start over with nextjs

lib/renderer.ts

@@ -0,0 +1,51 @@
+import { mkdir, writeFile } from 'fs'
+import { spawn } from 'child_process'
+import { v1 as uuidv1 } from 'uuid'
+
+import { getDirPath, getDocPath } from './utils';
+
+
+function copyToTemp(id: string, texDocument: string): Promise<string> {
+    return new Promise((resolve, reject) => {
+        const dirPath = getDirPath(id);
+
+        mkdir(dirPath, (err) => {
+            if (err) {
+                reject(err);
+                return;
+            }
+
+            const docPath = getDocPath(id);
+            writeFile(docPath, texDocument, (err) => {
+                if (err) {
+                    reject(err);
+                }
+                resolve(id);
+            });
+        });
+    });
+}
+
+function generateDoc(id: string) {
+    return new Promise((resolve, reject) => {
+        const pdflatex = spawn('pdflatex', ['-interaction', 'nonstopmode', getDocPath(id)], { cwd: getDirPath(id) });
+        pdflatex.stderr.on('data', (data) => {
+            console.error('onData', data);
+        });
+
+        pdflatex.on('close', (code) => {
+            if (code > 0) {
+                reject(`pdflatex returned with code ${code}`);
+                return;
+            }
+            console.log(`PDF ${id} generated`);
+            resolve(id);
+        });
+    });
+}
+
+export default function(texDocument: string) {
+    const id = uuidv1();
+    return copyToTemp(id, texDocument)
+        .then(generateDoc);
+};