PrismaP
Prisma•14mo ago•
6 replies
PingZing

Declaring a PrismaClient with conditional logging

Hi folks! I'm trying to instantiate a PrismaClient in a TypeScript project. I'm using v6.0.1, and have the following code:

export class DatabaseClient {
  private _prismaClient;

  constructor(databaseUrl: string, appInsightsClient?: appInsights.TelemetryClient) {
    const logDefinitions: Prisma.LogDefinition[] = [
      {
        level: "error",
        emit: "event",
      },
      {
        level: "warn",
        emit: "event",
      },
    ];

    this._prismaClient = new PrismaClient({
      datasourceUrl: databaseUrl,
      log: logDefinitions,
    });

    if (someCondition) {
      this._prismaClient.$on("error", (evt: Prisma.LogEvent) => {
        // Do som error logging stuff
      });
    }
  }


Unfortunately, on the line where I set up the error logging, I get the following error: 
Argument of type '"error"' is not assignable to parameter of type 'never'.


I can fix that if I declare my array of 
LogDefinition
s inline with the 
PrismaClient
 but I'd like to conditionally set up my log levels, which means I can't do everything inline. Is there a way around this?
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