64 lines
2.2 KiB
JavaScript
64 lines
2.2 KiB
JavaScript
|
/**
|
||
|
* Emits events on registered observers for the provided type and passes along
|
||
|
* the provided data.
|
||
|
*
|
||
|
* This event emitter will silently catch promise errors, but doesn't care
|
||
|
* otherwise if any errors are caused by observers. So events that do care
|
||
|
* should use `emitEventWithAbort` instead.
|
||
|
*
|
||
|
* @param {Object} observers The registered observers to omit to.
|
||
|
* @param {string} eventType The event type being emitted.
|
||
|
* @param {*} data Data passed along to the observer when it is
|
||
|
* invoked.
|
||
|
*
|
||
|
* @return {Promise} A promise that resolves to true after all observers have
|
||
|
* executed.
|
||
|
*/
|
||
|
export const emitEvent = async ( observers, eventType, data ) => {
|
||
|
const observersByType = observers[ eventType ] || [];
|
||
|
for ( let i = 0; i < observersByType.length; i++ ) {
|
||
|
try {
|
||
|
await Promise.resolve( observersByType[ i ]( data ) );
|
||
|
} catch ( e ) {
|
||
|
// we don't care about errors blocking execution, but will
|
||
|
// console.error for troubleshooting.
|
||
|
// eslint-disable-next-line no-console
|
||
|
console.error( e );
|
||
|
}
|
||
|
}
|
||
|
return true;
|
||
|
};
|
||
|
|
||
|
/**
|
||
|
* Emits events on registered observers for the provided type and passes along
|
||
|
* the provided data. This event emitter will abort and return any value from
|
||
|
* observers that do not return true.
|
||
|
*
|
||
|
* @param {Object} observers The registered observers to omit to.
|
||
|
* @param {string} eventType The event type being emitted.
|
||
|
* @param {*} data Data passed along to the observer when it is
|
||
|
* invoked.
|
||
|
*
|
||
|
* @return {Promise} Returns a promise that resolves to either boolean or the
|
||
|
* return value of the aborted observer.
|
||
|
*/
|
||
|
export const emitEventWithAbort = async ( observers, eventType, data ) => {
|
||
|
const observersByType = observers[ eventType ] || [];
|
||
|
for ( let i = 0; i < observersByType.length; i++ ) {
|
||
|
try {
|
||
|
const response = await Promise.resolve(
|
||
|
observersByType[ i ]( data )
|
||
|
);
|
||
|
if ( response !== true ) {
|
||
|
return response;
|
||
|
}
|
||
|
} catch ( e ) {
|
||
|
// we don't handle thrown errors but just console.log for
|
||
|
// troubleshooting
|
||
|
// eslint-disable-next-line no-console
|
||
|
console.error( e );
|
||
|
}
|
||
|
}
|
||
|
return true;
|
||
|
};
|