Since both providers match when creating AWS resources inside your ComponentResource, you need to specify the correct one. You can do this either by removing the "wrong" provider from the

providers

opt, or by passing the "right" one into the

provider

opt.

The

providers

opt only uses specific keys (and I've never seen where those keys are defined), so in theory you could provide both providers via keys that Pulumi doesn't know about, then explicitly update the map based on the resource you're creating.

new MyComponentResource(name, args, { providers: { awsEast1: awsProv1, awsWest2: awsProv2 } });
.....
class MyComponentResource {
  constructor(name, args, opts) {
    ...
    new ResourceInEast1(name1, args1, { ...opts, providers: { ...opts.providers, aws: opts.providers.awsEast1 } });
    new ResourceInWest2(name2, args2, { ...opts, providers: { ...opts.providers, aws: opts.providers.awsWest2 } });

(Utterly untested, that's completely a guess...)