artesanias/node_modules/tape/lib/default_stream.js

var through = require('through');
var fs = require('fs');

module.exports = function () {
    var line = '';
    var stream = through(write, flush);
    return stream;

    function write(buf) {
        for (var i = 0; i < buf.length; i++) {
            var c = typeof buf === 'string'
                ? buf.charAt(i)
                : String.fromCharCode(buf[i])
            ;
            if (c === '\n') flush();
            else line += c;
        }
    }

    function flush() {
        if (fs.writeSync && /^win/.test(process.platform)) {
            try { fs.writeSync(1, line + '\n'); }
            catch (e) { stream.emit('error', e); }
        } else {
            try { console.log(line); }
            catch (e) { stream.emit('error', e); }
        }
        line = '';
    }
};