I am getting an error while publishing message from one web Component: [error = TypeError: Cannot convert a Symbol value to a string at], it occurs while receiving MessageContext using @wire(MessageContext) mContext;

console says mContext value = Symbol(MessageContext_43ee57fb_fbb4_4cf1_bd78_c45358de67cd)

The sforce.one is not working. This is because of not executing in lightning experience.

Any hints to patch it up for classic experience ?

Sorry David, I am not sure about that and also couldn’t find anything on this, its still in developer preview.

What about SESSION scope or something like that??

Yes. Its APPLICATION.

Do you know which possible values exist??

I just copied your examples because I need communication between Aura and LWC.
When I try to subscribe the LWC to the message I´m getting an error in the next line:

…
messageService.subscribe(this.context, lmsDemoMC, function (event)
…

when I debug it I´m accessing to:

…
function runWithBoundaryProtection(vm, owner, pre, job, post) {
{
assert.isTrue(vm && ‘cmpRoot’ in vm, `${vm} is not a vm.`);
}

let error;
pre();

try {
job();
} catch (e) {
error = Object(e);
}
…

but the excetion value is:
JSON.stringify(e): “{}”

Any idea?

BTW, with both components I´m able to publish messages.
In the other hand is that the aura component I needed to add the scope:

Do you know which other scopes are supported?

Thanks in advance

Have asked this particular requirement related to OpenCTI in multiple channels. dlouvton from salesforce suggested to use OpenCTI lighting message Service( https://github.com/developerforce/open-cti-demo-adapter/issues/37).

Requirement: Have to make a call from a quick Action but not on clicking phone number.

Challenges:

1) Don’t have any similar method like sendCTIMessage() in lighting which works well in classic.
2) Though I have a hack, we can’t simply raise an onClickToDial event in Lighting aura/Web Components. And VF page in lighting won’t work as VF renders in iframe and end of the day VF renders in Lighting Experience.
3) My OpenCTI adapter URL in call center is not our SFDC page instead it is a Twilio-Flex(3rd party vendor) URL so I don’t have a any DIRECT control to add the subscribe() code. And this Twilio-Flex is implemented in react.js and I do have a little control where I can add some plugins to this URL. In this plugin I can add Salesforce openCTI_min.js script and use the subscribe() method.

Options I left with:
Using this Lighting Message Service for OopenCTI( https://developer.salesforce.com/docs/atlas.en-us.api_cti.meta/api_cti/sforce_api_cti_methods_intro_lightning.htm ). I wanted to publish() a message in my aura/LWC and would like to have this message needed to subscribe() by Twilio-Flex soft-phone which is in same DOM but in react.Js. Can we achieve this using LMS? More specifically, how to configure/get Salesforce Message channel stuff into Flex react.js page though these both are in same DOM.?

If you are interested, I can provide you the sample code snippets about react.js plugin and little hack (point# 2). But https://github.com/developerforce/open-cti-demo-adapter/issues/37 has most of the requirement what I am talking about.

Thank you!
Charan