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delta

•Created by delta on 2/28/2025 in #workers-help

TypeError: Illegal invocation: function called with incorrect this reference

I got this error when calling some method from generated api client. when class looks like this:

class API {
    constructor(
        options?: {
            fetch?: typeof fetch;
        }
    ) {
        this.fetch = options?.fetch ?? globalThis.fetch;
    }
}

class API {
    constructor(
        options?: {
            fetch?: typeof fetch;
        }
    ) {
        this.fetch = options?.fetch ?? globalThis.fetch;
    }
}

and doing (new API()).callMethod() will raise the error. after some searching, I found different context makes this problem and this can be solved by passing fetch to fetch.bind(globalThis), which binds fetch's context to global context. What I don't understand yet is why API works on browser and node, but Worker needs to bind globalThis to fetch.

1 replies

CDCloudflare Developers

•Created by delta on 8/5/2024 in #workers-help

verify r2 upload using hash

I'm trying to implement a user file upload system with hash and size verification, along with streaming uploads to R2. The challenge I'm facing is that Workers have a 128MB memory limit, so I can't buffer the entire request. so I need to stream the upload to R2, but I'm struggling to find a way to cancel the upload if hash unmatched or size is not correct. Any suggestions on how to approach this would be really helpful. Thank you!

2 replies

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