initial commit

.gitignore

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+node_modules/
+yarn.lock
+package.json.lock

README.md

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 # ngrok-to-dotenv
+
+ngrok-to-dotenv is a node cli tool that you can use with projects that need ngrok. You clone it into your project's folder, and setup a package.json script to call "cd ngrok-to-dotenv && node ngrok"

ngrok.js

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+const ngrok = require('ngrok');
+const fs = require('fs');
+const { exec } = require("child_process");
+
+const dotenvFile = '../.env'
+
+// Read the .env file
+fs.readFile(dotenvFile, 'utf8', (err, data) => {
+	if (err) {
+		console.error(err);
+		return;
+	}
+
+    // Convert string to string array, split at newlines
+    let lines = data.split('\n') // string[]
+    let token = null; // string || null
+
+    // find the auth token
+    lines.forEach(element => {
+        const [name, value] = element.split('=');
+        if (name === 'NGROK_AUTHTOKEN')
+            token = value;
+    });
+
+    // No token found
+    if (!token) {
+        console.error("Setup NGROK_AUTHTOKEN in your .env file")
+        return;
+    }
+
+    // Start ngrok
+	(async function () {
+		const url = await ngrok.connect({ authtoken: token, proto: 'http', addr: 3000 });
+
+        // Rebuild lines with the new url
+        lines = lines.map(element => {
+            const [name] = element.split('=');
+            if (name === 'NGROK_SERVERHOST')
+                return `${name}=${url}`
+            return element;
+        })
+
+        // convert back to string format
+        let writeData = ''
+        lines.forEach(element => {
+            writeData += element + '\n'
+        })
+        writeData = writeData.slice(0, writeData.length - 1);
+
+        // Write the new .env file
+        fs.writeFile(dotenvFile, writeData, (err) => {
+            if (err) {
+                console.error(err);
+                return;
+            }
+            console.clear();
+            console.log(`Your current ngrok url is ${url}.`);
+            console.log(`Your .env file has been updated.`);            
+          });		
+	})();
+});

package.json

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+{
+  "name": "ngrok-to-dotenv",
+  "version": "1.0.0",
+  "description": "ngrok start-up wrapper that uses a dotenv file to get the authtoken and save the https address",
+  "main": "ngrok.js",
+  "license": "MIT",
+	"scripts": {
+		"test": "echo \"Error: no test specified\" && exit 1",
+		"debug": "node --inspect ngrok.js",
+		"start": "node ngrok"
+	},  
+  "dependencies": {
+    "ngrok": "^4.2.2"
+  }
+}