Node JS Library to Convert Chinese to Pinyin

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When sending parcels from UK to China, you are often required to put 'Pinyin' addresses apart from Chinese address. The Pinyin is to allow tracking put into the system. Recently, I am developing a web application that requires this feature and I am exposing this feature in a public NPM library, so this can be re-used later by other developers.

Github: https://github.com/DoctorLai/chinese_pinyin
NPM Project: https://www.npmjs.com/package/chinese_pinyin

Installation

npm install chinese_pinyin

Sample Usage

var pinyin = require('chinese_pinyin');
console.log(pinyin("你好，我是 @justyy"));

This will output:

"ni hao ，wo shi @justyy"

Dependency

None.

Test in your browser

https://npm.runkit.com/chinese_pinyin

Core Code

'use strict';
var fs = require('fs');
var contents = fs.readFileSync(__dirname + '/data/pinyin.txt', 'utf8');
var arr = contents.split(/\r?\n/);
var table = [];
arr.forEach(function(e) {
    var cc = e.substr(0, 1);
    var pp = e.substr(1).split(',')[0].slice(0, -1);
    table[cc] = pp;
});
const pinyin = (s) => {
    var ns = '';
    var len = s.length;
    for (var i = 0; i < len; ++ i) {
        ns += table[s[i]] ? (table[s[i]] + " ") : s[i];
    }
    return ns.trim();
}
module.exports = pinyin;