor run --local --verbose",
-    "build": "npm run build:src && rollup -c",
+    "build": "yarn build:src && rollup -c",
     "build:src": "tsc --build",
-    "build:test": "npm run clean:test && tsc --build tests && cd tests && rollup -c",
+    "build:test": "yarn clean:test && tsc --build tests && cd tests && rollup -c",
     "clean": "rimraf ./lib *.tsbuildinfo ./types ./dist",
     "clean:test": "rimraf tests/lib tests/tsconfig.tsbuildinfo",
     "minimize": "terser dist/index.js -c -m --source-map \"content='dist/index.js.map',url='index.min.js.map'\" -o dist/index.min.js",
-    "test": "npm run build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
-    "test:debug": "npm run test -- --manual --open",
-    "test:chromium": "npm run test -- --browsers chromium",
-    "test:firefox": "npm run test -- --browsers firefox",
-    "test:webkit": "npm run test -- --browsers webkit",
+    "test": "yarn build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
+    "test:chromium": "yarn test -- --browsers chromium",
+    "test:debug": "yarn test -- --manual --open",
+    "test:firefox": "yarn test -- --browsers firefox",
+    "test:webkit": "yarn test -- --browsers webkit",
     "watch": "tsc --build --watch"
   },
   "dependencies": {
diff --git a/packages/datagrid/package.json b/packages/datagrid/package.json
index 8019921e9..a173b658a 100644
--- a/packages/datagrid/package.json
+++ b/packages/datagrid/package.json
@@ -24,17 +24,17 @@
   ],
   "scripts": {
     "api": "api-extractor run --local --verbose",
-    "build": "npm run build:src && rollup -c",
+    "build": "yarn build:src && rollup -c",
     "build:src": "tsc --build",
-    "build:test": "npm run clean:test && tsc --build tests && cd tests && rollup -c",
+    "build:test": "yarn clean:test && tsc --build tests && cd tests && rollup -c",
     "clean": "rimraf ./lib *.tsbuildinfo ./types ./dist",
     "clean:test": "rimraf tests/lib tests/tsconfig.tsbuildinfo",
     "minimize": "terser dist/index.js -c -m --source-map \"content='dist/index.js.map',url='index.min.js.map'\" -o dist/index.min.js",
-    "test": "npm run build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
-    "test:debug": "npm run test -- --manual --open",
-    "test:chromium": "npm run test -- --browsers chromium",
-    "test:firefox": "npm run test -- --browsers firefox",
-    "test:webkit": "npm run test -- --browsers webkit",
+    "test": "yarn build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
+    "test:chromium": "yarn test -- --browsers chromium",
+    "test:debug": "yarn test -- --manual --open",
+    "test:firefox": "yarn test -- --browsers firefox",
+    "test:webkit": "yarn test -- --browsers webkit",
     "watch": "tsc --build --watch"
   },
   "dependencies": {
diff --git a/packages/disposable/package.json b/packages/disposable/package.json
index 1c2ee75d9..6bbfb7c63 100644
--- a/packages/disposable/package.json
+++ b/packages/disposable/package.json
@@ -24,17 +24,17 @@
   ],
   "scripts": {
     "api": "api-extractor run --local --verbose",
-    "build": "npm run build:src && rollup -c",
+    "build": "yarn build:src && rollup -c",
     "build:src": "tsc --build",
-    "build:test": "npm run clean:test && tsc --build tests && cd tests && rollup -c",
+    "build:test": "yarn clean:test && tsc --build tests && cd tests && rollup -c",
     "clean": "rimraf ./lib *.tsbuildinfo ./types ./dist",
     "clean:test": "rimraf tests/lib tests/tsconfig.tsbuildinfo",
     "minimize": "terser dist/index.js -c -m --source-map \"content='dist/index.js.map',url='index.min.js.map'\" -o dist/index.min.js",
-    "test": "npm run build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
-    "test:debug": "npm run test -- --manual --open",
-    "test:chromium": "npm run test -- --browsers chromium",
-    "test:firefox": "npm run test -- --browsers firefox",
-    "test:webkit": "npm run test -- --browsers webkit",
+    "test": "yarn build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
+    "test:chromium": "yarn test -- --browsers chromium",
+    "test:debug": "yarn test -- --manual --open",
+    "test:firefox": "yarn test -- --browsers firefox",
+    "test:webkit": "yarn test -- --browsers webkit",
     "watch": "tsc --build --watch"
   },
   "dependencies": {
diff --git a/packages/domutils/package.json b/packages/domutils/package.json
index ca01c6ebd..9b3a5da65 100644
--- a/packages/domutils/package.json
+++ b/packages/domutils/package.json
