private scanUnicodeCodePointEscape()

in src/scanner.ts [404:426]

• 18 lines of code
• 6 McCabe index (conditional complexity)

    private scanUnicodeCodePointEscape(): string {
        let ch = this.source[this.index];
        let code = 0;

        // At least, one hex digit is required.
        if (ch === '}') {
            this.throwUnexpectedToken();
        }

        while (!this.eof()) {
            ch = this.source[this.index++];
            if (!Character.isHexDigit(ch.charCodeAt(0))) {
                break;
            }
            code = code * 16 + hexValue(ch);
        }

        if (code > 0x10FFFF || ch !== '}') {
            this.throwUnexpectedToken();
        }

        return Character.fromCodePoint(code);
    }