Add barcode-detector-api-polyfill dependency and update environment variable declarations in SvelteKit project

node_modules/@zxing/text-encoding/cjs/encoding/encodings.d.ts

@@ -0,0 +1,35 @@
+/**
+ * @param {boolean} fatal If true, decoding errors raise an exception.
+ * @param {number=} opt_code_point Override the standard fallback code point.
+ * @return {number} The code point to insert on a decoding error.
+ */
+export declare function decoderError(fatal: boolean, opt_code_point?: number | undefined): number;
+/**
+ * @param {number} code_point The code point that could not be encoded.
+ * @return {number} Always throws, no value is actually returned.
+ */
+export declare function encoderError(code_point: number): number;
+/**
+ * @param {string} label The encoding label.
+ * @return {?{name:string,labels:Array.<string>}}
+ */
+export declare function getEncoding(label: string): {
+    name: string;
+    labels: Array<string>;
+} | null;
+/**
+ * Encodings table: https://encoding.spec.whatwg.org/encodings.json
+ * @const
+ * @type {!Array.<{
+ *          heading: string,
+ *          encodings: Array.<{name:string,labels:Array.<string>}>
+ *        }>}
+ */
+declare const encodings: {
+    heading: string;
+    encodings: {
+        name: string;
+        labels: string[];
+    }[];
+}[];
+export { encodings };