refactor(compiler): use TypeScript LanguageService instead of `Prog…

…ram` (#800)

package.json

@@ -35,7 +35,7 @@
   "dependencies": {
     "jest-environment-jsdom": "27.0.0-next.1",
     "pretty-format": "27.0.0-next.1",
-    "ts-jest": "^27.0.0-next.5"
+    "ts-jest": "^27.0.0-next.6"
   },
   "peerDependencies": {
     "@angular-devkit/build-angular": ">=0.901.12",

src/__tests__/__snapshots__/ng-jest-compiler.spec.ts.snap

@@ -1,69 +1,41 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`NgJestCompiler with isolatedModule false should compile codes with useESM true 1`] = `
-"import { __decorate } from \\"tslib\\";
-import __NG_CLI_RESOURCE__0 from \\"./app.component.html\\";
-import { Component } from '@angular/core';
-let AppComponent = class AppComponent {
-    constructor() {
-        this.title = 'test-app-v10';
-    }
-};
-AppComponent = __decorate([
-    Component({
-        selector: 'app-root',
-        template: __NG_CLI_RESOURCE__0,
-        styles: []
-    })
-], AppComponent);
-export { AppComponent };
-//# "
+exports[`NgJestCompiler with isolatedModules false should transform codes with useESM false using hoisting, replace resources and downlevel ctor transformers 1`] = `
+Object {
+  "before": Array [
+    [Function],
+    [Function],
+    [Function],
+  ],
+}
 `;
 
-exports[`NgJestCompiler with isolatedModule false should compile new code when file changes: from hasErrorFileContent 1`] = `
-"\\"use strict\\";
-Object.defineProperty(exports, \\"__esModule\\", { value: true });
-exports.AppComponent = void 0;
-const tslib_1 = require(\\"tslib\\");
-const core_1 = require(\\"@angular/core\\");
-let  = class  {
-    constructor() {
-        this. = ;
-    }
-};
- = tslib_1.__decorate([
-    core_1.Component({
-        selector: 'app-root',
-        template: require(\\"./app.component.html\\"),
-        styles: []
-    })
-], );
-exports.AppComponent = ;
-//# "
+exports[`NgJestCompiler with isolatedModules false should transform codes with useESM true using hoisting, replace resources and downlevel ctor transformers 1`] = `
+Object {
+  "before": Array [
+    [Function],
+    [Function],
+    [Function],
+  ],
+}
 `;
 
-exports[`NgJestCompiler with isolatedModule false should compile new code when file changes: from noErrorFileContent 1`] = `
-"\\"use strict\\";
-Object.defineProperty(exports, \\"__esModule\\", { value: true });
-exports.AppComponent = void 0;
-const tslib_1 = require(\\"tslib\\");
-const core_1 = require(\\"@angular/core\\");
-let AppComponent = class AppComponent {
-    constructor() {
-        this.title = 'test-app-v10';
-    }
-};
-AppComponent = tslib_1.__decorate([
-    core_1.Component({
-        selector: 'app-root',
-        template: require(\\"./app.component.html\\"),
-        styles: []
-    })
-], AppComponent);
-exports.AppComponent = AppComponent;
-//# "
+exports[`NgJestCompiler with isolatedModules true should transform codes with useESM false using hoisting, replace resources and downlevel ctor transformers 1`] = `
+Object {
+  "before": Array [
+    [Function],
+    [Function],
+    [Function],
+  ],
+}
 `;
 
-exports[`NgJestCompiler with isolatedModule false should throw diagnostics error for new file which is: known by Program 1`] = `"src/__tests__/__mocks__/foo.component.ts(8,3): error TS2322: Type 'string' is not assignable to type 'number'."`;
-
-exports[`NgJestCompiler with isolatedModule false should throw diagnostics error for new file which is: not known by Program 1`] = `"src/__tests__/__mocks__/foo.component.ts(8,3): error TS2322: Type 'string' is not assignable to type 'number'."`;
+exports[`NgJestCompiler with isolatedModules true should transform codes with useESM true using hoisting, replace resources and downlevel ctor transformers 1`] = `
+Object {
+  "before": Array [
+    [Function],
+    [Function],
+    [Function],
+  ],
+}
+`;