feat(core): export a function returning a normalized workspace config

Storybook expects the format of workspace.json to match angular.json. This is not the case.
Storybook now will read the workspace.json file using the new function. This will allow us to manage
the new formats.

ISSUES CLOSED: #4305

packages/workspace/index.ts

@@ -20,7 +20,11 @@ export {
 export { output } from './src/utils/output';
 export { commandsObject } from './src/command-line/nx-commands';
 export { supportedNxCommands } from './src/command-line/supported-nx-commands';
-export { readWorkspaceJson, readNxJson } from './src/core/file-utils';
+export {
+  readWorkspaceJson,
+  readNxJson,
+  readWorkspaceConfig,
+} from './src/core/file-utils';
 export { NxJson } from './src/core/shared-interfaces';
 export {
   ProjectGraphNode,

packages/workspace/src/core/file-utils.ts

@@ -12,7 +12,7 @@ import { ProjectGraphNode } from './project-graph';
 import { Environment, NxJson } from './shared-interfaces';
 import { defaultFileHasher } from './hasher/file-hasher';
 import { performance } from 'perf_hooks';
-import { Workspaces } from '@nrwl/tao/src/shared/workspace';
+import { toOldFormatOrNull, Workspaces } from '@nrwl/tao/src/shared/workspace';
 
 const ignore = require('ignore');
 
@@ -168,6 +168,16 @@ export function readWorkspaceJson(): any {
   return ws.readWorkspaceConfiguration();
 }
 
+export function readWorkspaceConfig(opts: { format: 'angularCli' | 'nx' }) {
+  const json = readWorkspaceJson();
+  if (opts.format === 'angularCli') {
+    const formatted = toOldFormatOrNull(json);
+    return formatted ? formatted : json;
+  } else {
+    return json;
+  }
+}
+
 export function workspaceFileName() {
   if (fileExists(`${appRootPath}/angular.json`)) {
     return 'angular.json';