Missing resources

[rustyconover]

Hi AssetGraph experts,

It seems that building an AssetGraph fails if some of the resources can't be loaded. The exceptions just bubble up.

I have a use case where building a graph even when there are missing resources. If I'm using AssetGraph to archive a collection of linked assets, it may be perfectly acceptable to have 404 errors for assets, it may be useful to be able to default an asset's content in the case of 404 or some other error when retrieving the asset.

Would you be interested in a pull request for this new behavior?

Rusty

[papandreou]

Hey Rusty! I'm guessing that you're running into some warnings that get "promoted" to errors here because you don't have a listener for the warn event:

assetgraph/lib/AssetGraph.js

Lines 167 to 168 in c6dfdea

	if (this.listeners('warn').length > 0) {
	this.emit('warn', err);

Does adding assetGraphInstance.on('warn', err => { /* ... */ }); do what you need?