From a4d25f4172828fb2b1fe56eeee68cdb0204eba1f Mon Sep 17 00:00:00 2001
From: Vincent Morneau <vincent.morneau@gmail.com>
Date: Mon, 8 Aug 2016 09:15:05 -0400
Subject: [PATCH] catches errors when missing packages.

fixes #112
---
 docs/config.json.md | 12 ++++++++++--
 gulpfile.js         | 33 +++++++++++++++++++++------------
 2 files changed, 31 insertions(+), 14 deletions(-)

diff --git a/docs/config.json.md b/docs/config.json.md
index b3a3f31..77c1760 100644
--- a/docs/config.json.md
+++ b/docs/config.json.md
@@ -92,9 +92,17 @@ Name | Type | Default | Description
 Name | Type | Default | Description
 -- | -- | -- | --
 `header.enabled` | boolean | `false` | Turns on and off the automatic header comment block feature.
-`header.packageJsonPath` | string | | Represents the path to your project's `package.json` file. Only applies if `header.enabled` is `true`.
+`header.packageJsonPath` | string | | Points to your project's `package.json` file. Only applies if `header.enabled` is `true`.
 
-> Will output a standardized comment block at the start of `js` and `css` files.  
+> config.json example:
+```json
+"header": {
+    "enabled": true,
+    "packageJsonPath": "../project/package.json"
+}
+```
+
+> Doing so will output a standardized comment block at the start of `js` and `css` files.  
 > Example:
 ```js
 /*!
diff --git a/gulpfile.js b/gulpfile.js
index 6400f5a..e63f722 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -1,4 +1,5 @@
 // 1. LIBRARIES
+try {
 var gulp = require('gulp'),
     plugins = require('gulp-load-plugins')(),
     del = require('del'),
@@ -15,9 +16,12 @@ var gulp = require('gulp'),
     validate = require('jsonschema').validate,
     schema = require('./lib/defaultSchema'),
     fs = require("fs"),
-    mkdirp = require('mkdirp');
-
-const chalk = require('chalk');
+    mkdirp = require('mkdirp'),
+    chalk = require('chalk');
+} catch (e) {
+    console.error('Your installation is missing dependencies. Please execute "npm install" again.');
+    process.exit();
+}
 
 // 2. PREREQUISITES AND ERROR HANDLING
 
@@ -68,15 +72,20 @@ if (config.sass.enabled && config.less.enabled) {
 
 // missing project header.packageJsonPath
 if (config.header.enabled) {
-    var pkg = require(config.header.packageJsonPath + "package.json");
-    var banner = ['/*!',
-      ' * <%= pkg.name %> - <%= pkg.description %>',
-      ' * @author v<%= pkg.author %>',
-      ' * @version v<%= pkg.version %>',
-      ' * @link <%= pkg.homepage %>',
-      ' * @license <%= pkg.license %>',
-      ' */',
-      ''].join('\n');
+    try {
+        var pkg = require(config.header.packageJsonPath);
+        var banner = ['/*!',
+          ' * <%= pkg.name %> - <%= pkg.description %>',
+          ' * @author v<%= pkg.author %>',
+          ' * @version v<%= pkg.version %>',
+          ' * @link <%= pkg.homepage %>',
+          ' * @license <%= pkg.license %>',
+          ' */',
+          ''].join('\n');
+    } catch (e) {
+        console.log(chalk.red.bold("Your 'config.header.packageJsonPath' is invalid. It should point to your package.json file."));
+        process.exit();
+    }
 }
 
 // 3. SETTINGS VARIABLES