fix(core): recalculate dep-graph when root files are touched

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

@@ -97,6 +97,18 @@ function defaultReadFileAtRevision(
   }
 }
 
+function getFileData(filePath: string): FileData {
+  const stat = fs.statSync(filePath);
+  return {
+    file: path
+      .relative(appRootPath, filePath)
+      .split(path.sep)
+      .join('/'),
+    ext: path.extname(filePath),
+    mtime: stat.mtimeMs
+  };
+}
+
 export function allFilesInDir(
   dirName: string,
   recurse: boolean = true
@@ -118,14 +130,7 @@ export function allFilesInDir(
         const s = fs.statSync(child);
         if (!s.isDirectory()) {
           // add starting with "apps/myapp/..." or "libs/mylib/..."
-          res.push({
-            file: path
-              .relative(appRootPath, child)
-              .split(path.sep)
-              .join('/'),
-            ext: path.extname(child),
-            mtime: s.mtimeMs
-          });
+          res.push(getFileData(child));
         } else if (s.isDirectory() && recurse) {
           res = [...res, ...allFilesInDir(child)];
         }
@@ -182,10 +187,19 @@ export function readNxJson(): NxJson {
   return config;
 }
 
+// TODO: Make this list extensible
+export function rootWorkspaceFileNames(): string[] {
+  return [`package.json`, workspaceFileName(), `nx.json`, `tsconfig.json`];
+}
+
 export function readWorkspaceFiles(): FileData[] {
   const workspaceJson = readWorkspaceJson();
   const files = [];
 
+  files.push(
+    ...rootWorkspaceFileNames().map(f => getFileData(`${appRootPath}/${f}`))
+  );
+
   // Add known workspace files and directories
   files.push(...allFilesInDir(appRootPath, false));
   files.push(...allFilesInDir(`${appRootPath}/tools`));

packages/workspace/src/core/project-graph/project-graph.ts

@@ -1,4 +1,4 @@
-import { mkdirSync, readFileSync } from 'fs';
+import { mkdirSync } from 'fs';
 import { ProjectGraph } from './project-graph-models';
 import { ProjectGraphBuilder } from './project-graph-builder';
 import { appRootPath } from '../../utils/app-root';

packages/workspace/src/tasks-runner/hasher.spec.ts

@@ -10,6 +10,9 @@ describe('Hasher', () => {
     hasha.mockImplementation(values => values.join('|'));
     hasha.fromFile.mockImplementation(path => Promise.resolve(hashes[path]));
     fs.statSync.mockReturnValue({ size: 100 });
+    fs.readFileSync.mockImplementation(() =>
+      JSON.stringify({ dependencies: {}, devDependencies: {} })
+    );
   });
 
   it('should create project hash', async done => {

packages/workspace/src/tasks-runner/hasher.ts

@@ -2,6 +2,7 @@ import { ProjectGraph } from '../core/project-graph';
 import { NxJson } from '../core/shared-interfaces';
 import { Task } from './tasks-runner';
 import { statSync } from 'fs';
+import { rootWorkspaceFileNames } from '../core/file-utils';
 
 const hasha = require('hasha');
 
@@ -42,6 +43,7 @@ export class Hasher {
       ...Object.keys(this.nxJson.implicitDependencies || {}).map(r =>
         this.fileHashes.hashFile(r)
       ),
+      ...rootWorkspaceFileNames().map(r => this.fileHashes.hashFile(r)),
       this.fileHashes.hashFile('package-lock.json'),
       this.fileHashes.hashFile('yarn.lock')
     ]);