fix(qr): lazy load terminal runtime modules

src/media/qr-image.ts

@@ -1,5 +1,3 @@
-import QRCodeModule from "qrcode-terminal/vendor/QRCode/index.js";
-import QRErrorCorrectLevelModule from "qrcode-terminal/vendor/QRCode/QRErrorCorrectLevel.js";
 import { encodePngRgba, fillPixel } from "./png-encode.ts";
 
 type QRCodeConstructor = new (
@@ -12,10 +10,26 @@ type QRCodeConstructor = new (
   isDark: (row: number, col: number) => boolean;
 };
 
-const QRCode = QRCodeModule as QRCodeConstructor;
-const QRErrorCorrectLevel = QRErrorCorrectLevelModule;
+let qrCodeRuntimePromise: Promise<{
+  QRCode: QRCodeConstructor;
+  QRErrorCorrectLevel: Record<string, unknown>;
+}> | null = null;
 
-function createQrMatrix(input: string) {
+async function loadQrCodeRuntime() {
+  if (!qrCodeRuntimePromise) {
+    qrCodeRuntimePromise = Promise.all([
+      import("qrcode-terminal/vendor/QRCode/index.js"),
+      import("qrcode-terminal/vendor/QRCode/QRErrorCorrectLevel.js"),
+    ]).then(([qrCodeModule, errorCorrectLevelModule]) => ({
+      QRCode: qrCodeModule.default as QRCodeConstructor,
+      QRErrorCorrectLevel: errorCorrectLevelModule.default,
+    }));
+  }
+  return await qrCodeRuntimePromise;
+}
+
+async function createQrMatrix(input: string) {
+  const { QRCode, QRErrorCorrectLevel } = await loadQrCodeRuntime();
   const qr = new QRCode(-1, QRErrorCorrectLevel.L);
   qr.addData(input);
   qr.make();
@@ -27,7 +41,7 @@ export async function renderQrPngBase64(
   opts: { scale?: number; marginModules?: number } = {},
 ): Promise<string> {
   const { scale = 6, marginModules = 4 } = opts;
-  const qr = createQrMatrix(input);
+  const qr = await createQrMatrix(input);
   const modules = qr.getModuleCount();
   const size = (modules + marginModules * 2) * scale;
 

src/types/qrcode-terminal.d.ts

@@ -1,3 +1,16 @@
+declare module "qrcode-terminal" {
+  type GenerateOptions = {
+    small?: boolean;
+  };
+
+  type QrCodeTerminal = {
+    generate: (input: string, options?: GenerateOptions, cb?: (output: string) => void) => void;
+  };
+
+  const qrcode: QrCodeTerminal;
+  export default qrcode;
+}
+
 declare module "qrcode-terminal/vendor/QRCode/index.js" {
   const QRCode: unknown;
   export default QRCode;