ethers.js: cloudflare worker fails with some parameters that ethers.js harcode

This is now available in v5.6. I’ve tried it out and am loving Cloudflare Workers.

To use it, connect to your provider setting the skipFetchSetup flag:

const provider = new StaticJsonRpcProvider({
 url: URL,
 skipFetchSetup: true
});

Let me know if you have any issues!

@wighawag Wow, thank you! I am using webpack and this is my webpack config, based on your suggestion:

module.exports = {
    target: "webworker",
    entry: "./src/index.js",
    mode: "production",
    module: {
        rules: [
            {
                test: /\.(mjs|js|jsx)$/,
                exclude: /node_modules/,
                loader: "babel-loader",
                options: {
                    presets: [
                        "@babel/preset-env",
                        {
                            plugins: [
                                "@babel/plugin-proposal-class-properties"
                            ]
                        }
                    ]
                },
            },
            {
                test: /\.js$/,
                loader: 'string-replace-loader',
                options: {
                    multiple: [
                        { search: 'request.mode = "cors";', replace: '/* request.mode = "cors"; */' },
                        { search: 'request.cache = "no-cache";', replace: '/* request.cache = "no-cache"; */' },
                        { search: 'request.credentials = "same-origin";', replace: '/* request.credentials = "same-origin"; */' },
                        { search: 'request.referrer = "client";', replace: '/* request.referrer = "client"; */' }
                    ]
                }
            }
        ],
    }
};

I needed to install string-replace-loader webpack loader and everything worked out of the box, amazing.

Thank you @wighawag and thank you @ricmoo for the amazing package.

Yeah, I messed up an didn’t expose it high enough up. I might have to make another minor bump to expose it. I was hoping to get v6 out sooner too though. Let me look into this.

@DanielAGW

as a workaround I perform a post-process step after build :

    let content = fs.readFileSync('dist/index.mjs').toString();
    content = content.replace('mode: "cors"', '//mode: "cors"');
    content = content.replace('cache: "no-cache"', '//cache: "no-cache"');
    content = content.replace('credentials: "same-origin"', '//credentials: "same-origin"');
    content = content.replace('referrer: "client"', '//referrer: "client"');
    fs.writeFileSync('dist/index.mjs', content);

Note: using esbuild to generate dist/index.mjs

I think that it has been fixed by @ricmoo but not included in an NPM version.

Ugh. 😦

The problem is allowing them to be overrides would balloon the size of the code, as those would all need non-default behaviours implemented in the node getUrl functions.

They are the default values, so I am inclined to remove them and let the defaults take over, but that may break something else. I need to investigate this further.

Ideally, Cloudflare would ignore values if they are the default. 😒