v5.1.0

Breaking changes

1. In v5 all the deprecated v4 creator functions are available under deprecated named import to help with incremental migration.

// before
import { createAction, createStandardAction, createCustomAction } from "typesafe-actions"

// after
import { deprecated } from "typesafe-actions"
const { createAction, createStandardAction, createCustomAction } = deprecated;

2. createStandardAction was renamed to createAction and .map method was removed in favor of simpler redux-actions style API.

// before
const withMappedPayloadAndMeta = createStandardAction(
  'CREATE_STANDARD_ACTION'
).map(({ username, message }: Notification) => ({
  payload: `${username}: ${message}`,
  meta: { username, message },
}));

// after
const withMappedPayloadAndMeta = createAction(
  'CREATE_STANDARD_ACTION',
  ({ username, message }: Notification) => `${username}: ${message}`, // payload creator
  ({ username, message }: Notification) => ({ username, message }) // meta creator
)();

3. v4 version of createAction was removed. I suggest to refactor to use a new createAction as in point 2, which was simplified and extended to support redux-actions style API.

// before
const withPayloadAndMeta = createAction('CREATE_ACTION', resolve => {
  return (id: number, token: string) => resolve(id, token);
});

// after
const withPayloadAndMeta = createAction(
  'CREATE_ACTION',
  (id: number, token: string) => id, // payload creator
  (id: number, token: string) => token // meta creator
})();

4. createCustomAction - API was greatly simplified, now it's used like this:

// before
const add = createCustomAction('CUSTOM', type => {
  return (first: number, second: number) => ({ type, customProp1: first, customProp2: second });
});

// after
const add = createCustomAction(
  'CUSTOM',
  (first: number, second: number) => ({ customProp1: first, customProp2: second })
);

5. AsyncActionCreator should be just renamed to AsyncActionCreatorBuilder.

// before
import { AsyncActionCreator } from "typesafe-actions"

//after
import { AsyncActionCreatorBuilder } from "typesafe-actions"

New

• Rewrite and simplify createAction & createAsyncAction API (#192)

Improvements

• Fixed .npmignore. Fixed #205
• Rollup build improvements (#203)
• Updated AsyncActionCreatorBuilder and AsyncAction types to fix cancel handler type being never (#194)
• Fixed high memory consumption (#171)