♻️ move code around

src/commands/add/prettier.ts

@@ -16,14 +16,11 @@ export default class Prettier extends BaseAddCommand {
   };
 
   async run() {
-    const packagePath = filesystem.path('.', 'package.json');
-
-    if (filesystem.exists(packagePath) !== 'file') {
+    if (!this.hasDirPackageJson()) {
       this.error('There is no package.json not found in the current folder');
     }
 
-    const packageJson = filesystem.read(packagePath, 'json');
-    if (packageJson.devDependencies.prettier) {
+    if (this.hasDevDependencyInPackageJson('prettier')) {
       this.error('Prettier is already installed in this project.');
     }
 
@@ -54,6 +51,7 @@ export default class Prettier extends BaseAddCommand {
     await this.addDevDependency('pretty-quick', shouldCommit);
 
     await this.runWithSpinner('Adding package.json scripts', async () => {
+      const packagePath = filesystem.path('.', 'package.json');
       const packageJsonWithDeps = filesystem.read(packagePath, 'json');
       const finalPackageJson = {
         ...packageJsonWithDeps,
@@ -65,7 +63,9 @@ export default class Prettier extends BaseAddCommand {
           'format:check': `prettier --list-different "${mask}"`,
         },
         husky: {
+          ...packageJsonWithDeps.husky,
           hooks: {
+            ...packageJsonWithDeps?.husky?.hooks,
             'pre-commit': 'pretty-quick --staged',
           },
         },

src/utls/base-add-command.ts

@@ -1,7 +1,7 @@
 import { BaseCommand } from './base-command';
 import { add, commit, config as gitConfig, statusMatrix } from 'isomorphic-git';
 import * as latestVersion from 'latest-version';
-import { system } from 'gluegun';
+import { filesystem, system } from 'gluegun';
 
 export abstract class BaseAddCommand extends BaseCommand {
   static flags = {
@@ -34,6 +34,15 @@ export abstract class BaseAddCommand extends BaseCommand {
     }
   }
 
+  hasDirPackageJson() {
+    return filesystem.isFile(filesystem.path('.', 'package.json'));
+  }
+
+  hasDevDependencyInPackageJson(name: string): boolean {
+    const packageJson = filesystem.read('package.sjon', 'json');
+    return Boolean(packageJson.devDependencies[name]);
+  }
+
   async gitAddUnstaged() {
     const commitsPromice = (await statusMatrix({ dir: '.', pattern: '**' }))
       .filter(([_, head, workdir, stage]) => !(head === 1 && workdir === 1 && stage === 1))