pakmanaged.js
function advanceJSXChild() {
            var ch = source.charCodeAt(index);
    
            // '<' 60, '>' 62, '{' 123, '}' 125
            if (ch !== 60 && ch !== 62 && ch !== 123 && ch !== 125) {
                return scanJSXText(['<', '>', '{', '}']);
            }
    
            return scanPunctuator();
        }
function advanceJSXChild() {
            var ch = source.charCodeAt(index);
    
            // '<' 60, '>' 62, '{' 123, '}' 125
            if (ch !== 60 && ch !== 62 && ch !== 123 && ch !== 125) {
                return scanJSXText(['<', '>', '{', '}']);
            }
    
            return scanPunctuator();
        }
Between JSX opening and closing tags (e.g. <foo>HERE</foo>), anything that
is not another JSX tag and is not an expression wrapped by {} is text.