don't remove const if referenced before declaration (#3337)

1 files changed, 42 insertions, 0 deletions

diff --git a/test/bundler/esbuild/default.test.ts b/test/bundler/esbuild/default.test.ts
index 215276139..0d1775606 100644
--- a/test/bundler/esbuild/default.test.ts
+++ b/test/bundler/esbuild/default.test.ts
@@ -6520,4 +6520,46 @@ describe("bundler", () => {
       `,
     },
   });
+  itBundled("default/ConstDeclNotRemovedIfReferencedBeforeDecl", {
+    files: {
+      "/entry.js": `
+        {
+          const foo = () => {
+            return data;
+          }
+          const data = 123;
+
+          console.log(foo());
+        }
+      `,
+    },
+    minifySyntax: true,
+    run: {
+      stdout: "123",
+    },
+    onAfterBundle(api) {
+      api.expectFile("/out.js").toContain("data = 123");
+    },
+  });
+  itBundled("default/ConstDeclRemovedIfReferencedBeforeAllUses", {
+    files: {
+      "/entry.js": `
+        {
+          const data = 123;
+          const foo = () => {
+            return data;
+          }
+
+          console.log(foo());
+        }
+      `,
+    },
+    minifySyntax: true,
+    run: {
+      stdout: "123",
+    },
+    onAfterBundle(api) {
+      api.expectFile("/out.js").not.toContain("data = 123");
+    },
+  });
 });