Cron268 words
morning. Crons can be configured with cron syntax, or simple intervals like “once an hour” Functions can run up to once every 15 minutes, or once a minute, with the
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Cron
morning. Crons can be configured with cron syntax, or simple intervals like “once an hour” Functions can run up to once every 15 minutes, or once a minute, with the
Type Signature
anything as a result. The return value is ignored. ExampleRun in Val Town ↗ export function cronValHandler(interval: Interval) { console.log("Cron val ran!"); } The Interval type has the following shape:
Email268 words
team emails to Discord / Slack. Tip. Vals can send email, too! Using the email function in the standard library. Type Signature. Section titled “Type Signature” Files triggered by Email
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team emails to Discord / Slack. Tip. Vals can send email, too! Using the email function in the standard library.
Type Signature
Type Signature. Section titled “Type Signature” Files triggered by Email receive an argument called Email that represents the email that was sent. Here’s an example: Example export async function emailValHandler(email:
Receiving a GitHub Webhook369 words
of your webhook. Securing GitHub Webhooks. Section titled “Securing GitHub Webhooks” Once public, your val function will listen for any payload sent to its endpoint. For security reasons, you probably
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Securing GitHub Webhooks
GitHub Webhooks” Once public, your val function will listen for any payload sent to its endpoint. For security reasons, you probably want to limit requests to those coming from GitHub.
Send Discord message via webhook129 words
body: JSON.stringify({ content }), }); if (text.length) throw Error("Discord Webhook error: " + text); }; You can browse example usages of this function here. Example Integration. Section titled “Example Integration”
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Send Discord message via webhook
throw Error("Discord Webhook error: " + text); }; You can browse example usages of this function here.
RSS153 words
"https://esm.town/v/std/email?v=9"; import { newRSSItems } from "https://esm.town/v/stevekrouse/newRSSItems"; import { rssFeeds } from "https://esm.town/v/stevekrouse/rssFeeds"; export async function pollRSSFeeds({ lastRunAt }: Interval) { return Promise.all( Object.entries(rssFeeds).map(async ([name, url]) => { let items
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Polling RSS
"https://esm.town/v/std/email?v=9"; import { newRSSItems } from "https://esm.town/v/stevekrouse/newRSSItems"; import { rssFeeds } from "https://esm.town/v/stevekrouse/rssFeeds"; export async function pollRSSFeeds({ lastRunAt }: Interval) { return Promise.all( Object.entries(rssFeeds).map(async ([name, url]) => { let items
ORMs206 words
Prisma. Section titled “Prisma” 🚫 Prisma isn’t supported in Val Town because it relies on functionality that only exists in a classic server environment. Sequelize. Section titled “Sequelize” 🚫 Sequelize
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Prisma
Prisma. Section titled “Prisma” 🚫 Prisma isn’t supported in Val Town because it relies on functionality that only exists in a classic server environment.
Importing701 words
mind, and won’t work with Deno. While Deno implements most of the functionality of Node.js and some of the functionality of browsers - so many modules will “just work” in
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Look for Deno compatibility
mind, and won’t work with Deno. While Deno implements most of the functionality of Node.js and some of the functionality of browsers - so many modules will “just work” in
Stripe741 words
@ts-ignore. import { Stripe } from "npm:stripe"; const stripe = new Stripe(Deno.env.get("STRIPE_TEST_API_KEY")); export default async function (req: Request): Promise<Response> { const url = new URL(req.url); if (url.pathname === "/") {
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Stripe Checkout
@ts-ignore. import { Stripe } from "npm:stripe"; const stripe = new Stripe(Deno.env.get("STRIPE_TEST_API_KEY")); export default async function (req: Request): Promise<Response> { const url = new URL(req.url); if (url.pathname === "/") {
Example Val Town Stripe Webhook
from "npm:stripe"; const stripe = new Stripe( Deno.env.get("stripe_sk_customer_readonly") as string, { apiVersion: "2020-08-27", } ); function getStripeCustomer(customerId: string) { return stripe.customers.retrieve(customerId); } export let newStripeEvent = async (req: Request) =>
Permission errors345 words
to your secrets (--allow-env). Some system information (--allow-sys=osRelease,homedir,cpus,hostname) This allows you to access the following functionality: import os from "node:os"; os.cpus(); os.homedir(); Deno.osRelease(); Deno.hostname(); These values are not particularly useful,
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Allowed permissions
to your secrets (--allow-env). Some system information (--allow-sys=osRelease,homedir,cpus,hostname) This allows you to access the following functionality: import os from "node:os"; os.cpus(); os.homedir(); Deno.osRelease(); Deno.hostname(); These values are not particularly useful,
Upgrade Guide: Safer Val Scopes378 words
is deprecated and we now use blob storage with our std/blob library instead. The equivalent function to std.set() is blob.setJSON(). // Using std/set. import { set } from "https://esm.town/v/std/set"; set("createdAt",
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Use Blob Storage Instead (recommended)
Use Blob Storage Instead (recommended). Section titled “Use Blob Storage Instead (recommended)” Std/set is deprecated and we now use blob storage with our std/blob library instead. The equivalent function to
