Cloudflare Developers•12mo ago

Can Workers Function use npm packages that use node apis?

I want to use the npm package thirty-two (https://www.npmjs.com/package/thirty-two). It was last published 7 years ago seems to use the Buffer api in node. In wrangler.toml, setting compatibility_flags = [ "nodejs_compat" ] was not enough. I also had to mutate globalThis. Is there a cleaner way to do this? What is the recommended approach to using npm packages that use node apis without an import with the node specifier (eg. import { Buffer } from 'node:buffer)

import * as base32 from 'thirty-two';
import { Buffer } from 'node:buffer';

export default {
    async fetch(request: Request, env: {}, ctx: ExecutionContext): Promise<Response> {
        globalThis.Buffer = Buffer;
        const data = {
            encode: base32.encode('node').toString(),
            decode: base32.decode('NZXWIZI=').toString(),
        };
        return new Response(JSON.stringify(data, null, 2));
    },
};

import * as base32 from 'thirty-two';
import { Buffer } from 'node:buffer';

export default {
    async fetch(request: Request, env: {}, ctx: ExecutionContext): Promise<Response> {
        globalThis.Buffer = Buffer;
        const data = {
            encode: base32.encode('node').toString(),
            decode: base32.decode('NZXWIZI=').toString(),
        };
        return new Response(JSON.stringify(data, null, 2));
    },
};

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Can Workers Function use npm packages that use node apis?