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Jk3ndo

•Created by Jk3ndo on 4/22/2025 in #workers-help

Cloudflare D1 Database is not recognized as it inside a worker

Hello guys, I have created a worker which helps me to execute a cron which read data from a specific KV, and for each of those data make an API call and save the result into a database. The response saved match the following interface:

export interface IWebsiteVerificationReport {
    domain: string,
    slug: string,
    verification: string,
    status: boolean,
    message: string,
    sanityDocId: string,
    audience: string,
    location?: string,
    runAt?: Date
}

export interface IWebsiteVerificationReport {
    domain: string,
    slug: string,
    verification: string,
    status: boolean,
    message: string,
    sanityDocId: string,
    audience: string,
    location?: string,
    runAt?: Date
}

I have created a class to handle the database related operations and it was working very well. see database file. So as I said it was working very well, but as API call was too much I decided to include a Durable object to execute my API calls in queue. I added then the following line to the entry point file:

export { RequestQueue } from "./storage/requestQueue";

export { RequestQueue } from "./storage/requestQueue";

And for my d1 and durable object configuration in my wrangler toml I added those lines:

durable_objects.bindings = [{ name = "REQUEST_QUEUE", class_name = "RequestQueue" }]

d1_databases = [
  { binding = "DB", database_name = "lightmode-store", database_id = "c1766ce5-234c-401b-a854-d614c5c1d300" },
]

[[migrations]]
tag = "v1"
new_classes = ["RequestQueue"]
new_databases = ["lightmode-store"]

durable_objects.bindings = [{ name = "REQUEST_QUEUE", class_name = "RequestQueue" }]

d1_databases = [
  { binding = "DB", database_name = "lightmode-store", database_id = "c1766ce5-234c-401b-a854-d614c5c1d300" },
]

[[migrations]]
tag = "v1"
new_classes = ["RequestQueue"]
new_databases = ["lightmode-store"]

However, after having added the durable object to it, at the step of the database insertion data I get the error "Error: TypeError: dba.prepare is not a function". When I stringify the D1 database to inspect it I get the following object:

{
  "alwaysPrimarySession": {
    "fetcher": {},
    "bookmarkOrConstraint": "first-primary"
  },
  "fetcher": {}
}

{
  "alwaysPrimarySession": {
    "fetcher": {},
    "bookmarkOrConstraint": "first-primary"
  },
  "fetcher": {}
}

Can someone help me resolve the issue please ? Thanks,

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