@@ -24,17 +24,17 @@
   ],
   "scripts": {
     "api": "api-extractor run --local --verbose",
-    "build": "npm run build:src && rollup -c",
+    "build": "yarn build:src && rollup -c",
     "build:src": "tsc --build",
-    "build:test": "npm run clean:test && tsc --build tests && cd tests && rollup -c",
+    "build:test": "yarn clean:test && tsc --build tests && cd tests && rollup -c",
     "clean": "rimraf ./lib *.tsbuildinfo ./types ./dist",
     "clean:test": "rimraf tests/lib tests/tsconfig.tsbuildinfo",
     "minimize": "terser dist/index.js -c -m --source-map \"content='dist/index.js.map',url='index.min.js.map'\" -o dist/index.min.js",
-    "test": "npm run build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
-    "test:debug": "npm run test -- --manual --open",
-    "test:chromium": "npm run test -- --browsers chromium",
-    "test:firefox": "npm run test -- --browsers firefox",
-    "test:webkit": "npm run test -- --browsers webkit",
+    "test": "yarn build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
+    "test:chromium": "yarn test -- --browsers chromium",
+    "test:debug": "yarn test -- --manual --open",
+    "test:firefox": "yarn test -- --browsers firefox",
+    "test:webkit": "yarn test -- --browsers webkit",
     "watch": "tsc --build --watch"
   },
   "devDependencies": {
diff --git a/packages/dragdrop/package.json b/packages/dragdrop/package.json
index edfb3d174..ab8e6fc54 100644
--- a/packages/dragdrop/package.json
+++ b/packages/dragdrop/package.json
@@ -27,17 +27,17 @@
   ],
   "scripts": {
     "api": "api-extractor run --local --verbose",
-    "build": "npm run build:src && rollup -c",
+    "build": "yarn build:src && rollup -c",
     "build:src": "tsc --build",
-    "build:test": "npm run clean:test && tsc --build tests && cd tests && rollup -c",
+    "build:test": "yarn clean:test && tsc --build tests && cd tests && rollup -c",
     "clean": "rimraf ./lib *.tsbuildinfo ./types ./dist",
     "clean:test": "rimraf tests/lib tests/tsconfig.tsbuildinfo",
     "minimize": "terser dist/index.js -c -m --source-map \"content='dist/index.js.map',url='index.min.js.map'\" -o dist/index.min.js",
-    "test": "npm run build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
-    "test:debug": "npm run test -- --manual --open",
-    "test:chromium": "npm run test -- --browsers chromium",
-    "test:firefox": "npm run test -- --browsers firefox",
-    "test:webkit": "npm run test -- --browsers webkit",
+    "test": "yarn build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
+    "test:chromium": "yarn test -- --browsers chromium",
+    "test:debug": "yarn test -- --manual --open",
+    "test:firefox": "yarn test -- --browsers firefox",
+    "test:webkit": "yarn test -- --browsers webkit",
     "watch": "tsc --build --watch"
   },
   "dependencies": {
diff --git a/packages/keyboard/package.json b/packages/keyboard/package.json
index 4b521f0b1..aab2478cd 100644
--- a/packages/keyboard/package.json
+++ b/packages/keyboard/package.json
@@ -24,17 +24,17 @@
   ],
   "scripts": {
     "api": "api-extractor run --local --verbose",
-    "build": "npm run build:src && rollup -c",
+    "build": "yarn build:src && rollup -c",
     "build:src": "tsc --build",
-    "build:test": "npm run clean:test && tsc --build tests && cd tests && rollup -c",
+    "build:test": "yarn clean:test && tsc --build tests && cd tests && rollup -c",
     "clean": "rimraf ./lib *.tsbuildinfo ./types ./dist",
     "clean:test": "rimraf tests/lib tests/tsconfig.tsbuildinfo",
     "minimize": "terser dist/index.js -c -m --source-map \"content='dist/index.js.map',url='index.min.js.map'\" -o dist/index.min.js",
-    "test": "npm run build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
-    "test:debug": "npm run test -- --manual --open",
-    "test:chromium": "npm run test -- --browsers chromium",
-    "test:firefox": "npm run test -- --browsers firefox",
-    "test:webkit": "npm run test -- --browsers webkit",
+    "test": "yarn build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
+    "test:chromium": "yarn test -- --browsers chromium",
+    "test:debug": "yarn test -- --manual --open",
+    "test:firefox": "yarn test -- --browsers firefox",
+    "test:webkit": "yarn test -- --browsers webkit",
     "watch": "tsc --build --watch"
   },
   "devDependencies": {
diff --git a/packages/messaging/package.json b/packages/messaging/package.json
index 8440a7f89..6ab6bb62c 100644
--- a/packages/messaging/package.json
