gistfile1.js

function compileExpr(expr) {
    try {
        return compileExprToESExpr(expr);
    } catch (e) {
        if (e instanceof MustCompileToESStmtError) {
            const stmts = compileExprToESStmts(expr, true);
            return wrapInIIFE(stmts);
        } else {
            throw e;
        }
    }
}