prefer-code-point

Prefer Unicode code-point operations over UTF-16 code-unit operations

UTF-16 code-unit operations split characters outside the Basic Multilingual Plane into surrogate pairs.
Instead, you SHOULD use codePointAt and String.fromCodePoint when processing Unicode characters.

- Category: style
- Level: warning
- Fix: suggestion
- Scope: module

Reported

function inspectFirstCharacter(text: string): void {
    text.charCodeAt(0);
}
Accepted

function inspectFirstCharacter(text: string): void {
    text.codePointAt(0);
}
Prior art

- eslint-plugin-unicorn · prefer-code-point

language/linter/src/rules/style/prefercodepoint.rs:8