fix(docs-infra): use clean package.json template when generating zips (#24691)

Closes #24689

PR Close #24691

aio/tools/example-zipper/customizer/package-json/cli.json

@@ -9,8 +9,8 @@
   ],
   "dependencies": [],
   "devDependencies": [
-    "@angular/cli",
     "@angular-devkit/build-angular",
+    "@angular/cli",
     "@types/jasminewd2",
     "jasmine-spec-reporter",
     "karma-coverage-istanbul-reporter",

aio/tools/example-zipper/customizer/package-json/i18n.json

@@ -11,8 +11,8 @@
   ],
   "dependencies": [],
   "devDependencies": [
-    "@angular/cli",
     "@angular-devkit/build-angular",
+    "@angular/cli",
     "@types/jasminewd2",
     "jasmine-spec-reporter",
     "karma-coverage-istanbul-reporter",

aio/tools/example-zipper/customizer/package-json/packageJsonCustomizer.js

@@ -1,19 +1,21 @@
 'use strict';
 
 const path = require('canonical-path');
+const fs = require('fs');
 
 const examplesPath = path.resolve(__dirname, '../../../examples');
 const packageFolder = path.resolve(__dirname);
 
 class PackageJsonCustomizer {
   constructor() {
-    this.dependenciesPackageJson = require(path.join(examplesPath, '/shared/package.json'));
-    this.scriptsPackageJson = require(path.join(examplesPath, '/shared/boilerplate/systemjs/package.json'));
-    this.basePackageJson = require(`${packageFolder}/base.json`);
+    this.dependenciesPackageJson = this.readJson(path.join(examplesPath, '/shared/package.json'));
+    this.scriptsPackageJson = this.readJson(path.join(examplesPath, '/shared/boilerplate/systemjs/package.json'));
+    this.basePackageJson = this.readJson(`${packageFolder}/base.json`);
+    this.templatePackageJson = this.readJson(`${packageFolder}/package.json`, false);
   }
 
   generate(type = 'systemjs') {
-    let packageJson = require(`${packageFolder}/package.json`);
+    let packageJson = JSON.parse(this.templatePackageJson);
     let rules = require(`${packageFolder}/${type}.json`);
 
     this._mergeJSON(rules, this.basePackageJson);
@@ -39,8 +41,8 @@ class PackageJsonCustomizer {
     return JSON.stringify(packageJson, null, 2);
   }
 
-  _mergeJSON(json1,json2) {
-    var result = json1 ;
+  _mergeJSON(json1, json2) {
+    var result = json1;
     for (var prop in json2)
     {
         if (json2.hasOwnProperty(prop))
@@ -50,6 +52,12 @@ class PackageJsonCustomizer {
     }
     return result;
   }
+
+  readJson(jsonFile, parse = true) {
+    const contents = fs.readFileSync(jsonFile, 'utf8');
+
+    return parse ? JSON.parse(contents) : contents;
+  }
 }
 
 module.exports = PackageJsonCustomizer;

aio/tools/example-zipper/customizer/package-json/testing.json

@@ -9,6 +9,7 @@
   ],
   "dependencies": [],
   "devDependencies": [
+    "@angular-devkit/build-angular",
     "@angular/cli",
     "@types/jasminewd2",
     "jasmine-marbles",

aio/tools/example-zipper/customizer/package-json/universal.json

@@ -15,6 +15,7 @@
     "@nguniversal/module-map-ngfactory-loader"
   ],
   "devDependencies": [
+    "@angular-devkit/build-angular",
     "@angular/cli",
     "@types/jasminewd2",
     "jasmine-spec-reporter",