feat(schematics): do not set boot page when the target file is modified (#3178)

Author: hsuanxyz

schematics/ng-add/schema.json

@@ -16,6 +16,11 @@
       "default": false,
       "description": "Do not add ng-zorro-antd dependencies to package.json (e.g., --skipPackageJson)"
     },
+    "bootPage": {
+      "type": "boolean",
+      "default": true,
+      "description": "Set up boot page."
+    },
     "dynamicIcon": {
       "type": "boolean",
       "default": false,
@@ -124,13 +129,7 @@
       "type": "boolean",
       "default": true,
       "description": "Whether Angular browser animations should be set up."
-    },
-    "bootPage": {
-      "type": "boolean",
-      "default": true,
-      "description": "Whether boot page should be set up.",
-      "x-prompt": "Set up the boot page"
     }
   },
   "required": []
-}
+}

schematics/ng-generate/boot-page/index.ts

@@ -2,14 +2,15 @@ import { Rule, Tree } from '@angular-devkit/schematics';
 import { getProjectFromWorkspace } from '@angular/cdk/schematics';
 import { getWorkspace } from '@schematics/angular/utility/config';
 import chalk from 'chalk';
+import { statSync as fsStatSync } from 'fs';
 import { Schema } from './schema';
 
 const bootPageHTML = `<!-- NG-ZORRO -->
 <a href="https://github.com/NG-ZORRO/ng-zorro-antd" target="_blank" style="display: flex;align-items: center;justify-content: center;height: 100%;width: 100%;">
   <img height="300" src="https://img.alicdn.com/tfs/TB1X.qJJgHqK1RjSZFgXXa7JXXa-89-131.svg">
 </a>`;
 
-export default function (options: Schema): Rule {
+export default function(options: Schema): Rule {
   return (host: Tree) => {
     const workspace = getWorkspace(host);
     const project = getProjectFromWorkspace(workspace, options.project);
@@ -18,11 +19,16 @@ export default function (options: Schema): Rule {
 
     if (!buffer) {
       console.log();
-      console.error(chalk.red(`Could not find the project ${chalk.blue(appHTMLFile)} file inside of the ` +
-        `workspace config`));
+      console.error(
+        chalk.red(`Could not find the project ${chalk.blue(appHTMLFile)} file inside of the ` + `workspace config`)
+      );
       return;
     }
-    host.overwrite(appHTMLFile, bootPageHTML);
+    const stat = fsStatSync(appHTMLFile);
+    if (stat.mtimeMs === stat.ctimeMs) {
+      host.overwrite(appHTMLFile, bootPageHTML);
+    }
+
     return host;
   };
 }