Ran wrangler dev and it doesn't seem to bind Worker KV:
ERROR in /src/handler.ts
./src/handler.ts 16:8-17
[tsl] ERROR in /src/handler.ts(16,9)
TS2304: Cannot find name 'generalKV'.
Here is handler.ts:
async function postHandler(request: Request): Promise<Response> {
let content = JSON.stringify(await request.json());
await generalKV.put([Date.now().toString()], JSON.stringify(content));
return new Response(content);
}
wrangler.toml:
name = "general-assignment"
type = "javascript"
account_id = "<id>"
workers_dev = true
compatibility_date = "2021-11-01"
kv_namespaces = [
{ binding = "generalKV", id = "<id>", preview_id = "<id>" }
]
Some suggests change kv_namespaces to kv-namespaces, but it doesn't work for me. Please inform me if I missed anything else.
For readers that come to this question via Google and use Wrangler v2 and get this error:
Uncaught (in promise) ReferenceError: MY_KV is not defined
The tutorials and examples neglect a second parameter (and a third parameter). This second parameter holds the environment. You can use and bind to kv with these steps:
# Create the KV namespaces
wrangler kv:namespace create "MY_KV" &&\
wrangler kv:namespace create "MY_KV" --preview
wrangler complains if there is no preview KV, so create them both. Next, create a kv_namespaces array entry and duplicate the preview_id in the default (dev) section (denoted as yyyy below).
# wrangler.toml
name = "worker"
main = "src/index.js"
compatibility_date = "2022-04-14"
account_id = "...."
workers_dev = true
routes = [
"exmample.com/*"
]
# Duplicate preview_id to id
kv_namespaces = [
{ binding = "MY_KV", preview_id = "yyyy", id = "yyyy" }
]
# Run `wrangler publish --env production` when happy
[env.production]
kv_namespaces = [
{ binding = "MY_KV", id = "xxxx" }
]
You can then bind to kv like so:
# index.js
export default {
async fetch(request, env) {
...
const someKV = env.MY_KV.get("some-key");
...
}
Did you already manually create the KV namespace on Cloudflare? I don't believe it creates them dynamically from the binding setup in worker (yet).
Documentation for creating via Wrangler -
https://developers.cloudflare.com/workers/cli-wrangler/commands#create