DexieError

since v.1.3.3

class DexieError extends Error {}

Acts as the base class for exceptions that can be returned in rejected Dexie promises.

Inheritance Hierarchy

Error

Sample

doSomeDatabaseWork().then(function(){
    //
    // Success
    //
}).catch('ModifyError', function (e) {
    //
    // Failed with ModifyError. Check out e.failures
    //
    console.error ("ModifyError occurred: " + e.failures.length + " failures"); +
}).catch('ConstraintError', function (e) {
    //
    // Failed with ConstraintError
    //
    console.error ("Error: " + e.message);
}).catch(function (e) {
    //
    // Other error such as a string was thrown
    //
    console.error ("Other unknown error caught: " + e);
});

Sample: switch(error.name)

doSomeDatabaseWork().then(function(){
    // Success
}).catch(function (error) {
    switch (error.name) {
        case "UpgradeError": // or case Dexie.errnames.Upgrade: ...
            console.error ("Upgrade error");
            break;
        case "ModifyError": // or case Dexie.errnames.Modify: ...
            console.error ("Modify error");
            break;
        case ...

        default:
            console.error ("error: " + e);
    }
});

Properties

name: string	Name of the error
message: string	Detailed message
inner?: any	Inner exception instance (if any)
stack?: string	Can be present if the error was thrown. If signaled, there wont be any call stack.

Catching Errors Affect Transaction

If explicitly catching an error, the ongoing transaction will NOT abort. If that is not your desire, for example if you are just catching the error for logging purpose, you should rethrow the error after logging it.

The catch effect also applies when using yield or async / await and a standard try..catch.

Sample of rethrowing error

db.transaction('rw', db.friends, function() {
    db.friends.add({id: 1, name: "Orvar", age: 3}).catch(function (e) {
        console.error ("Could not add Orvar");
        throw e; // Rethrowing so that transaction is indeed aborted.
    });
});

// Or with yield
db.transaction('rw', db.friends, function*() {
    try {
        yield db.friends.add({id: 1, name: "Orvar", age: 3});
    } catch (e) {
        console.error ("Could not add Orvar");
        throw e; // Rethrowing so that transaction is indeed aborted.
    });
});

Dexie.js Docs