bankcode-bic/dist/download/fr.js

Convert bank codes from IBAN to BICs, Name of bank. Currently supports only some selected EU countries.

import { scrapeDownloadUrl } from "../libs/scrape-dowload-url.js";
import { ungzip } from "../libs/ungzip.js";

//#region src/download/fr.ts
const getCacheKey = (country) => {
	return `bankcode-bic-${country}`;
};
const getDownloadUrl = async (fetchFn = globalThis.fetch) => {
	return {
		...await scrapeDownloadUrl("https://www.ecb.europa.eu/stats/financial_corporations/list_of_financial_institutions/html/monthly_list-MID.en.html", /href="(?<url>.+\/fi_mrr_csv_(?<version>\d{6})\.csv\.gz)"/, fetchFn),
		dataFormat: "csv",
		notes: "European Central Bank Financial Institutions"
	};
};
const downloadCSV = async (url, fetchFn = globalThis.fetch, ungzipFn = ungzip) => {
	const res = await fetchFn(url);
	if (!res.ok) throw new Error(`Failed to fetch CSV from ${url}: ${res.statusText}`);
	const contentEncoding = res.headers?.get?.("content-encoding");
	const contentType = res.headers?.get?.("content-type");
	if (contentEncoding === "gzip" || url.endsWith(".gz") || contentType?.includes("gzip")) return await ungzipFn(res);
	else return await res.text();
};
const parseCSV = (cvs, countryCode) => {
	const separator = "	";
	const lines = cvs.split(/\r?\n/);
	const header = lines[0].split(separator);
	const colMap = /* @__PURE__ */ new Map();
	header.forEach((col, idx) => {
		colMap.set(col.trim(), idx);
	});
	lines.shift();
	const wantedCols = [
		"RIAD_CODE",
		"BIC",
		"NAME",
		"ADDRESS",
		"POSTAL",
		"CITY",
		"UNKNOWN",
		"UNKNOWN",
		"UNKNOWN",
		"UNKNOWN"
	];
	const BICs = /* @__PURE__ */ new Set();
	const filterCountry = countryCode.toUpperCase();
	const result = [];
	for (const line_ of lines) {
		const line = line_.trim();
		if (line === "") continue;
		const cols = line.split(separator);
		if (cols[colMap.get("COUNTRY_OF_REGISTRATION") ?? -1] !== filterCountry) continue;
		if (cols[colMap.get("BIC") ?? -1] === "") continue;
		if (BICs.has(cols[colMap.get("BIC") ?? -1])) continue;
		BICs.add(cols[colMap.get("BIC") ?? -1]);
		const row = wantedCols.map((col) => cols[colMap.get(col) ?? -1]?.trim());
		row[0] = row[0].slice(2);
		result.push(row);
	}
	return result;
};

//#endregion
export { downloadCSV, getCacheKey, getDownloadUrl, parseCSV };