1 # Disallow template literal placeholder syntax in regular strings (no-template-curly-in-string)
3 ECMAScript 6 allows programmers to create strings containing variable or expressions using template literals, instead of string concatenation, by writing expressions like `${variable}` between two backtick quotes (\`). It can be easy to use the wrong quotes when wanting to use template literals, by writing `"${variable}"`, and end up with the literal value `"${variable}"` instead of a string containing the value of the injected expressions.
7 This rule aims to warn when a regular string contains what looks like a template literal placeholder. It will warn when it finds a string containing the template literal placeholder (`${something}`) that uses either `"` or `'` for the quotes.
11 Examples of **incorrect** code for this rule:
14 /*eslint no-template-curly-in-string: "error"*/
17 "Time: ${12 * 60 * 60 * 1000}";
20 Examples of **correct** code for this rule:
23 /*eslint no-template-curly-in-string: "error"*/
25 `Time: ${12 * 60 * 60 * 1000}`;
27 templateFunction`Hello ${name}`;
32 This rule should not be used in ES3/5 environments.