How do I use Promise.all() with chrome.storage()?

I have several async functions running. I want to wait for them all to finish before taking the next steps. Here's my code that I'm using to get all of the key/values from chrome.storage and the Promise.all() implementation.

var promise1 = Promise.resolve(3);

var promise2 = 42;

var promise3 = new Promise(function(resolve, reject) {

  setTimeout(resolve, 100, 'foo');

});



var getAll = chrome.storage.sync.get(function(result) {

  console.log(result)

});



Promise.all([promise1, promise2, promise3, getAll]).then(function(values) {

  console.log(values); // [3, 42, "foo", undefined]

});

This doesn't work unfortunately. It returns undefined.

Most of the code above is taken from MDN here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/all

edited Apr 16 '18 at 0:02

asked Apr 15 '18 at 23:51

jkupczak

92862144

chrome.storage.sync.get doesn't return anything as you can see in the documentation. The simplest solution is to use Mozilla WebExtension polyfill.

– wOxxOm
Apr 16 '18 at 4:11

add a comment |

var promise1 = Promise.resolve(3);

var promise2 = 42;

var promise3 = new Promise(function(resolve, reject) {

  setTimeout(resolve, 100, 'foo');

});



var getAll = chrome.storage.sync.get(function(result) {

  console.log(result)

});



Promise.all([promise1, promise2, promise3, getAll]).then(function(values) {

  console.log(values); // [3, 42, "foo", undefined]

});

This doesn't work unfortunately. It returns undefined.

Most of the code above is taken from MDN here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/all

edited Apr 16 '18 at 0:02

asked Apr 15 '18 at 23:51

jkupczak

92862144

chrome.storage.sync.get doesn't return anything as you can see in the documentation. The simplest solution is to use Mozilla WebExtension polyfill.

– wOxxOm
Apr 16 '18 at 4:11

add a comment |

var promise1 = Promise.resolve(3);

var promise2 = 42;

var promise3 = new Promise(function(resolve, reject) {

  setTimeout(resolve, 100, 'foo');

});



var getAll = chrome.storage.sync.get(function(result) {

  console.log(result)

});



Promise.all([promise1, promise2, promise3, getAll]).then(function(values) {

  console.log(values); // [3, 42, "foo", undefined]

});

This doesn't work unfortunately. It returns undefined.

Most of the code above is taken from MDN here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/all

edited Apr 16 '18 at 0:02

asked Apr 15 '18 at 23:51

jkupczak

92862144

var promise1 = Promise.resolve(3);

var promise2 = 42;

var promise3 = new Promise(function(resolve, reject) {

  setTimeout(resolve, 100, 'foo');

});



var getAll = chrome.storage.sync.get(function(result) {

  console.log(result)

});



Promise.all([promise1, promise2, promise3, getAll]).then(function(values) {

  console.log(values); // [3, 42, "foo", undefined]

});

This doesn't work unfortunately. It returns undefined.

Most of the code above is taken from MDN here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise/all

asynchronous google-chrome-extension es6-promise google-chrome-storage

edited Apr 16 '18 at 0:02

asked Apr 15 '18 at 23:51

jkupczak

92862144

edited Apr 16 '18 at 0:02

asked Apr 15 '18 at 23:51

jkupczak

92862144

edited Apr 16 '18 at 0:02

asked Apr 15 '18 at 23:51

jkupczak

92862144

asked Apr 15 '18 at 23:51

jkupczak

92862144

asked Apr 15 '18 at 23:51

jkupczak

92862144

chrome.storage.sync.get doesn't return anything as you can see in the documentation. The simplest solution is to use Mozilla WebExtension polyfill.

– wOxxOm
Apr 16 '18 at 4:11

add a comment |

chrome.storage.sync.get doesn't return anything as you can see in the documentation. The simplest solution is to use Mozilla WebExtension polyfill.

– wOxxOm
Apr 16 '18 at 4:11

chrome.storage.sync.get doesn't return anything as you can see in the documentation. The simplest solution is to use Mozilla WebExtension polyfill.

– wOxxOm
Apr 16 '18 at 4:11

add a comment |

1 Answer
1

active

oldest

votes

The chrome.* API does not support promises, it uses async callbacks.

But you can promisify your call to chrome.storage.sync.get:

var getAllPromise = (function() {

    return new Promise(function(resolve) {

        chrome.storage.sync.get(function(result) {

            resolve(result);

        });

    });

})();



Promise.all([getAllPromise]).then(...);

edited Nov 23 '18 at 3:15

answered Apr 16 '18 at 18:41

Deliaz

1,60411123

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

The chrome.* API does not support promises, it uses async callbacks.

But you can promisify your call to chrome.storage.sync.get:

var getAllPromise = (function() {

    return new Promise(function(resolve) {

        chrome.storage.sync.get(function(result) {

            resolve(result);

        });

    });

})();



Promise.all([getAllPromise]).then(...);

edited Nov 23 '18 at 3:15

answered Apr 16 '18 at 18:41

Deliaz

1,60411123

add a comment |

The chrome.* API does not support promises, it uses async callbacks.

But you can promisify your call to chrome.storage.sync.get:

var getAllPromise = (function() {

    return new Promise(function(resolve) {

        chrome.storage.sync.get(function(result) {

            resolve(result);

        });

    });

})();



Promise.all([getAllPromise]).then(...);

edited Nov 23 '18 at 3:15

answered Apr 16 '18 at 18:41

Deliaz

1,60411123

add a comment |

The chrome.* API does not support promises, it uses async callbacks.

But you can promisify your call to chrome.storage.sync.get:

var getAllPromise = (function() {

    return new Promise(function(resolve) {

        chrome.storage.sync.get(function(result) {

            resolve(result);

        });

    });

})();



Promise.all([getAllPromise]).then(...);

edited Nov 23 '18 at 3:15

answered Apr 16 '18 at 18:41

Deliaz

1,60411123

The chrome.* API does not support promises, it uses async callbacks.

But you can promisify your call to chrome.storage.sync.get:

var getAllPromise = (function() {

    return new Promise(function(resolve) {

        chrome.storage.sync.get(function(result) {

            resolve(result);

        });

    });

})();



Promise.all([getAllPromise]).then(...);

edited Nov 23 '18 at 3:15

answered Apr 16 '18 at 18:41

Deliaz

1,60411123

edited Nov 23 '18 at 3:15

answered Apr 16 '18 at 18:41

Deliaz

1,60411123

answered Apr 16 '18 at 18:41

Deliaz

1,60411123

answered Apr 16 '18 at 18:41

Deliaz

1,60411123

add a comment |

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