fat arrow support in seneca 1.0, via msg.meta$.seneca

[rjrodger]

The problem is that the this reference is not correct when using => (it's not the current seneca context).

Instead, provide it via the meta$ message property:

seneca.add( 'foo:1', (msg, done) => { msg.meta$.seneca.prior( ... ) })

[geek]

After further thought, I am going to add the instance to the callback function. The reason for this is that the meta$ object should be serializable, plus its a reserved property.

const Seneca = require('seneca');

const seneca = Seneca();
seneca.add('foo: 1', (msg, reply) => { 
  reply.seneca.act('foo: 2', function (err, result) {
    reply(err, result + 2);
  });
}); 

When trying to add seneca to meta$ there was an error trying to serialize the instance in the gate executor.

[mcollina]

Following chairo:

const Seneca = require('seneca');

const seneca = Seneca();
seneca.add('foo: 1', (msg, reply) => { 
  reply.act('foo: 2', function (err, result) {
    reply(err, result + 2);
  });
});

seneca.add('foo: 2', (msg, reply) => { 
  reply.act('foo: 3'); // meaningless, but helpful
}); 

[rjrodger]

Ah good catch! Agreed

[mcdonnelldean]

Damn, I JUST came here to raise this point! As you were...