2020-09-08 去除js代码的注释

js代码发布的时候需要去除注释，总算找到一个比较好用的js库
参考decomment

npm install decomment

编写一个js脚本remove-comments.js，内容如下：

const fs = require('fs');
const path = require('path');
const process = require('process');
const decomment = require('decomment');

let sourceFile = process.argv[2];
let targetFile = process.argv[3];
if (!sourceFile || !targetFile) {
    throw new Error('Please set source file and target file.');
}

sourceFile = path.resolve(__dirname, sourceFile);
targetFile = path.resolve(__dirname, targetFile);

fs.readFile(sourceFile, 'utf8', (err, data) => {
    if (err) throw err;
    fs.writeFile(targetFile, decomment(data), 'utf8', (err, data) => {
        if (err) throw err;
        console.log('Remove Comments Done!');
    });
});

只需要在命令行下执行：

node remove-comments.js invoice.js invoice_remove.js

invoice_remove.js就是删除注释的代码