feat: add app.commandLine.hasSwitch() / app.commandLine.getSwitchValue()

docs/api/app.md

@@ -1159,6 +1159,20 @@ correctly.
 
 **Note:** This will not affect `process.argv`.
 
+### `app.commandLine.hasSwitch(switch)`
+
+* `switch` String - A command-line switch
+
+Returns `Boolean` - Whether the command-line switch is present.
+
+### `app.commandLine.getSwitchValue(switch)`
+
+* `switch` String - A command-line switch
+
+Returns `String` - The command-line switch value.
+
+**Note:** When the switch is not present, it returns empty string.
+
 ### `app.enableSandbox()` _Experimental_ _macOS_ _Windows_
 
 Enables full sandbox mode on the app.

lib/browser/api/app.js

@@ -25,6 +25,7 @@ Object.assign(app, {
     return Menu.getApplicationMenu()
   },
   commandLine: {
+    ...process.atomBinding('command_line'),
     appendSwitch (...args) {
       const castedArgs = args.map((arg) => {
         return typeof arg !== 'string' ? `${arg}` : arg

spec/api-app-spec.js

@@ -1091,4 +1091,31 @@ describe('app module', () => {
       return expect(app.whenReady()).to.be.eventually.fulfilled
     })
   })
+
+  describe('commandLine.hasSwitch', () => {
+    it('returns true when present', () => {
+      app.commandLine.appendSwitch('foobar1')
+      expect(app.commandLine.hasSwitch('foobar1')).to.be.true()
+    })
+
+    it('returns false when not present', () => {
+      expect(app.commandLine.hasSwitch('foobar2')).to.be.false()
+    })
+  })
+
+  describe('commandLine.getSwitchValue', () => {
+    it('returns the value when present', () => {
+      app.commandLine.appendSwitch('foobar', 'test')
+      expect(app.commandLine.getSwitchValue('foobar')).to.equal('test')
+    })
+
+    it('returns an empty string when present without value', () => {
+      app.commandLine.appendSwitch('foobar1')
+      expect(app.commandLine.getSwitchValue('foobar1')).to.equal('')
+    })
+
+    it('returns an empty string when not present', () => {
+      expect(app.commandLine.getSwitchValue('foobar2')).to.equal('')
+    })
+  })
 })