*: ensure exhaustiveness on switches

discojs/discojs-core/src/aggregator/base.ts

@@ -119,16 +119,21 @@ export abstract class Base<T> {
     switch (step) {
       case AggregationStep.ADD:
         console.log(`> Adding contribution from node ${from ?? '"unknown"'} for round (${this.communicationRound}, ${this.round})`)
-        return
+        break
       case AggregationStep.UPDATE:
         if (from === undefined) {
           return
         }
         console.log(`> Updating contribution from node ${from} for round (${this.communicationRound}, ${this.round})`)
-        return
+        break
       case AggregationStep.AGGREGATE:
         console.log('*'.repeat(80))
         console.log(`Buffer is full. Aggregating weights for round (${this.communicationRound}, ${this.round})\n`)
+        break
+      default: {
+        const _: never = step
+        throw new Error('should never happen')
+      }
     }
   }
 

discojs/discojs-core/src/models/gpt/config.ts

@@ -73,5 +73,9 @@ export function getModelSizes (modelType: ModelType): Required<ModelSize> {
       return { nLayer: 4, nHead: 4, nEmbd: 128 }
     case 'gpt-nano':
       return { nLayer: 3, nHead: 3, nEmbd: 48 }
+    default: {
+      const _: never = modelType
+      throw new Error("should never happen")
+    }
   }
 }

discojs/discojs-core/src/training/disco.ts

@@ -56,6 +56,10 @@ export class Disco {
         case 'local':
           options.client = new clients.Local(options.url, task, options.aggregator)
           break
+        default: {
+          const _: never = options.scheme
+          throw new Error('should never happen')
+        }
       }
     }
     if (options.informant === undefined) {
@@ -69,6 +73,10 @@ export class Disco {
         case 'local':
           options.informant = new informants.LocalInformant(task)
           break
+        default: {
+          const _: never = options.scheme
+          throw new Error('should never happen')
+        }
       }
     }
     if (options.logger === undefined) {

server/src/router/decentralized/server.ts

@@ -120,6 +120,10 @@ export class Decentralized extends Server {
             }
             break
           }
+          default: {
+            const _: never = msg
+            throw new Error('should never happen')
+          }
         }
       } catch (e) {
         console.error('when processing WebSocket message:', e)

web-client/src/clients.ts

@@ -12,5 +12,10 @@ export function getClient (trainingScheme: Required<Task['trainingInformation'][
       return new clients.federated.FederatedClient(CONFIG.serverUrl, task, aggregator)
     case 'local':
       return new clients.Local(CONFIG.serverUrl, task, aggregator)
+    default: {
+      // eslint-disable-next-line no-unused-vars
+      const _: never = trainingScheme
+      throw new Error('should never happen')
+    }
   }
 }

web-client/src/components/training/Trainer.vue

@@ -131,6 +131,11 @@ export default defineComponent({
         case 'local':
           this.trainingInformant = new informant.LocalInformant(...args)
           break
+        default: {
+          // eslint-disable-next-line no-unused-vars
+          const _: never = newScheme
+          throw new Error('should never happen')
+        }
       }
     }
   },