Catalog app · RISC-V VM · runs on Node.js

Run eslint in the browser

Find and fix problems in JavaScript code with the real ESLint and your own rules.

Try it live

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catalog app

Run ESLint on the RISC-V Node.js

Installs the RISC-V node and the ESLint tree from the signed catalog, then runs ESLint's CLI with /usr/bin/node on the emulator (1.8 GB guest).

bash

/usr/bin/node /usr/local/lib/node_modules/eslint/bin/eslint.js --version

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Expected output

$ /usr/bin/node /usr/local/lib/node_modules/eslint/bin/eslint.js --version
v10.0.0

What it is

ESLint statically analyses JavaScript and reports rule violations such as unused variables, unreachable code or style issues, and can auto-fix many of them. The catalog package is the unmodified ESLint 10 npm tree (installed under /usr/local/lib/node_modules); it needs a Node.js runtime. On NanoVM it runs on the catalog's RISC-V Node.js.

Package facts

version: 10.0.0
runs on: RISC-V VM (elf-app, riscv64gc-linux-musl)
download: 2.4 MB compressed · 1088 files
command: eslint
requires: node
license: MIT (upstream)
upstream: github.com/eslint/eslint
collections: Node dev toolchain
catalog: generation 12, Ed25519-signed

Install and run it from your page

With the SDK, installApp resolves eslint in the signed index, fetches its content-addressed chunks from the CDN, verifies each one and writes the files into the VM. It is a JavaScript program, so it needs a Node.js runtime: install the catalog's node and run it on the RISC-V VM, or run its entry script with nano.node() on the host JavaScript engine where that engine supports it. Details in Installing catalog apps.

javascript

import { createNano } from "@userland-run/nano-sdk";

// JS tools run on the RISC-V node: keep the default ~1.8 GB guest.
const nano = await createNano({ image: { wasm: "/nano/console.wasm" } });
await nano.installApp("node");
await nano.installApp("eslint"); // signature-verified, cached in OPFS

const r = await nano.shExec("/usr/bin/node /usr/local/lib/node_modules/eslint/bin/eslint.js --version");
console.log(r.stdout);

Typical usage of the upstream command-line tool: