feat(create-gatsby): Add -y flag

packages/create-gatsby/README.md

@@ -19,3 +19,11 @@ yarn create gatsby
 It will ask you questions about what you're building, and set up a Gatsby project for you.
 
 _Note: this package is different from the Gatsby CLI, it is intended solely to create new sites._
+
+## Options
+
+If you'd like to set up a minimal site without answering any prompts you can run the following command, including your chosen site directory.
+
+```
+npm init gatsby -y <site-directory>
+```

packages/create-gatsby/src/index.ts

@@ -54,6 +54,9 @@ const makeChoices = (
 export const validateProjectName = async (
   value: string
 ): Promise<string | boolean> => {
+  if (!value) {
+    return `You have not provided a directory name for your site. Please do so when running with the 'y' flag.`
+  }
   value = value.trim()
   if (INVALID_FILENAMES.test(value)) {
     return `The destination "${value}" is not a valid filename. Please try again, avoiding special characters.`
@@ -69,7 +72,7 @@ export const validateProjectName = async (
 
 // The enquirer types are not accurate
 // eslint-disable-next-line @typescript-eslint/no-explicit-any
-export const questions = (initialFolderName: string): any => [
+export const questions = (initialFolderName: string, skip: boolean): any => [
   {
     type: `textinput`,
     name: `project`,
@@ -79,6 +82,7 @@ export const questions = (initialFolderName: string): any => [
     initial: initialFolderName,
     format: (value: string): string => c.cyan(value),
     validate: validateProjectName,
+    skip,
   },
   {
     type: `selectinput`,
@@ -140,6 +144,13 @@ export type PluginConfigMap = Record<string, Record<string, unknown>>
 const removeKey = (plugin: string): string => plugin.split(`:`)[0]
 
 export async function run(): Promise<void> {
+  const [flag, siteDirectory] = process.argv.slice(2)
+
+  let yesFlag = false
+  if (flag === `-y`) {
+    yesFlag = true
+  }
+
   trackCli(`CREATE_GATSBY_START`)
 
   const { version } = require(`../package.json`)
@@ -171,15 +182,30 @@ ${center(c.blueBright.bold.underline(`Welcome to Gatsby!`))}
 
   enquirer.use(plugin)
 
-  const { name: siteName } = await enquirer.prompt({
-    type: `textinput`,
-    name: `name`,
-    message: `What would you like to call your site?`,
-    initial: `My Gatsby Site`,
-    format: (value: string): string => c.cyan(value),
-  } as any)
+  let data
+  let siteName
+  if (!yesFlag) {
+    ;({ name: siteName } = await enquirer.prompt({
+      type: `textinput`,
+      name: `name`,
+      message: `What would you like to call your site?`,
+      initial: `My Gatsby Site`,
+      format: (value: string): string => c.cyan(value),
+    } as any))
+
+    data = await enquirer.prompt(questions(makeNpmSafe(siteName), yesFlag))
+  } else {
+    const warn = await validateProjectName(siteDirectory)
+    if (typeof warn === `string`) {
+      reporter.warn(warn)
+      return
+    }
+    siteName = siteDirectory
+    data = await enquirer.prompt(
+      questions(makeNpmSafe(siteDirectory), yesFlag)[0]
+    )
+  }
 
-  const data = await enquirer.prompt(questions(makeNpmSafe(siteName)))
   data.project = data.project.trim()
 
   trackCli(`CREATE_GATSBY_SELECT_OPTION`, {