+++ b/packages/messaging/package.json
@@ -24,17 +24,17 @@
   ],
   "scripts": {
     "api": "api-extractor run --local --verbose",
-    "build": "npm run build:src && rollup -c",
+    "build": "yarn build:src && rollup -c",
     "build:src": "tsc --build",
-    "build:test": "npm run clean:test && tsc --build tests && cd tests && rollup -c",
+    "build:test": "yarn clean:test && tsc --build tests && cd tests && rollup -c",
     "clean": "rimraf ./lib *.tsbuildinfo ./types ./dist",
     "clean:test": "rimraf tests/lib tests/tsconfig.tsbuildinfo",
     "minimize": "terser dist/index.js -c -m --source-map \"content='dist/index.js.map',url='index.min.js.map'\" -o dist/index.min.js",
-    "test": "npm run build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
-    "test:debug": "npm run test -- --manual --open",
-    "test:chromium": "npm run test -- --browsers chromium",
-    "test:firefox": "npm run test -- --browsers firefox",
-    "test:webkit": "npm run test -- --browsers webkit",
+    "test": "yarn build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
+    "test:chromium": "yarn test -- --browsers chromium",
+    "test:debug": "yarn test -- --manual --open",
+    "test:firefox": "yarn test -- --browsers firefox",
+    "test:webkit": "yarn test -- --browsers webkit",
     "watch": "tsc --build --watch"
   },
   "dependencies": {
diff --git a/packages/polling/package.json b/packages/polling/package.json
index a34018f06..859dbb4e8 100644
--- a/packages/polling/package.json
+++ b/packages/polling/package.json
@@ -24,17 +24,17 @@
   ],
   "scripts": {
     "api": "api-extractor run --local --verbose",
-    "build": "npm run build:src && rollup -c",
+    "build": "yarn build:src && rollup -c",
     "build:src": "tsc --build",
-    "build:test": "npm run clean:test && tsc --build tests && cd tests && rollup -c",
+    "build:test": "yarn clean:test && tsc --build tests && cd tests && rollup -c",
     "clean": "rimraf ./lib *.tsbuildinfo ./types ./dist",
     "clean:test": "rimraf tests/lib tests/tsconfig.tsbuildinfo",
     "minimize": "terser dist/index.js -c -m --source-map \"content='dist/index.js.map',url='index.min.js.map'\" -o dist/index.min.js",
-    "test": "npm run build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
-    "test:debug": "npm run test -- --manual --open",
-    "test:chromium": "npm run test -- --browsers chromium",
-    "test:firefox": "npm run test -- --browsers firefox",
-    "test:webkit": "npm run test -- --browsers webkit",
+    "test": "yarn build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
+    "test:chromium": "yarn test -- --browsers chromium",
+    "test:debug": "yarn test -- --manual --open",
+    "test:firefox": "yarn test -- --browsers firefox",
+    "test:webkit": "yarn test -- --browsers webkit",
     "watch": "tsc --build --watch"
   },
   "dependencies": {
diff --git a/packages/properties/package.json b/packages/properties/package.json
index a8766ddab..28c1655e6 100644
--- a/packages/properties/package.json
+++ b/packages/properties/package.json
@@ -24,17 +24,17 @@
   ],
   "scripts": {
     "api": "api-extractor run --local --verbose",
-    "build": "npm run build:src && rollup -c",
+    "build": "yarn build:src && rollup -c",
     "build:src": "tsc --build",
-    "build:test": "npm run clean:test && tsc --build tests && cd tests && rollup -c",
+    "build:test": "yarn clean:test && tsc --build tests && cd tests && rollup -c",
     "clean": "rimraf ./lib *.tsbuildinfo ./types ./dist",
     "clean:test": "rimraf tests/lib tests/tsconfig.tsbuildinfo",
     "minimize": "terser dist/index.js -c -m --source-map \"content='dist/index.js.map',url='index.min.js.map'\" -o dist/index.min.js",
-    "test": "npm run build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
-    "test:debug": "npm run test -- --manual --open",
-    "test:chromium": "npm run test -- --browsers chromium",
-    "test:firefox": "npm run test -- --browsers firefox",
-    "test:webkit": "npm run test -- --browsers webkit",
+    "test": "yarn build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
+    "test:chromium": "yarn test -- --browsers chromium",
+    "test:debug": "yarn test -- --manual --open",
+    "test:firefox": "yarn test -- --browsers firefox",
+    "test:webkit": "yarn test -- --browsers webkit",
     "watch": "tsc --build --watch"
   },
   "devDependencies": {
diff --git a/packages/signaling/package.json b/packages/signaling/package.json
