Automatically Apply override-navigation-builder-extension

Closes gh-37

Author: rwinch

README.adoc

@@ -53,6 +53,7 @@ IMPORTANT: Be sure to register this extension under the `antora.extensions` key
 This extension applies the recommended Antora Extensions.
 It applies the following extensions in the proper order:
 
+* <<_override_navigation_builder_extension>>
 * <<Set Algolia Env>>
 * <<Partial Build>>
 * https://gitlab.com/antora/antora-atlas-extension[@antora/atlas-extension]

lib/index.js

@@ -3,6 +3,7 @@
 const { name: packageName } = require('#package')
 
 module.exports.register = function ({ playbook, config }) {
+  this.require(`${packageName}/override-navigation-builder-extension`).register.call(this, { playbook, config })
   this.require(`${packageName}/set-algolia-env-extension`).register.call(this, { playbook, config })
   this.require(`${packageName}/partial-build-extension`).register.call(this, { playbook, config })
   this.require('@antora/atlas-extension').register.call(this, { config })

test/extensions-test.js

@@ -35,6 +35,7 @@ describe('extensions', () => {
     it('should be able to call register function exported by extension', () => {
       ext.register.call(generatorContext, {})
       expect(generatorContext.required).eql([
+        `${packageName}/override-navigation-builder-extension`,
         `${packageName}/set-algolia-env-extension`,
         `${packageName}/partial-build-extension`,
         '@antora/atlas-extension',