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Next.js App Router API route
Server-side conversion via an uploaded file.
Create a POST route that accepts multipart form data and returns the parsed JSON. Pure server code — the client never needs to load the parser.
ts
// app/api/convert/route.ts
import tabularjs from 'tabularjs';
export async function POST(req: Request) {
const form = await req.formData();
const file = form.get('file') as File;
const buffer = Buffer.from(await file.arrayBuffer());
const result = await tabularjs(buffer, { name: file.name });
return Response.json(result);
}Live Preview
Sample output for a file with employee data.
stdout
{
"worksheets": [
{
"name": "Sheet1",
"data": [
["Name", "Department", "Salary", "Start Date"],
["Alice Johnson", "Engineering", 95000, "2021-03-15"],
["Bob Smith", "Marketing", 72000, "2022-01-10"],
["Carol Williams", "Engineering", 88000, "2020-07-22"],
["David Brown", "Design", 68000, "2023-02-08"],
["Eve Davis", "Engineering", 102000, "2019-11-30"]
]
}
]
}