(WIP) v6

README.md

@@ -53,7 +53,6 @@ Special thanks to the sponsors who support this open-source project:
   </picture>
 </a>
 
-
 ## Templates
 
 Get started by forking one of these templates on CodeSandbox:
@@ -551,7 +550,6 @@ actor.send({ type: 'PREVIOUS' });
 </tbody>
 </table>
 
-
 ## SemVer Policy
 
 We understand the importance of the public contract and do not intend to release any breaking changes to the **runtime** API in a minor or patch release. We consider this with any changes we make to the XState libraries and aim to minimize their effects on existing users.

package.json

@@ -26,13 +26,15 @@
     "preinstall": "node ./scripts/ensure-pnpm.js",
     "postinstall": "manypkg check && preconstruct dev",
     "build": "preconstruct build",
+    "watch": "preconstruct watch",
     "fix": "manypkg fix",
     "lint": "eslint --cache --quiet",
     "typecheck": "tsc",
     "test": "vitest run",
     "test:watch": "vitest",
     "test:core": "vitest run --project xstate",
     "test:core:watch": "vitest --project xstate",
+    "test:core:coverage": "vitest run --project xstate --coverage --coverage.provider=istanbul --coverage.include=packages/core/src/**/*.ts --coverage.exclude=**/*.test.ts",
     "test:store": "vitest run --project @xstate/store",
     "test:store:watch": "vitest --project @xstate/store",
     "changeset": "changeset",
@@ -59,8 +61,9 @@
     "@changesets/cli": "^2.29.5",
     "@eslint/js": "^9.26.0",
     "@manypkg/cli": "^0.21.4",
-    "@preconstruct/cli": "^2.8.1",
+    "@preconstruct/cli": "^2.8.12",
     "@types/node": "^20.14.13",
+    "@vitest/coverage-istanbul": "^3",
     "babel-preset-solid": "^1.8.4",
     "eslint": "^9.26.0",
     "eslint-plugin-jsdoc": "^50.6.14",

packages/core/package.json

@@ -20,48 +20,6 @@
       "import": "./dist/xstate.cjs.mjs",
       "default": "./dist/xstate.cjs.js"
     },
-    "./guards": {
-      "types": {
-        "import": "./guards/dist/xstate-guards.cjs.mjs",
-        "default": "./guards/dist/xstate-guards.cjs.js"
-      },
-      "development": {
-        "module": "./guards/dist/xstate-guards.development.esm.js",
-        "import": "./guards/dist/xstate-guards.development.cjs.mjs",
-        "default": "./guards/dist/xstate-guards.development.cjs.js"
-      },
-      "module": "./guards/dist/xstate-guards.esm.js",
-      "import": "./guards/dist/xstate-guards.cjs.mjs",
-      "default": "./guards/dist/xstate-guards.cjs.js"
-    },
-    "./actions": {
-      "types": {
-        "import": "./actions/dist/xstate-actions.cjs.mjs",
-        "default": "./actions/dist/xstate-actions.cjs.js"
-      },
-      "development": {
-        "module": "./actions/dist/xstate-actions.development.esm.js",
-        "import": "./actions/dist/xstate-actions.development.cjs.mjs",
-        "default": "./actions/dist/xstate-actions.development.cjs.js"
-      },
-      "module": "./actions/dist/xstate-actions.esm.js",
-      "import": "./actions/dist/xstate-actions.cjs.mjs",
-      "default": "./actions/dist/xstate-actions.cjs.js"
-    },
-    "./dev": {
-      "types": {
-        "import": "./dev/dist/xstate-dev.cjs.mjs",
-        "default": "./dev/dist/xstate-dev.cjs.js"
-      },
-      "development": {
-        "module": "./dev/dist/xstate-dev.development.esm.js",
-        "import": "./dev/dist/xstate-dev.development.cjs.mjs",
-        "default": "./dev/dist/xstate-dev.development.cjs.js"
-      },
-      "module": "./dev/dist/xstate-dev.esm.js",
-      "import": "./dev/dist/xstate-dev.cjs.mjs",
-      "default": "./dev/dist/xstate-dev.cjs.js"
-    },
     "./graph": {
       "types": {
         "import": "./graph/dist/xstate-graph.cjs.mjs",
@@ -138,16 +96,14 @@
     "ajv": "^8.12.0",
     "pkg-up": "^3.1.0",
     "rxjs": "^7.8.1",
-    "xml-js": "^1.6.11"
+    "xml-js": "^1.6.11",
+    "zod": "^3.25.51"
   },
   "preconstruct": {
     "umdName": "XState",
     "entrypoints": [
       "./index.ts",
-      "./actions.ts",
       "./actors/index.ts",
-      "./guards.ts",
-      "./dev/index.ts",
       "./graph/index.ts"
     ]
   }

packages/core/src/State.ts

@@ -1,8 +1,8 @@
 import isDevelopment from '#is-development';
 import { $$ACTOR_TYPE } from './createActor.ts';
 import type { StateNode } from './StateNode.ts';
 import type { StateMachine } from './StateMachine.ts';
-import { getStateValue } from './stateUtils.ts';
+import { getStateValue, getTransitionResult, hasEffect } from './stateUtils.ts';
 import type {
   ProvidedActor,
   AnyMachineSnapshot,
@@ -20,9 +20,13 @@
   StateSchema,
   StateId,
   SnapshotStatus,
-  PersistedHistoryValue
+  PersistedHistoryValue,
+  TODO,
+  AnyStateNode
 } from './types.ts';
 import { matchesState } from './utils.ts';
+import { createSystem } from './system.ts';
+import { createEmptyActor } from './actors/index.ts';
 
 type ToTestStateValue<TStateValue extends StateValue> =
   TStateValue extends string
@@ -71,7 +75,10 @@
     TOutput,
     EventObject, // TEmitted
     any, // TMeta
-    TStateSchema
+    TStateSchema,
+    TODO, // TActionMap
+    TODO, // TActorMap
+    TODO // TGuardMap
   >;
   /** The tags of the active state nodes that represent the current state value. */
   tags: Set<string>;
@@ -104,7 +111,7 @@
 
   historyValue: Readonly<HistoryValue<TContext, TEvent>>;
   /** The enabled state nodes representative of the state value. */
-  _nodes: Array<StateNode<TContext, TEvent>>;
+  _nodes: Array<AnyStateNode>;
   /** An object mapping actor names to spawned/invoked actors. */
   children: TChildren;
 
@@ -312,12 +319,23 @@
     );
   }
 
-  const transitionData = this.machine.getTransitionData(this, event);
+  const transitionData = this.machine.getTransitionData(this, event, {} as any);
 
   return (
     !!transitionData?.length &&
     // Check that at least one transition is not forbidden
-    transitionData.some((t) => t.target !== undefined || t.actions.length)
+    transitionData.some((t) => {
+      const res = getTransitionResult(t, this, event, {
+        self: createEmptyActor(),
+        system: createSystem(createEmptyActor(), {})
+      } as any);
+      return (
+        t.target !== undefined ||
+        res.targets?.length ||
+        res.context ||
+        hasEffect(t, this.context, event, this, {} as any)
+      );
+    })
   );
 };
 
@@ -402,9 +420,6 @@
   TContext extends MachineContext,
   TEvent extends EventObject
 >(historyValue: HistoryValue<TContext, TEvent>): PersistedHistoryValue {
-  if (typeof historyValue !== 'object' || historyValue === null) {
-    return {};
-  }
   const result: PersistedHistoryValue = {};
 
   for (const key in historyValue) {