Environment info

firebase-tools: 15.12.0
Platform: Linux (WSL2, also reproduces on GitHub Actions Ubuntu runners)
dataconnect-emulator: 3.3.1 (bundled with firebase-tools 15.12.0)

Bug description

firebase dataconnect:sdk:generate fails with a Go template error in dataconnect-emulator-3.3.1. The ImportsTS template function now requires 2 arguments (the second being ClientCache), but the emulator only passes 1.

Steps to reproduce

1. Install firebase-tools@15.12.0
2. Have a connector.yaml with javascriptSdk configured (with or without clientCache: {})
3. Run firebase dataconnect:sdk:generate

Error output

I0331 17:06:10.835010 jsgen.go:146] Embedded file index.d.ts.go.tmpl
E0331 17:06:16.627776 generate_cmd.go:51] Failed to generate SDKs:
[connector "deliverables" javascriptSdk]: failed to generate sources:
failed to parse template: template: index.d.ts.go.tmpl:4:12: executing "index.d.ts.go.tmpl" at <ImportsTS>: wrong number of args for ImportsTS: want 2 got 1

Error: An unexpected error has occurred.

Investigation

Running the emulator with verbose logging (-v=5) confirms:

• The emulator reads clientCache from connector.yaml correctly:

  "ClientCache": { "MaxAge": "", "MaxSize": "", "Storage": "" }
  

• But it does not propagate the ClientCache value to the ImportsTS Go template function

The Go template index.d.ts.go.tmpl at line 4 calls ImportsTS which now expects 2 arguments (OperationsUsed and ClientCache), but only receives 1.

Workaround

Pin firebase-tools to 15.11.0, which bundles dataconnect-emulator-3.3.0 (the template works correctly in 3.3.0).

npm install -g firebase-tools@15.11.0

connector.yaml (minimal reproduction)

connectorId: myConnector
generate:
  javascriptSdk:
    - outputDir: ./generated
      package: "@myapp/generated"
      packageJsonDir: .
      clientCache: {}

Expected behaviour

SDK generation should succeed, as it does with dataconnect-emulator-3.3.0.

Actual behaviour

SDK generation fails with the ImportsTS template error regardless of whether clientCache is present in connector.yaml.