index e691ee347..3b32a955f 100644
--- a/packages/signaling/package.json
+++ b/packages/signaling/package.json
@@ -24,17 +24,17 @@
   ],
   "scripts": {
     "api": "api-extractor run --local --verbose",
-    "build": "npm run build:src && rollup -c",
+    "build": "yarn build:src && rollup -c",
     "build:src": "tsc --build",
-    "build:test": "npm run clean:test && tsc --build tests && cd tests && rollup -c",
+    "build:test": "yarn clean:test && tsc --build tests && cd tests && rollup -c",
     "clean": "rimraf ./lib *.tsbuildinfo ./types ./dist",
     "clean:test": "rimraf tests/lib tests/tsconfig.tsbuildinfo",
     "minimize": "terser dist/index.js -c -m --source-map \"content='dist/index.js.map',url='index.min.js.map'\" -o dist/index.min.js",
-    "test": "npm run build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
-    "test:debug": "npm run test -- --manual --open",
-    "test:chromium": "npm run test -- --browsers chromium",
-    "test:firefox": "npm run test -- --browsers firefox",
-    "test:webkit": "npm run test -- --browsers webkit",
+    "test": "yarn build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
+    "test:chromium": "yarn test -- --browsers chromium",
+    "test:debug": "yarn test -- --manual --open",
+    "test:firefox": "yarn test -- --browsers firefox",
+    "test:webkit": "yarn test -- --browsers webkit",
     "watch": "tsc --build --watch"
   },
   "dependencies": {
diff --git a/packages/virtualdom/package.json b/packages/virtualdom/package.json
index 569d1927e..bdd23a169 100644
--- a/packages/virtualdom/package.json
+++ b/packages/virtualdom/package.json
@@ -24,17 +24,17 @@
   ],
   "scripts": {
     "api": "api-extractor run --local --verbose",
-    "build": "npm run build:src && rollup -c",
+    "build": "yarn build:src && rollup -c",
     "build:src": "tsc --build",
-    "build:test": "npm run clean:test && tsc --build tests && cd tests && rollup -c",
+    "build:test": "yarn clean:test && tsc --build tests && cd tests && rollup -c",
     "clean": "rimraf ./lib *.tsbuildinfo ./types ./dist",
     "clean:test": "rimraf tests/lib tests/tsconfig.tsbuildinfo",
     "minimize": "terser dist/index.js -c -m --source-map \"content='dist/index.js.map',url='index.min.js.map'\" -o dist/index.min.js",
-    "test": "npm run build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
-    "test:debug": "npm run test -- --manual --open",
-    "test:chromium": "npm run test -- --browsers chromium",
-    "test:firefox": "npm run test -- --browsers firefox",
-    "test:webkit": "npm run test -- --browsers webkit",
+    "test": "yarn build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
+    "test:chromium": "yarn test -- --browsers chromium",
+    "test:debug": "yarn test -- --manual --open",
+    "test:firefox": "yarn test -- --browsers firefox",
+    "test:webkit": "yarn test -- --browsers webkit",
     "watch": "tsc --build --watch"
   },
   "dependencies": {
diff --git a/packages/widgets/package.json b/packages/widgets/package.json
index 0a928aac6..c1cffc62c 100644
--- a/packages/widgets/package.json
+++ b/packages/widgets/package.json
@@ -27,17 +27,17 @@
   ],
   "scripts": {
     "api": "api-extractor run --local --verbose",
-    "build": "npm run build:src && rollup -c",
+    "build": "yarn build:src && rollup -c",
     "build:src": "tsc --build",
-    "build:test": "npm run clean:test && tsc --build tests && cd tests && rollup -c",
+    "build:test": "yarn clean:test && tsc --build tests && cd tests && rollup -c",
     "clean": "rimraf ./lib *.tsbuildinfo ./types ./dist",
     "clean:test": "rimraf tests/lib tests/tsconfig.tsbuildinfo",
     "minimize": "terser dist/index.js -c -m --source-map \"content='dist/index.js.map',url='index.min.js.map'\" -o dist/index.min.js",
-    "test": "npm run build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
-    "test:debug": "npm run test -- --manual --open",
-    "test:chromium": "npm run test -- --browsers chromium",
-    "test:firefox": "npm run test -- --browsers firefox",
-    "test:webkit": "npm run test -- --browsers webkit",
+    "test": "yarn build:test && web-test-runner tests/lib/bundle.test.js --node-resolve --playwright",
+    "test:chromium": "yarn test -- --browsers chromium",
+    "test:debug": "yarn test -- --manual --open",
+    "test:firefox": "yarn test -- --browsers firefox",
+    "test:webkit": "yarn test -- --browsers webkit",
     "watch": "tsc --build --watch"
   },
   "dependencies": {