Fix false positives for type-only import in rules that use compilation (#139)

Author: ota-meshi

src/shared/svelte-compile-warns.ts

@@ -101,9 +101,6 @@ export function getSvelteCompileWarnings(
           importsNotUsedAsValues: ts.ImportsNotUsedAsValues.Preserve,
           sourceMap: true,
         },
-        transformers: {
-          before: [createTsImportTransformer(ts)],
-        },
       })
 
       const outputText = `${output.outputText}\n`
@@ -387,38 +384,3 @@ function getWarningsFromCode(
     ]
   }
 }
-
-/**
- * @see https://github.com/sveltejs/eslint-plugin-svelte3/blob/259263ccaf69c59e473d9bfa39706b0955eccfbd/src/preprocess.js#L194
- * MIT License @ Conduitry
- */
-function createTsImportTransformer(
-  ts: TS,
-): typescript.TransformerFactory<typescript.SourceFile> {
-  const factory = ts.factory
-  /**
-   * https://github.com/sveltejs/svelte-preprocess/blob/main/src/transformers/typescript.ts
-   * TypeScript transformer for preserving imports correctly when preprocessing TypeScript files
-   */
-  return (context: typescript.TransformationContext) => {
-    /** visitor */
-    function visit(node: typescript.Node): typescript.Node {
-      if (ts.isImportDeclaration(node)) {
-        if (node.importClause && node.importClause.isTypeOnly) {
-          return factory.createEmptyStatement()
-        }
-
-        return factory.createImportDeclaration(
-          node.decorators,
-          node.modifiers,
-          node.importClause,
-          node.moduleSpecifier,
-        )
-      }
-
-      return ts.visitEachChild(node, (child) => visit(child), context)
-    }
-
-    return (node: typescript.SourceFile) => ts.visitNode(node, visit)
-  }
-}

tests/fixtures/rules/valid-compile/valid/ts/type-only-import01-input.svelte

@@ -0,0 +1,7 @@
+<script lang="ts">
+  import type { Writable } from "svelte/store"
+  import { writable } from "svelte/store"
+  let a: Writable = writable(42)
+</script>
+
+{{ $a }}

tests/fixtures/rules/valid-compile/valid/ts/type-only-import02-input.svelte

@@ -0,0 +1,6 @@
+<script lang="ts">
+  import { type Writable, writable } from "svelte/store"
+  let a: Writable = writable(42)
+</script>
+
+{{ $a }}