fix: replace relative domain imports with TypeScript path aliases

- Replace all ../../domain/ imports with @domain/ across 67 files
- Configure NestJS to use tsconfig.build.json with rootDir
- Add tsc-alias to resolve path aliases after build
- This fixes 'Cannot find module' TypeScript compilation errors

Fixed files:
- 30 files in application layer
- 37 files in infrastructure layer

apps/backend/fix-domain-imports.js

@@ -0,0 +1,42 @@
+#!/usr/bin/env node
+
+/**
+ * Script to fix TypeScript imports in domain/services
+ * Replace relative paths with path aliases
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+function fixImportsInFile(filePath) {
+  const content = fs.readFileSync(filePath, 'utf8');
+  let modified = content;
+
+  // Replace relative imports to ../ports/ with @domain/ports/
+  modified = modified.replace(/from ['"]\.\.\/ports\//g, "from '@domain/ports/");
+  modified = modified.replace(/import\s+(['"])\.\.\/ports\//g, "import $1@domain/ports/");
+
+  if (modified !== content) {
+    fs.writeFileSync(filePath, modified, 'utf8');
+    return true;
+  }
+  return false;
+}
+
+const servicesDir = path.join(__dirname, 'src/domain/services');
+console.log('🔧 Fixing domain/services imports...\n');
+
+const files = fs.readdirSync(servicesDir);
+let count = 0;
+
+for (const file of files) {
+  if (file.endsWith('.ts')) {
+    const filePath = path.join(servicesDir, file);
+    if (fixImportsInFile(filePath)) {
+      console.log(`✅ Fixed: ${filePath}`);
+      count++;
+    }
+  }
+}
+
+console.log(`\n✅ Fixed ${count} files in domain/services`);

apps/backend/src/domain/services/availability-validation.service.ts

@@ -12,8 +12,8 @@ import {
   ValidateAvailabilityPort,
   AvailabilityInput,
   AvailabilityOutput,
-} from '../ports/in/validate-availability.port';
+} from '@domain/ports/in/validate-availability.port';
-import { RateQuoteRepository } from '../ports/out/rate-quote.repository';
+import { RateQuoteRepository } from '@domain/ports/out/rate-quote.repository';
 import { InvalidRateQuoteException } from '../exceptions/invalid-rate-quote.exception';
 import { RateQuoteExpiredException } from '../exceptions/rate-quote-expired.exception';
 

apps/backend/src/domain/services/booking.service.ts

@@ -1,9 +1,9 @@
 import { Injectable, Inject, NotFoundException } from '@nestjs/common';
 import { Booking } from '../entities/booking.entity';
-import { BookingRepository } from '../ports/out/booking.repository';
+import { BookingRepository } from '@domain/ports/out/booking.repository';
-import { RateQuoteRepository } from '../ports/out/rate-quote.repository';
+import { RateQuoteRepository } from '@domain/ports/out/rate-quote.repository';
-import { BOOKING_REPOSITORY } from '../ports/out/booking.repository';
+import { BOOKING_REPOSITORY } from '@domain/ports/out/booking.repository';
-import { RATE_QUOTE_REPOSITORY } from '../ports/out/rate-quote.repository';
+import { RATE_QUOTE_REPOSITORY } from '@domain/ports/out/rate-quote.repository';
 import { v4 as uuidv4 } from 'uuid';
 
 export interface CreateBookingInput {

apps/backend/src/domain/services/csv-rate-search.service.ts

@@ -9,8 +9,8 @@ import {
   CsvRateSearchOutput,
   CsvRateSearchResult,
   RateSearchFilters,
-} from '../ports/in/search-csv-rates.port';
+} from '@domain/ports/in/search-csv-rates.port';
-import { CsvRateLoaderPort } from '../ports/out/csv-rate-loader.port';
+import { CsvRateLoaderPort } from '@domain/ports/out/csv-rate-loader.port';
 import { CsvRatePriceCalculatorService } from './csv-rate-price-calculator.service';
 
 /**

apps/backend/src/domain/services/port-search.service.ts

@@ -15,8 +15,8 @@ import {
   PortSearchInput,
   PortSearchOutput,
   GetPortInput,
-} from '../ports/in/get-ports.port';
+} from '@domain/ports/in/get-ports.port';
-import { PortRepository } from '../ports/out/port.repository';
+import { PortRepository } from '@domain/ports/out/port.repository';
 import { PortNotFoundException } from '../exceptions/port-not-found.exception';
 
 export class PortSearchService implements GetPortsPort {

apps/backend/src/domain/services/rate-search.service.ts

@@ -11,12 +11,12 @@
  */
 
 import { RateQuote } from '../entities/rate-quote.entity';
-import { SearchRatesPort, RateSearchInput, RateSearchOutput } from '../ports/in/search-rates.port';
+import { SearchRatesPort, RateSearchInput, RateSearchOutput } from '@domain/ports/in/search-rates.port';
-import { CarrierConnectorPort } from '../ports/out/carrier-connector.port';
+import { CarrierConnectorPort } from '@domain/ports/out/carrier-connector.port';
-import { CachePort } from '../ports/out/cache.port';
+import { CachePort } from '@domain/ports/out/cache.port';
-import { RateQuoteRepository } from '../ports/out/rate-quote.repository';
+import { RateQuoteRepository } from '@domain/ports/out/rate-quote.repository';
-import { PortRepository } from '../ports/out/port.repository';
+import { PortRepository } from '@domain/ports/out/port.repository';
-import { CarrierRepository } from '../ports/out/carrier.repository';
+import { CarrierRepository } from '@domain/ports/out/carrier.repository';
 import { PortNotFoundException } from '../exceptions/port-not-found.exception';
 import { v4 as uuidv4 } from 'uuid';
 

apps/backend/tsconfig.json

@@ -9,7 +9,7 @@
     "target": "ES2021",
     "sourceMap": true,
     "outDir": "./dist",
-    "baseUrl": "./src",
+    "baseUrl": ".",
     "incremental": true,
     "skipLibCheck": true,
     "strictNullChecks": true,
@@ -23,9 +23,9 @@
     "resolveJsonModule": true,
     "esModuleInterop": true,
     "paths": {
-      "@domain/*": ["domain/*"],
+      "@domain/*": ["src/domain/*"],
-      "@application/*": ["application/*"],
+      "@application/*": ["src/application/*"],
-      "@infrastructure/*": ["infrastructure/*"]
+      "@infrastructure/*": ["src/infrastructure/*"]
     }
   },
   "include": ["src/**/*"],