refactor(migrations): expose angular compiler options to signal input migration (#57347)

Instead of exposing just the `ts.CompilerOptions`, we should expose the
actual Angular compiler options throuhgout the signal input migration.

This will be useful for parsing templates, in cases of JIT-opted
components.

PR Close #57347

packages/core/schematics/migrations/signal-migration/src/BUILD.bazel

@@ -17,6 +17,7 @@ ts_library(
         "//packages/compiler-cli/src/ngtsc/annotations/common",
         "//packages/compiler-cli/src/ngtsc/annotations/directive",
         "//packages/compiler-cli/src/ngtsc/core",
+        "//packages/compiler-cli/src/ngtsc/core:api",
         "//packages/compiler-cli/src/ngtsc/diagnostics",
         "//packages/compiler-cli/src/ngtsc/file_system",
         "//packages/compiler-cli/src/ngtsc/imports",

packages/core/schematics/migrations/signal-migration/src/convert-input/convert_to_signal.ts

@@ -55,7 +55,7 @@ export function convertToSignalInput(
   }
 
   const strictPropertyInitialization =
-    !!host.tsOptions.strict || !!host.tsOptions.strictPropertyInitialization;
+    !!host.options.strict || !!host.options.strictPropertyInitialization;
   const inputArgs: ts.Expression[] = [];
   const typeArguments: ts.TypeNode[] = [];
 

packages/core/schematics/migrations/signal-migration/src/migration_host.ts

@@ -8,6 +8,7 @@
 
 import path from 'path';
 import ts from 'typescript';
+import {NgCompilerOptions} from '../../../../../compiler-cli/src/ngtsc/core/api';
 
 /**
  * A migration host is in practice a container object that
@@ -20,7 +21,7 @@ export class MigrationHost {
   constructor(
     public projectDir: string,
     public isMigratingCore: boolean,
-    public tsOptions: ts.CompilerOptions,
+    public options: NgCompilerOptions,
     sourceFiles: readonly ts.SourceFile[],
   ) {
     this._sourceFiles = new WeakSet(sourceFiles);