Add commonjs version

commonjs/index.js

@@ -0,0 +1,15 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+Object.defineProperty(exports, "init", {
+  enumerable: true,
+  get: function () {
+    return _init.default;
+  }
+});
+
+var _init = _interopRequireDefault(require("./src/init.js"));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

commonjs/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "commonjs"
+}

commonjs/src/init.js

@@ -0,0 +1,62 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = init;
+const ACTION_ARITY = 2;
+
+function init({
+  state,
+  actions,
+  subscribers
+}) {
+  // eslint-disable-next-line fp/no-let
+  let currentState = state; // eslint-disable-next-line fp/no-let, init-declarations
+
+  let shouldNotifySubscribers; // eslint-disable-next-line fp/no-let, init-declarations, prefer-const
+
+  let boundActions;
+
+  function notifySubscribers({
+    actionName,
+    value
+  } = {}) {
+    // eslint-disable-next-line fp/no-mutation
+    shouldNotifySubscribers = true;
+    subscribers.every(subscriber => {
+      subscriber({
+        state: currentState,
+        actions: boundActions,
+        actionName,
+        value
+      });
+      return shouldNotifySubscribers;
+    }); // eslint-disable-next-line fp/no-mutation
+
+    shouldNotifySubscribers = false;
+  } // eslint-disable-next-line fp/no-mutation
+
+
+  boundActions = Object.fromEntries(Object.entries(actions).map(([actionName, action]) => [actionName, function boundAction(value) {
+    function getNewState() {
+      if (action.length === ACTION_ARITY) {
+        return action(value, currentState);
+      }
+
+      const partiallyAppliedActionOrNewState = action(currentState);
+      return typeof partiallyAppliedActionOrNewState === "function" ? // Turns out we have a curried action here.
+      // Reapplying arguments in the correct order:
+      action(value)(currentState) : partiallyAppliedActionOrNewState;
+    } // eslint-disable-next-line fp/no-mutation
+
+
+    currentState = getNewState();
+    notifySubscribers({
+      actionName,
+      value
+    });
+  }]));
+  notifySubscribers();
+  return boundActions;
+}

package.json

@@ -6,7 +6,8 @@
   "author": "Evgeny Orekhov",
   "files": [
     "index.js",
-    "src/init.js"
+    "src/init.js",
+    "commonjs/"
   ],
   "sideEffects": false,
   "type": "module",
@@ -16,7 +17,10 @@
     "lint": "run-p --aggregate-output lint:**",
     "lint:js": "eslint . --ext .js,.json",
     "lint:prettier": "prettier --check *.{js,css,json,md,html,yml,yaml}",
-    "test": "jest"
+    "test": "jest",
+    "build": "babel index.js --out-dir commonjs/ && babel src/ --out-dir commonjs/src/ --ignore 'src/**/*.test.js'",
+    "preversion": "npm run build && git add commonjs/",
+        "postversion": "git push && git push --tags && npm publish"
   },
   "husky": {
     "hooks": {
@@ -38,6 +42,7 @@
     "collectCoverage": true
   },
   "devDependencies": {
+    "@babel/cli": "^7.8.0",
     "@babel/core": "^7.8.0",
     "@babel/preset-env": "^7.8.0",
     "babel-jest": "^24.9.0",