fix: config and normalise can be disabled with false (#952)

test/yargs.js

@@ -1186,6 +1186,17 @@ describe('yargs dsl tests', () => {
       argv.foo.should.equal('baz')
     })
 
+    it('can be disabled with option shorthand', () => {
+      const argv = yargs('--config ./test/fixtures/config.json')
+        .option('config', {
+          config: false,
+          global: false
+        })
+        .argv
+
+      argv.config.should.equal('./test/fixtures/config.json')
+    })
+
     it('allows to pass a configuration object', () => {
       const argv = yargs
           .config({foo: 1, bar: 2})
@@ -1285,6 +1296,17 @@ describe('yargs dsl tests', () => {
       argv.path = '/foo/bar//baz/asdf/quux/..'
       argv.path.should.equal(['', 'foo', 'bar', 'baz', 'asdf'].join(path.sep))
     })
+
+    it('can be disabled with option shorthand', () => {
+      const argv = yargs('--path /batman')
+        .option('path', {
+          normalize: false
+        })
+        .argv
+
+      argv.path = 'mongodb://url'
+      argv.path.should.equal('mongodb://url')
+    })
   })
 
   describe('narg', () => {

yargs.js

@@ -572,10 +572,6 @@ function Yargs (processArgs, cwd, parentRequire) {
         self.demandOption(key, typeof opt.demandOption === 'string' ? opt.demandOption : undefined)
       }
 
-      if ('config' in opt) {
-        self.config(key, opt.configParser)
-      }
-
       if ('conflicts' in opt) {
         self.conflicts(key, opt.conflicts)
       }
@@ -592,7 +588,11 @@ function Yargs (processArgs, cwd, parentRequire) {
         self.nargs(key, opt.nargs)
       }
 
-      if ('normalize' in opt) {
+      if (opt.config) {
+        self.config(key, opt.configParser)
+      }
+
+      if (opt.normalize) {
         self.normalize(key)
       }