feat(compiler-cli): add watch mode to ngc (#18818)

With this change ngc now accepts a `-w` or a `--watch`
command-line option that will automatically perform a
recompile whenever any source files change on disk.

PR Close #18818

packages/compiler-cli/test/diagnostics/check_types_spec.ts

@@ -39,12 +39,13 @@ describe('ng type checker', () => {
     if (!diagnostics || !diagnostics.length) {
       throw new Error('Expected a diagnostic erorr message');
     } else {
-      const matches: (d: Diagnostic) => boolean =
-          typeof message === 'string' ? d => d.message == message : d => message.test(d.message);
+      const matches: (d: Diagnostic) => boolean = typeof message === 'string' ?
+          d => d.messageText == message :
+          d => message.test(d.messageText);
       const matchingDiagnostics = diagnostics.filter(matches);
       if (!matchingDiagnostics || !matchingDiagnostics.length) {
         throw new Error(
-            `Expected a diagnostics matching ${message}, received\n  ${diagnostics.map(d => d.message).join('\n  ')}`);
+            `Expected a diagnostics matching ${message}, received\n  ${diagnostics.map(d => d.messageText).join('\n  ')}`);
       }
     }
   }
@@ -173,6 +174,6 @@ const LOWERING_QUICKSTART: MockDirectory = {
 
 function expectNoDiagnostics(diagnostics: Diagnostic[]) {
   if (diagnostics && diagnostics.length) {
-    throw new Error(diagnostics.map(d => `${d.span}: ${d.message}`).join('\n'));
+    throw new Error(diagnostics.map(d => `${d.span}: ${d.messageText}`).join('\n'));
   }
 }

packages/compiler-cli/test/diagnostics/mocks.ts

@@ -191,7 +191,7 @@ export class DiagnosticContext {
           analyzeHost);
 
       analyzedModules = this._analyzedModules =
-          analyzeNgModules(programSymbols, analyzeHost, this.resolver);
+          analyzeNgModules(programSymbols, analyzeHost, this.staticSymbolResolver, this.resolver);
     }
     return analyzedModules;
   }