holidays-jp-gen/dist/cli.js

A CLI tool to generate lightweight TypeScript holiday data modules for Japan based on official government CSV data.

import fs from "node:fs";
import { Command, Option } from "commander";
import { downloadCsv, generateTs, parseCsv } from "./core.js";
const DEFAULT_START_YEAR = 1955;
export function defineCommand() {
    const program = new Command();
    program
        .addOption(new Option("-y, --year <year>", "Start year")
        .default(DEFAULT_START_YEAR)
        .argParser(Number))
        .option("-o, --output <path>", "Output file path");
    return program;
}
export async function main(options) {
    const { year, output } = options;
    if (Number.isNaN(year)) {
        console.error("error: option '-y, --year <year>' argument is not a number");
        process.exit(1);
    }
    const outputPath = output || `holidays-jp-from-${year}.ts`;
    console.log(`Generating a file for ${year} and beyond: ${outputPath}`);
    const buffer = await downloadCsv();
    const holidays = parseCsv(buffer);
    fs.writeFileSync(outputPath, generateTs(holidays, year), "utf-8");
    console.log("Done!");
}