feat(init): Adds minimal .gitignore on prisma init (#8203)

src/packages/cli/src/Init.ts

@@ -100,6 +100,13 @@ export const defaultURL = (
   }
 }
 
+export const defaultGitIgnore = () => {
+  return `node_modules
+# Keep environment variables out of version control
+.env
+`
+}
+
 export class Init implements Command {
   static new(): Init {
     return new Init()
@@ -268,6 +275,15 @@ export class Init implements Command {
       }
     }
 
+    try {
+      fs.writeFileSync(
+      path.join(outputDir, ".gitignore"),
+      defaultGitIgnore()
+      );
+    } catch (error) {
+      console.error("Failed to write .gitignore file, reason: ", error);
+    }
+
     const steps: string[] = []
 
     if (provider === 'mongodb') {

src/packages/cli/src/__tests__/__snapshots__/init.test.ts.snap

@@ -153,3 +153,10 @@ More information in our documentation:
 https://pris.ly/d/getting-started
     
 `;
+
+exports[`writes a minimal .gitignore file 1`] = `
+node_modules
+# Keep environment variables out of version control
+.env
+
+`;

src/packages/cli/src/__tests__/init.test.ts

@@ -1,7 +1,7 @@
 import fs from 'fs'
 import { join } from 'path'
 import stripAnsi from 'strip-ansi'
-import { defaultEnv, defaultSchema } from '../Init'
+import { defaultEnv, defaultGitIgnore, defaultSchema } from '../Init'
 import { consoleContext, Context } from './__helpers__/context'
 
 const ctx = Context.new().add(consoleContext()).assemble()
@@ -196,3 +196,12 @@ test('appends when .env present', async () => {
   const env = fs.readFileSync(join(ctx.tmpDir, '.env'), 'utf-8')
   expect(env).toMatchSnapshot()
 })
+
+test('writes a minimal .gitignore file', async () => {
+  ctx.fixture('init');
+  await ctx.cli('init');
+  const gitignore = fs.readFileSync(join(ctx.tmpDir, '.gitignore'), 'utf-8');
+  expect(gitignore).toMatch(defaultGitIgnore());
+
+  expect(gitignore).toMatchSnapshot();
+})