All files index.ts

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import { call, put as sagaPut } from 'redux-saga/effects';
 
import { Action, GReturnable, IIReturn, rpResolve } from './types';
 
/**
 * Automatically resolves promise of Action.promise
 * @param innerSaga - Generator Function for redux-saga
 */
const promiseHandler = <T extends string, P, R>(
  innerSaga: (args?: P) => IterableIterator<R>
) =>
  function* innerFunction(action: Action<T, P, IIReturn<R>>) {
    try {
      const data: IIReturn<R> = yield call(innerSaga, action.payload);
      if (action.resolve) {
        action.resolve(data);
      }
    } catch (e) {
      if (action.reject) {
        action.reject(e);
      }
    }
  };
 
/**
 * Action Creator
 * @param type Action Type
 */
const actionCreator = <T, P, R>(type: T) => (payload?: P) => {
  let resolve: (value: IIReturn<R>) => void = () => { };
  let reject: (reason?: any) => void = () => { };
  const promise = new Promise<IIReturn<R>>((pResolve, pReject) => {
    resolve = pResolve;
    reject = pReject;
  });
  return {
    type,
    payload,
    promise,
    resolve,
    reject
  };
};
 
export { rpResolve };
 
/**
 * Extract Actions to be used in reducer
 * @example
 * type Actions = ExtractActions<loginAction | logoutAction>
 */
export type ExtractActions<Base> = {
  [Key in keyof Base]: ActionUnion<Base[Key]>
}[keyof Base];
export type ActionUnion<A> = {
  [Key in keyof A]: A[Key] extends (...args: any[]) => any
  ? ReturnType<A[Key]> extends IterableIterator<any>
  ? never
  : ReturnType<A[Key]>
  : never
}[keyof A];
 
/**
 * Generator return value
 * @param t any
 */
export function reg<T>(t: T) {
  return t as GReturnable<T>;
}
 
// Helper types
type invokeSignature<T extends string, P, R> = P extends undefined
  ? {
    (): Action<T, P, IIReturn<R>>;
  }
  : P extends boolean ? {
    (payload: boolean): Action<T, P, IIReturn<R>>;
  } : {
    (payload: P): Action<T, P, IIReturn<R>>;
  };
type handleAction<P, R, H> =
  | (P extends undefined
    ? () => IterableIterator<R>
    : (args: P) => IterableIterator<R>)
  | H;
type actionCreator<T extends string, P, R> = P extends undefined
  ? () => Action<T, P, IIReturn<R>>
  : P extends boolean
  ? (payload: boolean) => Action<T, P, IIReturn<R>>
  : (payload: P) => Action<T, P, IIReturn<R>>;
type actionHandler<T extends string, P, H, R> = H extends undefined
  ? undefined
  : (action: Action<T, P, IIReturn<R>>) => IterableIterator<any>;
 
export function createAction<T extends string>(
  type: T
): {
  (): {
    (): Action<T>;
    TRIGGER: T;
    trigger: () => Action<T>;
  };
  <P = undefined, H = undefined, R = undefined>(
    handleAction?: handleAction<P, R, H>
  ): {
    TRIGGER: T;
    trigger: actionCreator<T, P, R>;
    handleTrigger: actionHandler<T, P, H, R>;
  } & invokeSignature<T, P, R>;
};
export function createAction<T extends string, ST extends string>(
  type: T,
  successType: ST
): {
  (): {
    (): Action<T>;
    TRIGGER: T;
    trigger: () => Action<T>;
    SUCCESS: ST;
    success: () => Action<ST>;
  };
  <
    P = undefined,
    SP = undefined,
    H = undefined,
    R = undefined,
    SH = undefined,
    SR = undefined
    >(
    handleAction?: handleAction<P, R, H>,
    handleSuccess?: handleAction<SP, SR, SH>
  ): {
    TRIGGER: T;
    trigger: actionCreator<T, P, R>;
    handleTrigger: actionHandler<T, P, H, R>;
    SUCCESS: ST;
    success: actionCreator<ST, SP, SR>;
    handleSuccess: actionHandler<ST, SP, SH, SR>;
  } & invokeSignature<T, P, R>;
};
export function createAction<
  T extends string,
  ST extends string,
  FT extends string
>(
  type: T,
  successType: ST,
  failureType: FT
): {
  (): {
    (): Action<T>;
    TRIGGER: T;
    trigger: () => Action<T>;
    SUCCESS: ST;
    success: () => Action<ST>;
    FAILURE: FT;
    failure: () => Action<FT>;
  };
  <
    P = undefined,
    SP = undefined,
    FP = undefined,
    H = undefined,
    R = undefined,
    SH = undefined,
    SR = undefined,
    FH = undefined,
    FR = undefined
    >(
    handleAction?: handleAction<P, R, H>,
    handleSuccess?: handleAction<SP, SR, SH>,
    handleFailure?: handleAction<FP, FR, FH>
  ): {
    TRIGGER: T;
    trigger: actionCreator<T, P, R>;
    handleTrigger: actionHandler<T, P, H, R>;
    SUCCESS: ST;
    success: actionCreator<ST, SP, SR>;
    handleSuccess: actionHandler<ST, SP, SH, SR>;
    FAILURE: FT;
    failure: actionCreator<FT, FP, FR>;
    handleFailure: actionHandler<FT, FP, FH, FR>;
  } & invokeSignature<T, P, R>;
};
export function createAction<
  T extends string,
  ST extends string,
  FT extends string
>(type: T, successType?: ST, failureType?: FT) {
  function actionPayload<P, R, SP, SR, FP, FR>(
    handleTrigger?: (args?: P) => IterableIterator<R>,
    handleSuccess?: (args?: SP) => IterableIterator<SR>,
    handleFailure?: (args?: FP) => IterableIterator<FR>
  ) {
    // handler return
    const routine = (payload?: P) => {
      let resolve: (value: IIReturn<R>) => void = () => { };
      let reject: (reason?: any) => void = () => { };
      const promise = new Promise<IIReturn<R>>((pResolve, pReject) => {
        resolve = pResolve;
        reject = pReject;
      });
      return {
        type,
        payload,
        promise,
        resolve,
        reject
      };
    };
    routine.TRIGGER = type;
    routine.trigger = actionCreator<T, P, R>(type);
    if (handleTrigger) {
      routine.handleTrigger = promiseHandler<T, P, R>(handleTrigger);
    }
 
    if (successType) {
      routine.SUCCESS = successType;
      routine.success = actionCreator<ST, SP, SR>(successType);
      if (handleSuccess) {
        routine.handleSuccess = promiseHandler<ST, SP, SR>(handleSuccess);
      }
    }
 
    if (failureType) {
      routine.FAILURE = failureType;
      routine.failure = actionCreator<FT, FP, FR>(failureType);
      if (handleFailure) {
        routine.handleFailure = promiseHandler<FT, FP, FR>(handleFailure);
      }
    }
 
    return routine;
  }
  return actionPayload;
}
 
/**
 * transform return type of redux-saga's put to any
 * @param action Action
 */
interface Iput {
  test: any;
}
export const put = (action: Ia) => (sagaPut(action) as unknown) as Iput;
interface Ia {
  type: string;
  payload?: any;
  [key: string]: any;
}