Require template literals instead of string concatenation JS-0246
Anti-pattern
Minor
3 months ago
—
a year old
Unexpected string concatenation
41 new winstonDaily({
42 level: 'debug',
43 datePattern: 'YYYY-MM-DD',
44 dirname: logDir + '/debug', // log file /logs/debug/*.log in save45 filename: '%DATE%.log',
46 maxFiles: 30, // 30 Days saved
47 json: false,Unexpected string concatenation
30 new winstonDaily({
31 level: 'error',
32 datePattern: 'YYYY-MM-DD',
33 dirname: logDir + '/error', // log file /logs/error/*.log in save34 filename: '%DATE%.log',
35 maxFiles: 30, // 30 Days saved
36 handleExceptions: true,
Description
In ES2015 (ES6), we can use template literals instead of string concatenation.
var str = `Hello, ${name}!`;
Bad Practice
var str = "Hello, " + name + "!";
var str = "Time: " + (12 * 60 * 60 * 1000);
Recommended
var str = "Hello World!";
var str = `Hello, ${name}!`;
var str = `Time: ${12 * 60 * 60 * 1000}`;
var str = "Hello, " + "World!";