<p><br></p><p><br></p><p>1. 특정 폴더를 생성한 다음 터미널에서 아래 명령어 실행&nbsp;</p><div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px; white-space: pre;">npm&nbsp;init</div><p><br></p><p>2. package.json 파일이 생기면 "tpye": "module" 추가</p><p>추가적으로 "commonjs"와 "module"이 있는데 module은 ES6 모듈형식을 사용하겠다는 내용이다.&nbsp;&nbsp;</p><div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px; white-space: pre;"><div>{</div><div>&nbsp;&nbsp;"<span style="color: #9cdcfe;">type</span>":&nbsp;<span style="color: #ce9178;">"module"</span>,</div><div>&nbsp;&nbsp;"<span style="color: #9cdcfe;">dependencies</span>":&nbsp;{</div><div>&nbsp;&nbsp;&nbsp;&nbsp;"<span style="color: #9cdcfe;">node-forge</span>":&nbsp;<span style="color: #ce9178;">"^0.10.0"</span></div><div>&nbsp;&nbsp;}</div><div>}</div></div><p><br></p><p>commonjs 와 module의 차이는 아래와 같다. 동일한 소스이다.</p><div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px; white-space: pre;"><div><span style="color: #6a9955;">//&nbsp;CommonJS</span></div><div><span style="color: #569cd6;">var</span>&nbsp;<span style="color: #4ec9b0;">http</span>&nbsp;=&nbsp;<span style="color: #dcdcaa;">require</span>(<span style="color: #ce9178;">'http'</span>);</div><br><div><span style="color: #4ec9b0;">http</span>.<span style="color: #dcdcaa;">createServer</span>(<span style="color: #569cd6;">function</span>&nbsp;(<span style="color: #9cdcfe;">request</span>,&nbsp;<span style="color: #9cdcfe;">response</span>)&nbsp;{</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">response</span>.<span style="color: #dcdcaa;">writeHead</span>(<span style="color: #b5cea8;">200</span>,&nbsp;{&nbsp;<span style="color: #ce9178;">'Content-Type'</span>:&nbsp;<span style="color: #ce9178;">'text/plain'</span>&nbsp;});</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">response</span>.<span style="color: #dcdcaa;">end</span>(<span style="color: #ce9178;">'Am&nbsp;I&nbsp;really&nbsp;running&nbsp;a&nbsp;server?!'</span>);</div><div>}).<span style="color: #dcdcaa;">listen</span>(<span style="color: #b5cea8;">6666</span>,&nbsp;<span style="color: #ce9178;">'127.0.0.1'</span>);</div><br><div><span style="color: #9cdcfe;">console</span>.<span style="color: #dcdcaa;">log</span>(<span style="color: #ce9178;">'running&nbsp;server!'</span>);</div><br><br><div><span style="color: #6a9955;">//&nbsp;ES&nbsp;Module</span></div><br><div><span style="color: #c586c0;">import</span>&nbsp;{&nbsp;<span style="color: #9cdcfe;">createServer</span>&nbsp;}&nbsp;<span style="color: #c586c0;">from</span>&nbsp;<span style="color: #ce9178;">'http'</span>;</div><br><div><span style="color: #dcdcaa;">createServer</span>(<span style="color: #569cd6;">function</span>&nbsp;(<span style="color: #9cdcfe;">request</span>,&nbsp;<span style="color: #9cdcfe;">response</span>)&nbsp;{</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">response</span>.<span style="color: #dcdcaa;">writeHead</span>(<span style="color: #b5cea8;">200</span>,&nbsp;{&nbsp;<span style="color: #ce9178;">'Content-Type'</span>:&nbsp;<span style="color: #ce9178;">'text/plain'</span>&nbsp;});</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">response</span>.<span style="color: #dcdcaa;">end</span>(<span style="color: #ce9178;">'Am&nbsp;I&nbsp;really&nbsp;running&nbsp;a&nbsp;server?!'</span>);</div><div>}).<span style="color: #dcdcaa;">listen</span>(<span style="color: #b5cea8;">6666</span>,&nbsp;<span style="color: #ce9178;">'127.0.0.1'</span>);</div><br><div><span style="color: #9cdcfe;">console</span>.<span style="color: #dcdcaa;">log</span>(<span style="color: #ce9178;">'running&nbsp;server!'</span>);</div><br></div><p><br></p><p><br></p><p>3. main이 될 함수를 만들고 sub파일에서 모듈처럼 불러오려면 아래와 같은 구조로 만들어야 한다.</p><div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px; white-space: pre;"><div><span style="color: #6a9955;">//&nbsp;module</span></div><div><span style="color: #569cd6;">const</span>&nbsp;rsa_helper&nbsp;=&nbsp;{</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #dcdcaa;">test</span>:&nbsp;<span style="color: #569cd6;">function</span>&nbsp;()&nbsp;{</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">console</span>.<span style="color: #dcdcaa;">log</span>(<span style="color: #ce9178;">'test&nbsp;call!!'</span>)</div><div>&nbsp;&nbsp;&nbsp;&nbsp;}</div><div>}</div><br><div><span style="color: #c586c0;">export</span>&nbsp;<span style="color: #c586c0;">default</span>&nbsp;rsa_helper</div></div><p><br></p><div style="color: rgb(212, 212, 212); background-color: rgb(30, 30, 30); font-family: Consolas, &quot;Courier New&quot;, monospace; font-size: 14px; line-height: 19px; white-space: pre;"><div><span style="color: #6a9955;">//&nbsp;main</span></div><div><span style="color: #6a9955;">//&nbsp;node&nbsp;14부터는&nbsp;require가&nbsp;기본이&nbsp;아니다</span></div><div><span style="color: #6a9955;">//&nbsp;https://stackoverflow.com/questions/31931614/require-is-not-defined-node-js</span></div><div><span style="color: #c586c0;">import</span>&nbsp;{&nbsp;<span style="color: #9cdcfe;">createRequire</span>&nbsp;}&nbsp;<span style="color: #c586c0;">from</span>&nbsp;<span style="color: #ce9178;">'module'</span>;</div><div><span style="color: #569cd6;">const</span>&nbsp;require&nbsp;=&nbsp;<span style="color: #dcdcaa;">createRequire</span>(<span style="color: #c586c0;">import</span>.<span style="color: #9cdcfe;">meta</span>.url);</div><br><div><span style="color: #c586c0;">import</span>&nbsp;<span style="color: #9cdcfe;">rrsa</span>&nbsp;<span style="color: #c586c0;">from</span>&nbsp;<span style="color: #ce9178;">'./rsa-helper.js'</span></div><br><div><span style="color: #569cd6;">function</span>&nbsp;<span style="color: #dcdcaa;">main</span>&nbsp;()&nbsp;{</div><div>&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #c586c0;">try</span>&nbsp;{</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">rrsa</span>.<span style="color: #dcdcaa;">test</span>()</div><div>&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;<span style="color: #c586c0;">catch</span>&nbsp;(<span style="color: #9cdcfe;">error</span>)&nbsp;{</div><div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="color: #9cdcfe;">console</span>.<span style="color: #dcdcaa;">error</span>(<span style="color: #9cdcfe;">error</span>)</div><div>&nbsp;&nbsp;&nbsp;&nbsp;}</div><div>}</div><br><div><span style="color: #dcdcaa;">main</span>()</div></div><p><br></p><p>4. F5 키를 눌러서 디버깅 하려면 launch.json 파일을 만들고 nodejs를 선택하자.&nbsp;</p><p><br></p><p><br></p><p><br></p><p><br></p><p><br></p><p><br></p><p><br></p>

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