fix(@angular-devkit/build-optimizer): remove deprecated testImportTslib

Author: filipesilva

packages/angular_devkit/build_optimizer/src/transforms/import-tslib.ts

@@ -8,15 +8,6 @@
 import * as ts from 'typescript';
 import { getCleanHelperName } from '../helpers/ast-utils';
 
-/**
- * @deprecated From 0.9.0
- */
-export function testImportTslib(content: string) {
-  const regex = /var (__extends|__decorate|__metadata|__param)(\$\d+)? = \(.*\r?\n\s+(.*\r?\n)*\s*\};/;
-
-  return regex.test(content);
-}
-
 /**
  * @deprecated From 0.900.0
  */

packages/angular_devkit/build_optimizer/src/transforms/import-tslib_spec.ts

@@ -8,7 +8,7 @@
 // tslint:disable-next-line:no-implicit-dependencies
 import { tags } from '@angular-devkit/core';
 import { transformJavascript } from '../helpers/transform-javascript';
-import { getImportTslibTransformer, testImportTslib } from './import-tslib';
+import { getImportTslibTransformer } from './import-tslib';
 
 
 const transform = (content: string) => transformJavascript(
@@ -27,7 +27,6 @@ describe('import-tslib', () => {
       import { __extends } from "tslib";
     `;
 
-    expect(testImportTslib(input)).toBeTruthy();
     expect(tags.oneLine`${transform(input)}`).toEqual(tags.oneLine`${output}`);
   });
 
@@ -46,7 +45,6 @@ describe('import-tslib', () => {
       export default function appGlobal() { }
     `;
 
-    expect(testImportTslib(input)).toBeTruthy();
     expect(tags.oneLine`${transform(input)}`).toEqual(tags.oneLine`${output}`);
   });
 
@@ -64,7 +62,6 @@ describe('import-tslib', () => {
       import { __decorate } from "tslib";
     `;
 
-    expect(testImportTslib(input)).toBeTruthy();
     expect(tags.oneLine`${transform(input)}`).toEqual(tags.oneLine`${output}`);
   });
 
@@ -89,7 +86,6 @@ describe('import-tslib', () => {
       import { __decorate as __decorate$2 } from "tslib";
     `;
 
-    expect(testImportTslib(input)).toBeTruthy();
     expect(tags.oneLine`${transform(input)}`).toEqual(tags.oneLine`${output}`);
   });
 
@@ -118,7 +114,6 @@ describe('import-tslib', () => {
       exports.meaning = 42;
     `;
 
-    expect(testImportTslib(input)).toBeTruthy();
     expect(tags.oneLine`${transform(input)}`).toEqual(tags.oneLine`${output}`);
   });
 
@@ -132,7 +127,6 @@ describe('import-tslib', () => {
       import { __metadata } from "tslib";
     `;
 
-    expect(testImportTslib(input)).toBeTruthy();
     expect(tags.oneLine`${transform(input)}`).toEqual(tags.oneLine`${output}`);
   });
 
@@ -147,7 +141,6 @@ describe('import-tslib', () => {
       import { __param } from "tslib";
     `;
 
-    expect(testImportTslib(input)).toBeTruthy();
     expect(tags.oneLine`${transform(input)}`).toEqual(tags.oneLine`${output}`);
   });