Print {} in import if it's in the source, fixes #2145 (#2150)

src/printer.js

@@ -694,7 +694,13 @@ function genericPrintNoParens(path, options, print, args) {
         }
 
         parts.push(" ", "from ");
-      } else if (n.importKind && n.importKind === "type") {
+      } else if (
+        (n.importKind && n.importKind === "type") ||
+        // import {} from 'x'
+        /{\s*}/.test(
+          options.originalText.slice(util.locStart(n), util.locStart(n.source))
+        )
+      ) {
         parts.push("{} from ");
       }
 

tests/import/__snapshots__/jsfmt.spec.js.snap

@@ -228,6 +228,20 @@ import {
 
 `;
 
+exports[`empty-import.js 1`] = `
+import { } from '@types/googlemaps';
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+import {} from "@types/googlemaps";
+
+`;
+
+exports[`empty-import.js 2`] = `
+import { } from '@types/googlemaps';
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+import {} from "@types/googlemaps";
+
+`;
+
 exports[`inline.js 1`] = `
 import somethingSuperLongsomethingSuperLong from 'somethingSuperLongsomethingSuperLongsomethingSuperLong'
 import {somethingSuperLongsomethingSuperLong} from 'somethingSuperLongsomethingSuperLongsomethingSuperLong'

tests/import/empty-import.js

@@ -0,0 +1 @@
+import { } from '@types/googlemaps';