From 4c97088e1e1a8e5ef21bd74d99bb2780eb7ca4ca Mon Sep 17 00:00:00 2001
From: soupette <cyril.lpz@gmail.com>
Date: Tue, 19 Jun 2018 11:33:25 +0200
Subject: [PATCH] Run eslint only on modified files

---
 scripts/lint.js | 31 +++++++++++++++++++++++++++----
 1 file changed, 27 insertions(+), 4 deletions(-)

diff --git a/scripts/lint.js b/scripts/lint.js
index f3a782a4f0..7170dac323 100644
--- a/scripts/lint.js
+++ b/scripts/lint.js
@@ -2,6 +2,11 @@ const path = require('path');
 const shell = require('shelljs');
 const chalk = require('chalk');
 const eslintErrorsFormatter = require('./eslintErrorsFormatter');
+const glob = require('glob');
+const fs = require('fs');
+const listChangedFiles = require('../packages/strapi-lint/lib/internals/shared/listChangedFiles.js');
+const changedFiles = listChangedFiles();
+const { take } = require('lodash');
 
 const frontCmd =
   'node ../../node_modules/strapi-lint/node_modules/.bin/eslint --ignore-path .gitignore --ignore-pattern \'/admin/build/\' --config ../../node_modules/strapi-lint/lib/internals/eslint/front/.eslintrc.json admin';
@@ -13,7 +18,7 @@ const backCmd =
 
 const watcher = (label, pckgName, type = 'front') => {
   shell.echo(label);
-  shell.cd(`packages/${pckgName}`);
+  shell.cd(pckgName);
   const cmd = pckgName === 'strapi-helper-plugin' ? helperCmd : `${frontCmd} && ${backCmd}`;
   const data = shell.exec(cmd, { silent: true });
   shell.echo(chalk(eslintErrorsFormatter(data.stdout)));
@@ -25,9 +30,27 @@ const watcher = (label, pckgName, type = 'front') => {
   shell.echo('');
 };
 
-const packagesPath = path.resolve(process.env.PWD, 'packages');
-shell.ls('* -d', packagesPath)
-  .filter(package => package !== 'README.md' && package !== 'strapi-middleware-views' && package !== 'strapi-lint' && package !== 'strapi-plugin-settings-manager')
+const files = glob
+  .sync('**/*.js', { ignore: '**/node_modules/**' })
+  .filter(f => changedFiles.has(f))
+  .filter(
+    package =>
+      !package.includes('README.md') &&
+      !package.includes('strapi-middleware-views') &&
+      !package.includes('strapi-lint') &&
+      !package.includes('strapi-plugin-settings-manager') &&
+      !package.includes('scripts') &&
+      !package.includes('test') 
+  )
+  .map(file => {
+    const directoryArray = file.split('/');
+    const toTake = directoryArray.length === 2 ? 1 : 2;
+
+    return take(directoryArray, toTake).join('/');
+  });
+
+files
+  .filter((directory, index) => files.indexOf(directory) === index)
   .forEach(package => {
     watcher(`Testing ${package}`, package);
   });