Require template literals instead of string concatenation JS-0246
Anti-pattern
Minor
7 months ago
—
a year old
Unexpected string concatenation
44 const app = fastify.fastify(fastifyOptions);
45
46 // Logger middleware for fastify instance (logs to console)
47 logger.info("\n\nEnvironment details: " + consoleOutput);48
49 // Register API routes.
50 routes(app);Unexpected string concatenation
109 certificate.write(Buffer.from(revocationCertificate).toString("base64"));
110 certificate.on("finish", () => {
111 console.log(
112 "🔏 The revocation certificate data was written to `" +113 data.type +114 ".cert`",115 );
116 });
117 certificate.end();Unexpected string concatenation
103 prkey.end();
104
105 const certificate = fs.createWriteStream(
106 path.resolve(__dirname, "../key/" + data.type + ".cert"),107 { encoding: "utf8" },
108 );
109 certificate.write(Buffer.from(revocationCertificate).toString("base64"));Unexpected string concatenation
97 prkey.write(Buffer.from(privateKey).toString("base64"));
98 prkey.on("finish", () => {
99 console.log(
100 "🔒 The private key data was written to `" + data.type + ".key`",101 );
102 });
103 prkey.end();Unexpected string concatenation
91 pbkey.end();
92
93 const prkey = fs.createWriteStream(
94 path.resolve(__dirname, "../key/" + data.type + ".key"), 95 { encoding: "utf8" },
96 );
97 prkey.write(Buffer.from(privateKey).toString("base64"));
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!";