n8n-nodes-deno-code

This is an n8n community node. It lets you use Deno in your n8n workflows.

Deno is the open-source JavaScript runtime for the modern web. Built on web standards with zero-config TypeScript, unmatched security, and a complete built-in toolchain, Deno is the easiest, most productive way to JavaScript.

n8n is a fair-code licensed workflow automation platform.

Installation
Operations
Compatibility
Usage
Resources

Installation

Follow the installation guide in the n8n community nodes documentation.

Operations

• Execute TypeScript code in Deno runtime
• Allows you to import any of thousands of Deno and npm libraries
• Support modes like in Code node: "Run Once for All Items" or "Run Once for Each Item"
• Support Sequential or Parallel execution for input items
• Support Deno Permissions

Compatibility

• Tested against n8n version: 1.37.3
• Tested against Deno version: 1.42.4

Docker

Deno code Node does not work in the original n8nio/n8n - Docker Image.

The libraries required for Deno need to be installed in the container.

This can be done as follows: Dockerfile. The source of the solution: Deno Alpine Dockerfile.

ARG N8N_VERSION

FROM gcr.io/distroless/cc as cc

FROM n8nio/n8n:${N8N_VERSION}

USER root

# from: https://github.com/denoland/deno_docker/blob/4d61d7da8e7350ee31862d1a5e6268993f4dd1ff/alpine.dockerfile#L22
COPY --from=cc --chown=root:root --chmod=755 /lib/*-linux-gnu/* /usr/local/lib/
COPY --from=cc --chown=root:root --chmod=755 /lib/ld-linux-* /lib/

RUN mkdir -p /lib64 \
    && ln -sf /usr/local/lib/ld-linux-* /lib64/ \
    && rm -f /usr/local/lib/libgcc_s.so.1

ENV LD_LIBRARY_PATH="/usr/local/lib"

USER node

Usage

Generate id with nanoid | Deno

const { nanoid } = await import("https://deno.land/x/[email protected]/mod.ts");

return {
  id: nanoid()
}

Slugify blog title with slug | Deno

const { slug } = await import("https://deno.land/x/[email protected]/mod.ts");

return {
  ...$json,
  slug: slug($json.title),
}

Generate mock data with deno_mock | Deno

const Mock = (await import("https://deno.land/x/[email protected]/mod.ts")).default;

var tpl = {
  "list|1-4": [{
    "id|+1": 1,
    "email": "@EMAIL",
  }],
};

return Mock.mock(tpl).list;

Resources

• n8n community nodes documentation
• Deno, the next-generation JavaScript runtime
• kt3k/deno-bin: Use Deno via npm
• casual-simulation/node-deno-vm: A VM module for Node.js that utilizes the secure environment provided by Deno