prefer-code-point.md

prefer-code-point

📝 Prefer String#codePointAt(…) over String#charCodeAt(…) and String.fromCodePoint(…) over String.fromCharCode(…).

💼 This rule is enabled in the following configs: ✅ recommended, ☑️ unopinionated.

💡 This rule is manually fixable by editor suggestions.

Unicode is better supported in String#codePointAt() and String.fromCodePoint().

• Difference between String.fromCodePoint() and String.fromCharCode()

Examples

// ❌
const unicorn = '🦄'.charCodeAt(0).toString(16);

// ✅
const unicorn = '🦄'.codePointAt(0).toString(16);

// ❌
const unicorn = String.fromCharCode(0x1f984);

// ✅
const unicorn = String.fromCodePoint(0x1f984);