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https://github.com/vercel-labs/scriptc.git
synced 2026-10-22 05:59:31 +08:00
Malte Ubl
10b246d604
Fourteen application-shaped workloads (JSON, regex, parsing and class dispatch, sorting, rendering, collection pipelines, async fan-out, Map/Set graphs, allocation, numeric kernels, exceptions, CSV, and the two multi-module build benchmark apps on large inputs). bench:runtime builds each workload with one or two checkouts, refuses to time any executable whose stdout, stderr, or exit status differs from Node, interleaves baseline and candidate launches, and reports medians with bootstrap 95% confidence intervals, binary size, and peak RSS.
44 lines
1.8 KiB
TypeScript
44 lines
1.8 KiB
TypeScript
// CSV parsing and numeric formatting: split, Number(), parseInt,
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// toFixed, String(n), and string assembly of a report.
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let seed = 1001;
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function random(): number {
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seed = (Math.imul(seed, 1103515245) + 12345) >>> 0;
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return seed / 4294967296;
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}
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function makeCsv(rows: number): string {
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const lines: string[] = ["date,store,units,unit_price,discount"];
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for (let i = 0; i < rows; i++) {
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const day = 1 + (i % 28);
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lines.push(
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`2026-${String(1 + (i % 12)).padStart(2, "0")}-${String(day).padStart(2, "0")},store-${Math.floor(random() * 40)},${Math.floor(random() * 50)},${(random() * 200).toFixed(2)},${(random() * 0.3).toFixed(3)}`,
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);
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}
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return lines.join("\n");
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}
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const scale = Number(process.argv[2] ?? "1");
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const csv = makeCsv(Math.floor(150000 * scale));
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const totals = new Map<string, number>();
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const months: number[] = new Array<number>(13).fill(0);
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let units = 0;
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let formatted = 0;
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for (let round = 0; round < 2; round++) {
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const lines = csv.split("\n");
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for (let i = 1; i < lines.length; i++) {
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const cols = lines[i]!.split(",");
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const month = parseInt(cols[0]!.slice(5, 7), 10);
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const count = Number(cols[2]);
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const price = Number(cols[3]);
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const discount = Number(cols[4]);
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const revenue = count * price * (1 - discount);
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units += count;
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months[month] = months[month]! + revenue;
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totals.set(cols[1]!, (totals.get(cols[1]!) ?? 0) + revenue);
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formatted += (revenue.toFixed(2) + "|" + String(count)).length;
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}
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}
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const stores = [...totals.keys()].sort();
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const report = stores.map((s) => `${s}: ${totals.get(s)!.toFixed(2)}`).join("\n");
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console.log(report.split("\n").slice(0, 5).join("\n"));
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console.log("units", units, "formatted", formatted, "jan", months[1]!.toFixed(2), "dec", months[12]!.toFixed(2));
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