mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/Popups
synced 2024-12-22 20:12:46 +00:00
e6081106f1
Why: Because they are the approved standard by TC39 and Ecma for
JavaScript modules.
Changes:
* Wrap mw-node-qunit in run.js to register babel to transpile modules
for node v6
* Change all sources in src/ to use ES modules
* Change constants.js to be able to run without
jQuery.bracketedDevicePixelRatio given ES modules are hoisted to
the top by spec so we can't patch globals before importing it
* Change all tests in tests/node-qunit/ to use ES modules
* Drop usage of mock-require given ES modules are easy to stub with
sinon
Additional changes:
* Rename tests/node-qunit/renderer.js to renderer.test.js to follow
the convention of all the other files
* Make npm run test:node run only .test.js test files so that it
doesn't run the stubs.js or run.js file.
Bug: T171951
Change-Id: I17a0b76041d5e2fd18e2d54950d9d7c0db99a941
43 lines
1.2 KiB
JavaScript
43 lines
1.2 KiB
JavaScript
/**
|
|
* @module changeListener
|
|
*/
|
|
|
|
/**
|
|
* @typedef {Function} ext.popups.ChangeListener
|
|
* @param {Object} prevState The previous state
|
|
* @param {Object} state The current state
|
|
*/
|
|
|
|
/**
|
|
* Registers a change listener, which is bound to the
|
|
* [store](http://redux.js.org/docs/api/Store.html).
|
|
*
|
|
* A change listener is a function that is only invoked when the state in the
|
|
* [store](http://redux.js.org/docs/api/Store.html) changes. N.B. that there
|
|
* may not be a 1:1 correspondence with actions being dispatched to the store
|
|
* and the state in the store changing.
|
|
*
|
|
* See [Store#subscribe](http://redux.js.org/docs/api/Store.html#subscribe)
|
|
* for more information about what change listeners may and may not do.
|
|
*
|
|
* @param {Redux.Store} store
|
|
* @param {ext.popups.ChangeListener} callback
|
|
*/
|
|
export default function registerChangeListener( store, callback ) {
|
|
// This function is based on the example in [the documentation for
|
|
// Store#subscribe](http://redux.js.org/docs/api/Store.html#subscribe),
|
|
// which was written by Dan Abramov.
|
|
|
|
var state;
|
|
|
|
store.subscribe( function () {
|
|
var prevState = state;
|
|
|
|
state = store.getState();
|
|
|
|
if ( prevState !== state ) {
|
|
callback( prevState, state );
|
|
}
|
|
} );
|
|
}
|