कोई भी अधिभार इस कॉल से मेल नहीं खाता है। ओवरलोड 2 में से 1,

Question

मेरे पास store.jsफाइल है

import { createStore, combineReducers } from "redux";
import reducerADD from "../reducer/reducerADD"

export const store = createStore(combineReducers({ reducerADD}));

जब मैं प्रारूप बदल store.tsxरहा हूँ तो मुझे एक त्रुटि मिल रही है:

No overload matches this call.
  Overload 1 of 2, '(reducers: ReducersMapObject<{ reducerADD: { lastName: string; firstName: string; password: string; email: string; }[]; }, any>): Reducer<{ reducerADD: { lastName: string; firstName: string; password: string; email: string; }[]; }, AnyAction>', gave the following error.
    Type '(state: never[] | undefined, action: action) => { lastName: string; firstName: string; password: string; email: string; }[]' is not assignable to type 'Reducer<{ lastName: string; firstName: string; password: string; email: string; }[], any>'.
      Types of parameters 'state' and 'state' are incompatible.
        Type '{ lastName: string; firstName: string; password: string; email: string; }[] | undefined' is not assignable to type 'never[] | undefined'.
          Type '{ lastName: string; firstName: string; password: string; email: string; }[]' is not assignable to type 'never[]'.
            Type '{ lastName: string; firstName: string; password: string; email: string; }' is not assignable to type 'never'.
  Overload 2 of 2, '(reducers: ReducersMapObject<{ reducerADD: { lastName: string; firstName: string; password: string; email: string; }[]; }, AnyAction>): Reducer<{ reducerADD: { lastName: string; firstName: string; password: string; email: string; }[]; }, AnyAction>', gave the following error.
    Type '(state: never[] | undefined, action: action) => { lastName: string; firstName: string; password: string; email: string; }[]' is not assignable to type 'Reducer<{ lastName: string; firstName: string; password: string; email: string; }[], AnyAction>'.
      Types of parameters 'state' and 'state' are incompatible.
        Type '{ lastName: string; firstName: string; password: string; email: string; }[] | undefined' is not assignable to type 'never[] | undefined'.
          Type '{ lastName: string; firstName: string; password: string; email: string; }[]' is not assignable to type 'never[]'.

इसका कारण क्या है?

Comments

की परिभाषा क्या है reducerADD?

— Cerberus

const reducerADD = (state = [], action:action) =>{ switch (action.type) { case "ADD": return [...state, ...[action.add]]; default: return state; } }

— यीशु

Answer 1

राज्य को और अधिक मजबूती से टाइप करने की आवश्यकता है। यह आपकी प्रारंभिक अवस्था को टाइप से टाइप anyकरने की कोशिश कर रहा है never।

डेटा के लिए डिफ़ॉल्ट स्थिति बनाते समय आपको अपने राज्य के लिए एक इंटरफ़ेस परिभाषित करना चाहिए, यहाँ एक टूडू सूची सरणी के लिए एक उदाहरण दिया गया है:

interface IAppState {
  toDoList: any[];
}
const initialState: IAppState = {
  toDoList: []
};

export default function reducer(state = initialState, action) {}