Workers KV get throws TypeError: Cannot read properties of undefined (reading 'get')

My wrangler.toml file looks like this:

kv_namespaces = [
  { binding = "BH_API_KEYS", id = "xxx" },
]

kv_namespaces = [
  { binding = "BH_API_KEYS", id = "xxx" },
]

In my index.ts file I have:

export interface Env {
    BH_API_KEYS: KVNamespace;
}

...
export default {
    async email(message: any, env: Env, ctx: ExecutionContext) {
            const testApiKey = await env.BH_API_KEYS.get("testId");
...

export interface Env {
    BH_API_KEYS: KVNamespace;
}

...
export default {
    async email(message: any, env: Env, ctx: ExecutionContext) {
            const testApiKey = await env.BH_API_KEYS.get("testId");
...

This code results in the error:

TypeError: Cannot read properties of undefined (reading 'get'

TypeError: Cannot read properties of undefined (reading 'get'

I have verified that my namespace with the given ID exists and is named like

worker-name_namespace-name

worker-name_namespace-name

. Why isn't my worker able to access my KV?

3 Replies

emilycheyne•4mo ago

If it's relevant I am using

wrangler 3.31.0

wrangler 3.31.0

kian•4mo ago

You probably have kv_namespaces under a TOML table so it’s not actually binding any namespaces

emilycheyne•4mo ago

hmm, i am not sure what you mean. This is what my entire wrangler.toml file looks like:

name = "vms-receiver-email-camect"
main = "src/index.ts"
compatibility_date = "2024-03-04"

# Bind a KV Namespace. Use KV as persistent storage for small key-value pairs.
# https://dash.cloudflare.com/946e6bcae03c19645421637bc83c9232/workers/kv/namespaces/65a1763d5ec540ad9c46c8495f5623ae
kv_namespaces = [
  { binding = "BH_API_KEYS", id = "xxx" }
]

name = "vms-receiver-email-camect"
main = "src/index.ts"
compatibility_date = "2024-03-04"

# Bind a KV Namespace. Use KV as persistent storage for small key-value pairs.
# https://dash.cloudflare.com/946e6bcae03c19645421637bc83c9232/workers/kv/namespaces/65a1763d5ec540ad9c46c8495f5623ae
kv_namespaces = [
  { binding = "BH_API_KEYS", id = "xxx" }
]

Ah, thanks for the hint! I changed the binding to: [[kv_namespaces]] binding = "BH_API_KEYS" id = "xxx" and everything is working as expected

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Workers KV get throws TypeError: Cannot read properties of undefined (reading 'get')