land: add non-interactive mode

Non-interactive mode will try to land a Pull Request without asking any
questions. This is meant to be used by scripts and CI landing tools.

components/git/land.js

@@ -38,6 +38,8 @@ function builder(yargs) {
     .options(landOptions).positional('prid', {
       describe: 'ID or URL of the Pull Request'
     })
+    .boolean('non-interactive')
+    .defaults({ 'non-interactive': false })
     .epilogue(epilogue)
     .example('git node land https://github.com/nodejs/node/pull/12344',
       'Land https://github.com/nodejs/node/pull/12344 in the current directory')
@@ -93,6 +95,9 @@ function handler(argv) {
 
 function land(state, argv) {
   const cli = new CLI(process.stderr);
+  if (argv['non-interactive']) {
+    cli.setNonInteractive();
+  }
   const req = new Request();
   const dir = process.cwd();
 

lib/cli.js

@@ -24,6 +24,7 @@ class CLI {
     this.spinner = ora({ stream: this.stream });
     this.SPINNER_STATUS = SPINNER_STATUS;
     this.figureIndent = '   ';
+    this.nonInteractive = false;
   }
 
   get eolIndent() {
@@ -36,6 +37,9 @@ class CLI {
 
   async prompt(question, defaultAnswer = true) {
     this.separator();
+    if (this.nonInteractive) {
+      return defaultAnswer;
+    }
     const { answer } = await inquirer.prompt([{
       type: 'confirm',
       name: 'answer',
@@ -45,6 +49,10 @@ class CLI {
     return answer;
   }
 
+  setNonInteractive() {
+    this.nonInteractive = true;
+  }
+
   startSpinner(text) {
     this.spinner.text = text;
     this.spinner.start();

lib/landing_session.js

@@ -20,7 +20,7 @@ class LandingSession extends Session {
     this.startLanding();
     const status = metadata.status ? 'should be ready' : 'is not ready';
     const shouldContinue = await cli.prompt(
-      `This PR ${status} to land, do you want to continue?`);
+      `This PR ${status} to land, do you want to continue?`, metadata.status);
     if (!shouldContinue) {
       return this.abort();
     }