test(dts): add cross call test

diff --git a/test-dts/actions.test-d.ts b/test-dts/actions.test-d.ts
new file mode 100644 (file)
index 0000000..d23d720
--- /dev/null
+++ b/test-dts/actions.test-d.ts
@@ -0,0 +1,51 @@
+import { defineStore, expectType } from '.'
+
+const useStore = defineStore({
+  id: 'name',
+  state: () => ({ count: 0 }),
+  actions: {
+    useOtherAction() {
+      return this.returnStuff()
+    },
+    useExternalFunction() {
+      return outer(this as any)
+    },
+    returnStuff() {
+      this.useOtherAction()
+      return this.count * 2
+    },
+    // return type is necessary
+    factorial(n?: number): number {
+      n ??= this.count
+      return n > 1 ? this.factorial(n - 1) * n : 1
+    },
+    crossA(): 'A' | 'B' {
+      if (this.count < 3) {
+        return 'A'
+      } else {
+        return this.crossB()
+      }
+    },
+    crossB() {
+      if (this.count > 2) {
+        return this.crossA()
+      } else {
+        return 'B'
+      }
+    },
+  },
+})
+
+function outer(store: ReturnType<typeof useStore>): number {
+  return store.count * 2
+}
+
+const store = useStore()
+
+expectType<'A' | 'B'>(store.crossA())
+expectType<'A' | 'B'>(store.crossB())
+expectType<number>(store.factorial())
+expectType<number>(store.returnStuff())
+expectType<number>(store.useExternalFunction())
+expectType<number>(store.useOtherAction())
+expectType<number>(outer(store))