@ngrok/ngrok-api
v0.13.0
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Unstable
This library is currently unstable. We know of rough edges and are working to bring it to parity with our other API client libraries. Please feel free to try it out and let us know if you find it useful!
ngrok API client library for JavaScript and TypeScript
This library wraps the ngrok HTTP API to make it easier to consume in JavaScript or TypeScript.
Installation
The published library is available on npm.
npm install @ngrok/ngrok-api
Support
The best place to get support using this library is through the ngrok Slack Community. If you find any bugs, please contribute by opening a new GitHub issue.
Documentation
A quickstart guide and a full API reference are included in the ngrok TypeScript API documentation
Quickstart
After you've installed the package, you'll need an API Key. Create one on the API Keys page of your ngrok dashboard.
In your application's code, initialize an Ngrok
client object with an API
key. API resources can be accessed as properties of the Ngrok
object.
import { Ngrok } from '@ngrok/ngrok-api';
const ngrok = new Ngrok({
apiToken: '<API KEY>',
});
const domain = await ngrok.domains.create({
name: 'your-name.ngrok.io',
});
console.log(domain);
Automatic Paging
The ngrok API pages all list resources but this library abstracts that
implementation detail away from you. list()
methods will return collections
that can be iterated over and the implementation will fetch the pages from the
API for you behind the scenes.
import { Ngrok } from '@ngrok/ngrok-api';
const ngrok = new Ngrok({
apiToken: '<API KEY>',
});
(await ngrok.tunnels.list()).forEach(t => console.log(t));
Async Programming
All API methods return a Promise
and are suitable for use in asynchronous
programming. You can use callback chaining with .then()
and .catch()
syntax
or the await
keyword to wait for completion of an API call.
// await style
const cred = await ngrok.credentials.create({ description: 'example' });
console.log(cred);
// callback chaining
ngrok.credentials.create({ description: 'example' }).then(cred => {
console.log(cred);
});
Error Handling
The ngrok API returns detailed information when an API call fails. If an error
is encountered, API methods throw the rich Error
type on resolution of a
returned Promise
. This allows your code to gracefully handle different error
conditions.
The Error
type includes a statusCode
property which can be used to
distinguish not found errors when a resource does not exist:
import { Error } from '@ngrok/ngrok-api';
try {
await ngrok.ipPolicies.update({
id: 'someInvalidId',
description: 'updated description',
});
} catch (err: Error) {
if (err.statusCode == 404) {
console.log('no ip policy with that id to update');
}
}
Every error returned by the ngrok API includes a unique, documented error
code that you can use to distinguish unique
error conditions. Use the errorCode
property in your application code to
handle handle different error conditions.
import { Error } from '@ngrok/ngrok-api';
try {
await ngrok.ipPolicies.create({
action: 'something invalid',
});
} catch (err: Error) {
if (err.errorCode == 'ERR_NGROK_1410') {
console.log('not a valid ip policy action');
} else {
console.log('some other error', err);
}
}