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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
use libc::c_char;use std::ffi::CStr;use serde_json;use unicode_width::UnicodeWidthStr;
fn from_c_char(ptr: *const c_char) -> &'static str {    let c_str = unsafe {        assert!(!ptr.is_null());
        CStr::from_ptr(ptr)    };    return c_str.to_str().unwrap();}
#[no_mangle]pub extern "C" fn unicode_width(json_str: *const c_char) -> usize {    let json_str = from_c_char(json_str);
    serde_json::from_str::<String>(json_str).unwrap().width()}