Redux thunk源码

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1 redux-thunk源码

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'use strict';
exports.__esModule = true;
function createThunkMiddleware(extraArgument) {
  return function (_ref) {
    var dispatch = _ref.dispatch,
        getState = _ref.getState;
    return function (next) {
      return function (action) {
        if (typeof action === 'function') {
          return action(dispatch, getState, extraArgument);
        }
        return next(action);
      };
    };
  };
}
var thunk = createThunkMiddleware();
thunk.withExtraArgument = createThunkMiddleware;
exports['default'] = thunk;

什么是thunk

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// Meet thunks.
// A thunk is a function that returns a function.
// This is a thunk.

redux-thunk