cups-printer/dist/tool/tmp-file/tmp-file.js

A package to print documents using CUPS Printer Server in Linux

import { access, writeFile } from 'fs/promises';
import { randomUUID } from 'crypto';
import { tmpdir } from 'os';
import { join } from 'path';
export async function tmpFile(data, prefix, ext) {
    while (true) {
        // Build path
        let name = (prefix ?? '') + randomUUID();
        if (typeof ext === 'string') {
            name += '.';
            name += ext.replace(/^\./gi, '');
        }
        const path = join(tmpdir(), name);
        try {
            // Check existence
            await access(path);
        }
        catch {
            // Write file
            await writeFile(path, data);
            return path;
        }
    }
}
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