argv(参数相关的)

/*
    argv
    argv0
    execArgv
    execPath
*/
const {
    argv,
    argv0,
    execArgv,
    execPath
} = process;

argv.forEach(item => {
    console.log(item);
});

console.log(argv0);
console.log(execArgv);
console.log(execPath);

env环境

const { env} = process
console.log(env);

cwd 打印出当前process可执行的路径

//打印出当前process可执行的路径
console.log(process.cwd());

timer

举个例子：

12_timer.js（一般情况用setImmediate）

process.nextTick比setImmediate执行得早 process.nextTick最快是因为把自己插入的function当前队列得最后一个 而setImmediate是把它插入下个队列的对=队首，而setTimeout放在两个中间

setImmediate(() => {
    console.log('setImmediate');
})
setTimeout(() => {
    console.log('setTimeout');
}, 0)
process.nextTick(() => {
    console.log('nextTick');
})

运行结果：