private codePointAt()

in src/scanner.ts [376:388]

• 11 lines of code
• 5 McCabe index (conditional complexity)

    private codePointAt(i: number): number {
        let cp = this.source.charCodeAt(i);

        if (cp >= 0xD800 && cp <= 0xDBFF) {
            const second = this.source.charCodeAt(i + 1);
            if (second >= 0xDC00 && second <= 0xDFFF) {
                const first = cp;
                cp = (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000;
            }
        }

        return cp;
    }