allResolved

allResolved.js

export default function( promises ) {
    var caught_promises = promises.map( function( promise ) {
        return promise.catch( function() {} );
    } );
    return Promise.all( caught_promises );
};

test.js

import allResolved from './allResolved';

var a = new Promise( function( resolve, reject ) {
    reject( new Error( 'a' ) );
} );

var b = new Promise( function( resolve, reject ) {
    resolve( 'b' );
} );

allResolved( [ a, b ] )
    .then( function( result ) {
        console.log( 'result:', result );
    } );
// [ undefined, 'b' ]