Nora
29d9d23a26
- CartContext: lazy initializers replace mount-only useEffect hydration; remove 8 no-initialize-state warnings - Toast/AdminSearchInput: React 19 useContext/use + drop forwardRef (3 no-react19-deprecated-apis) - ProductFormModal: lazy initializers + useSyncExternalStore for mount; parent adds key=editingProduct.id - InstallPrompt: useReducer for prompt state (no-cascading-set-state) - QRScanModal: ref-based latest-callback pattern replaces useEffectEvent deps mistake - OnboardingFlow: functional setState (rerender-functional-setstate) - UsersPage/StopsCalendar/FeaturesAndStats: lazy initializers (rerender-lazy-state-init) - FAQClientPage: server-side brand settings fetch via getBrandSettingsPublic in layout; remove supabase import - LandingPageWrapper: href='#' → href='#top' (anchor-is-valid) - TuxedoVideoHero: replace animate-bounce with ease-out-expo (no-inline-bounce-easing) - ProductTableClient: useCallback for handleDeleted (jsx-no-new-function-as-prop) - excel-parser: pre-compile delimiter regexes (js-hoist-regexp) - water-log/settings: Promise.all for parallel DB calls (async-parallel) - ToastNotification: extract toast store to separate file (only-export-components) - WholesaleClient: inline <WholesaleIcon/> instead of hoisting to const (rendering-hoist-jsx)
88 lines
2.6 KiB
TypeScript
88 lines
2.6 KiB
TypeScript
import ExcelJS from "exceljs";
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export type ParsedSheet = {
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headers: string[];
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rows: string[][];
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};
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export async function parseExcelBuffer(input: Buffer | ArrayBuffer | Uint8Array): Promise<{
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headers: string[];
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rows: string[][];
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}> {
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const workbook = new ExcelJS.Workbook();
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const buffer = Buffer.isBuffer(input) ? input : Buffer.from(new Uint8Array(input));
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await workbook.xlsx.load(buffer as unknown as import("exceljs").Buffer);
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const sheet = workbook.getWorksheet(1);
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if (!sheet) {
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return { headers: [], rows: [] };
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}
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const headers: string[] = [];
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const rows: string[][] = [];
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sheet.eachRow((row, rowIndex) => {
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const values = row.values as (string | number | Date | null | undefined)[];
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const rowData = values.map((v) => {
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if (v === null || v === undefined) return "";
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if (v instanceof Date) return v.toISOString().split("T")[0];
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return String(v).trim();
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});
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if (rowIndex === 1) {
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// Header row
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headers.push(...rowData);
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} else {
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// Skip empty rows
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if (rowData.some((v) => v !== "")) {
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rows.push(rowData);
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}
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}
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});
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return { headers, rows };
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}
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/**
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* Parse CSV/TSV/TXT text into headers + rows.
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* Auto-detects delimiter by checking first few lines.
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*/
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export function parseTextBuffer(rawText: string): ParsedSheet {
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// Normalize line endings
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const text = rawText.replace(/\r\n/g, "\n").replace(/\r/g, "").trim();
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const lines = text.split("\n").filter((l) => l.trim() !== "");
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if (lines.length === 0) return { headers: [], rows: [] };
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// Detect delimiter
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const firstLine = lines[0];
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const delimiter = detectDelimiter(firstLine);
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const headers = firstLine.split(delimiter).map((h) => h.trim().replace(/^["']|["']$/g, ""));
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const rows = lines.slice(1).map((line) =>
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line.split(delimiter).map((v) => v.trim().replace(/^["']|["']$/g, ""))
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);
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return { headers, rows };
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}
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function detectDelimiter(line: string): string {
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const delimiters = [",", "\t", ";", "|"];
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// Pre-compile the matcher regexes once so we don't rebuild them on
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// every loop iteration for every parsed line.
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const matchers = delimiters.map((d) => new RegExp(`\\${d}`, "g"));
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let best = ",";
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let maxCount = 0;
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for (let i = 0; i < delimiters.length; i++) {
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// The regex carries the `g` flag, so we need to reset lastIndex
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// between calls (lastIndex persists on the same regex instance).
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matchers[i].lastIndex = 0;
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const count = (line.match(matchers[i]) ?? []).length;
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if (count > maxCount) {
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maxCount = count;
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best = delimiters[i];
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}
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}
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return best;
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}
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