chore: update import paths and enhance insertImport function for better handling

Author: m0ksem

packages/create-vuestic/src/steps/2.addVuestic/insert-vuestic-compiler.ts

@@ -1,4 +1,4 @@
-import { insertImport } from "./insert-import";
+import { insertImport } from "../../utils/insert-import";
 
 import { usePackageJson } from '../../composables/usePackageJson';
 import { versions } from '../../versions';

packages/create-vuestic/src/utils/add-vite-plugin.ts

@@ -11,8 +11,10 @@ export async function addVitePlugin(viteConfigSource: string, plugin: {
     const lines = viteConfigSource.split('\n');
     const pluginsLineIndex = lines.findIndex(line => line.includes('plugins:'));
     if (pluginsLineIndex === -1) {
+        // TODO: Handle case when plugins array is not found. For now, we expect create-vue adds vue plugin with plugins array.
         return viteConfigSource;
     }
+
     let insertIndex = -1;
     let bracketBalance = 0;
 
@@ -27,7 +29,8 @@ export async function addVitePlugin(viteConfigSource: string, plugin: {
         }
     }
 
-    const intent = lines[pluginsLineIndex + 1].match(/^\s*/)?.[0] || '';
+    const indentSourceLine = lines[pluginsLineIndex + 1] ?? lines[pluginsLineIndex];
+    const intent = indentSourceLine.match(/^\s*/)?.[0] || '';
 
     if (insertIndex !== -1) {
         lines.splice(insertIndex, 0, `${intent}${plugin.name}(),`);

packages/create-vuestic/src/utils/insert-import.ts

@@ -2,13 +2,12 @@ export const insertImport = (source: string, imports: string[]) => {
   const lines = source.split('\n')
   const importString = imports.join('\n')
 
-  const lastImportIndex = lines.length - lines.reverse().findIndex(line => line.match(/import/))
+  const lastImportIndex = lines.findLastIndex(line => line.match(/^import/))
 
-  if (lastImportIndex > lines.length - 1) {
-    lines.splice(lastImportIndex, 0, importString)
-
-    return lines.join('\n')
+  if (lastImportIndex === -1) {
+    return importString + '\n' + source
   }
 
-  return importString + '\n' + source
+  const insertionIndex = lastImportIndex + 1
+  return [...lines.slice(0, insertionIndex), importString, ...lines.slice(insertionIndex)].join('\n')
 }