Use lerna to simplify workflow

Basically it's useful only to run script across multiple packages.
Used in CI configurations.

.circleci/config.yml

@@ -19,10 +19,7 @@ jobs:
                 pkg-manager: yarn
 
             - run: yarn lint
-
-            - run: yarn mobx build --target test
-            - run: yarn mobx-react build --target test
-            - run: yarn mobx-react-lite build --target test
+            - run: yarn lerna run build:test
 
             - persist_to_workspace:
                   root: .
@@ -35,10 +32,7 @@ jobs:
                   at: .
 
             - run: yarn test -i
-
-            - run: yarn mobx test:size
-            - run: yarn mobx-react test:size
-            - run: yarn mobx-react-lite test:size
+            - run: yarn lerna run test:size
 
     mobx-test:
         executor: node-executor

.github/workflows/coveralls.yml

@@ -1,6 +1,6 @@
 name: Coveralls
 
-on: ["push", "pull_request"]
+on: ["pull_request"]
 
 jobs:
   mobx:
@@ -21,8 +21,8 @@ jobs:
       - name: Install Dependencies
         run: yarn --frozen-lockfile --ignore-scripts
 
-      - name: Build mobx
-        run: yarn mobx build --target test
+      - name: Build packages
+        run: yarn lerna run build:test
 
       - name: Run Coverage
         run: yarn coverage

lerna.json

@@ -0,0 +1,4 @@
+{
+    "packages": ["packages/*"],
+    "version": "independent"
+}

package.json

@@ -20,7 +20,6 @@
         "prepare": "yarn dedup && yarn --cwd website install",
         "dedup": "npx yarn-deduplicate --strategy fewer yarn.lock"
     },
-    "dependencies": {},
     "devDependencies": {
         "@changesets/changelog-github": "^0.2.7",
         "@changesets/cli": "^2.11.0",
@@ -43,6 +42,7 @@
         "iterall": "^1.3.0",
         "jest": "^26.6.2",
         "jest-mock-console": "^1.0.1",
+        "lerna": "^3.22.1",
         "lint-staged": "^10.1.7",
         "lodash": "^4.17.4",
         "minimist": "^1.2.5",

packages/mobx-react-lite/package.json

@@ -68,6 +68,7 @@
     "scripts": {
         "lint": "eslint src/**/* --ext .js,.ts,.tsx",
         "build": "node ../../scripts/build.js mobx-react-lite",
+        "build:test": "yarn build --target test",
         "test": "jest",
         "test:size": "yarn import-size --report . observer useLocalObservable",
         "prepublish": "yarn build --target publish"

packages/mobx-react/package.json

@@ -65,6 +65,7 @@
     "scripts": {
         "lint": "eslint src/**/* --ext .js,.ts,.tsx",
         "build": "node ../../scripts/build.js mobx-react",
+        "build:test": "yarn build --target test",
         "test": "jest",
         "test:size": "yarn import-size --report . observer",
         "prepublish": "yarn build --target publish"

packages/mobx/package.json

@@ -64,6 +64,7 @@
         "test": "jest",
         "lint": "eslint src/**/*",
         "build": "node ../../scripts/build.js mobx",
+        "build:test": "yarn build --target test",
         "perf": "scripts/perf.sh",
         "test:performance": "yarn perf proxy && yarn perf legacy",
         "test:mixed-versions": "yarn test --testRegex mixed-versions",