debug.logWhatChangesMe(observable, [key])

Logs what affects the observable. If a key is provided, logs what affects the key of the observable.

The following example uses DefineMap to create a Person type with a fullName property that derives its value from first and last. Then it calls logWhatChangesMe to log what affects the fullName property of the me Person instance:

import debug from "can-debug";

const Person = DefineMap.extend( "Person", {
    first: "string",
    last: "string",
    fullName: {
        get() {
            return `${this.first} ${this.last}`;
        }
    }
} );

const me = new Person( { first: "John", last: "Doe" } );
debug.logWhatChangesMe( me, "fullName" );

Calling logWhatChangesMe prints out the following message to the browser's console: