fix(schematics): support newer versions of angular

Fixes #1471

Author: mattlewis92

projects/angular-calendar/schematics/ng-add/index.spec.ts

@@ -2,15 +2,18 @@ import {
   SchematicTestRunner,
   UnitTestTree,
 } from '@angular-devkit/schematics/testing';
-import { getWorkspace } from '@schematics/angular/utility/config';
 
 import * as path from 'path';
 import { expect } from 'chai';
 
 import { createTestApp } from '../testing/workspace';
 import { Schema } from './schema';
 import { angularCalendarVersion, momentVersion } from './version-names';
-import { getProjectFromWorkspace, getProjectTargetOptions } from '../utils';
+import {
+  getProjectFromWorkspace,
+  getProjectTargetOptions,
+  getWorkspace,
+} from '../utils';
 
 const collectionPath = path.join(__dirname, '../collection.json');
 

projects/angular-calendar/schematics/ng-add/index.ts

@@ -6,7 +6,6 @@ import {
   chain,
 } from '@angular-devkit/schematics';
 import { NodePackageInstallTask } from '@angular-devkit/schematics/tasks';
-import { getWorkspace } from '@schematics/angular/utility/config';
 import { getAppModulePath } from '@schematics/angular/utility/ng-ast-utils';
 import { insertImport } from '@schematics/angular/utility/ast-utils';
 import { InsertChange } from '@schematics/angular/utility/change';
@@ -25,6 +24,7 @@ import {
   getProjectFromWorkspace,
   insertWildcardImport,
   insertAfterImports,
+  getWorkspace,
 } from '../utils';
 
 import { Schema } from './schema';

projects/angular-calendar/schematics/utils/config.ts

@@ -1,11 +1,10 @@
 import { Tree, SchematicsException } from '@angular-devkit/schematics';
-import { getWorkspace } from '@schematics/angular/utility/config';
 import {
   WorkspaceProject,
   WorkspaceSchema,
 } from '@schematics/angular/utility/workspace-models';
 
-import { getProjectFromWorkspace } from '.';
+import { getProjectFromWorkspace, getWorkspace } from '.';
 
 const ANGULAR_CONFIG_PATH = 'angular.json';
 

projects/angular-calendar/schematics/utils/get-workspace.ts

@@ -0,0 +1,21 @@
+import { JsonParseMode, parseJson } from '@angular-devkit/core';
+import { SchematicsException, Tree } from '@angular-devkit/schematics';
+import { WorkspaceSchema } from '@schematics/angular/utility/workspace-models';
+
+export function getWorkspacePath(host: Tree): string {
+  const possibleFiles = ['/angular.json', '/.angular.json'];
+  const path = possibleFiles.filter((file) => host.exists(file))[0];
+
+  return path;
+}
+
+export function getWorkspace(host: Tree): WorkspaceSchema {
+  const path = getWorkspacePath(host);
+  const configBuffer = host.read(path);
+  if (configBuffer === null) {
+    throw new SchematicsException(`Could not find (${path})`);
+  }
+  const content = configBuffer.toString();
+
+  return (parseJson(content, JsonParseMode.Loose) as {}) as WorkspaceSchema;
+}

projects/angular-calendar/schematics/utils/index.ts

@@ -4,3 +4,4 @@ export * from './file';
 export * from './get-project';
 export * from './project-main-file';
 export * from './project-targets';
+export * from './get-workspace';