Drop object-path

Ref #16

A good reason to drop this package since it's not used for any magic and
the fix is pretty straightforward. Later can be simplified with optional
chaining syntax.

codec/utility/get-context-directory.js

@@ -1,7 +1,6 @@
 'use strict';
 
-var path       = require('path'),
-    objectPath = require('object-path');
+var path       = require('path');
 
 /**
  * Infer the compilation context directory from options.
@@ -11,8 +10,8 @@ var path       = require('path'),
  */
 function getContextDirectory() {
   /* jshint validthis:true */
-  var context = objectPath.get(this, 'options.context');
+  var context = this.options ? this.options.context : null;
   return !!context && path.resolve(context) || process.cwd();
 }
 
-module.exports = getContextDirectory;
+module.exports = getContextDirectory;

codec/utility/get-output-directory.js

@@ -1,8 +1,7 @@
 'use strict';
 
 var path       = require('path'),
-    fs         = require('fs'),
-    objectPath = require('object-path');
+    fs         = require('fs');
 
 var getContextDirectory = require('./get-context-directory');
 
@@ -14,10 +13,10 @@ var getContextDirectory = require('./get-context-directory');
  */
 function getOutputDirectory() {
   /* jshint validthis:true */
-  var base    = objectPath.get(this, 'options.output.directory'),
+  var base    = this.options && this.options.output ? this.options.output.directory : null,
       absBase = !!base && path.resolve(getContextDirectory.call(this), base),
       isValid = !!absBase && fs.existsSync(absBase) && fs.statSync(absBase).isDirectory();
   return isValid ? absBase : undefined;
 }
 
-module.exports = getOutputDirectory;
+module.exports = getOutputDirectory;

package.json

@@ -24,7 +24,6 @@
   "homepage": "https://github.com/bholloway/adjust-sourcemap-loader",
   "dependencies": {
     "loader-utils": "1.2.3",
-    "object-path": "0.11.4",
     "regex-parser": "2.2.10"
   },
   "devDependencies": {