fix: Import progress (#101)

jest.config.js

@@ -11,10 +11,10 @@ export default {
   coverageReporters: ['json-summary', 'text'],
   coverageThreshold: {
     global: {
-      lines: 70.9,
-      statements: 71.01,
+      lines: 70.65,
+      statements: 70.77,
       branches: 66.66,
-      functions: 76.59,
+      functions: 76.05,
     },
   },
   transform: {

src/pipeline.ts

@@ -222,7 +222,7 @@ class Pipeline {
         );
         resolve();
       });
-      this.monitorImport(stage, progress);
+      this.monitorImport(stage);
       try {
         stage.run();
       } catch (e) {
@@ -249,29 +249,34 @@ class Pipeline {
     );
   }
 
-  private monitorImport(stage: Stage, progress: Progress) {
-    let importStartTime: number;
+  private monitorImport(stage: Stage) {
+    let progress: Progress;
 
     stage.on('importStart', () => {
-      progress.start('Importing data to SPARQL store');
-      importStartTime = performance.now();
+      progress = new Progress({silent: this.opts?.silent === true}).start(
+        'Importing data to SPARQL store'
+      );
     });
     stage.on('imported', numOfTriples => {
       progress.text(
         `Importing data to SPARQL store\n\n  Statements: ${millify(
           numOfTriples
-        )}\n  Duration: ${formatDuration(importStartTime, performance.now())} `
+        )}\n  Duration: ${formatDuration(progress.startTime, performance.now())} `
       );
     });
     stage.on('importSuccess', numOfTriples => {
       progress.succeed(
         `Imported ${millify(
           numOfTriples
         )} statements to SPARQL store (took ${prettyMilliseconds(
-          performance.now() - importStartTime
+          performance.now() - progress.startTime
         )})`
       );
     });
+    stage.on('importError', e => {
+      progress?.fail('Import failed');
+      this.error(e);
+    });
   }
 
   private async writeResult(): Promise<void> {

src/stage.ts

@@ -23,6 +23,7 @@ interface Events {
   end: [iteratorCount: number, statements: number];
   iteratorResult: [$this: NamedNode, quadsGenerated: number];
   error: [Error];
+  importError: [Error];
 }
 
 export default class Stage extends EventEmitter<Events> {
@@ -105,7 +106,7 @@ export default class Stage extends EventEmitter<Events> {
       try {
         await this.importer.run();
       } catch (e) {
-        this.emit('error', e as Error);
+        this.emit('importError', e as Error);
         return;
       }
     }