Cloudflare workers does not have global environment variables. Instea…

…d they are passed into an entrypoint function. These varibales are always available on c.env regardless of environment through. This branch adds the ability to specify LOG_LEVEL as an environment variable and have it respected by the loggers produced in this package

src/middleware.ts

@@ -12,10 +12,13 @@ import type { LiteralString } from "./utils";
 export const pinoLogger = <ContextKey extends string = "logger">(
   opts?: Options<LiteralString<ContextKey>>,
 ): MiddlewareHandler<Env<ContextKey>> => {
-  const rootLogger = isPino(opts?.pino) ? opts.pino : pino(opts?.pino);
-  const contextKey = opts?.contextKey ?? ("logger" as ContextKey);
-
   return async (c, next) => {
+    const rootLogger = isPino(opts?.pino) ? opts.pino : pino(opts?.pino);
+    const contextKey = opts?.contextKey ?? ("logger" as ContextKey);
+
+    // use LOG_LEVEL environemnt variable if set
+    rootLogger.level = c.env.LOG_LEVEL ?? rootLogger.level;
+
     const logger = new PinoLogger(rootLogger);
     c.set(contextKey, logger);
 

src/types.ts

@@ -291,6 +291,9 @@ export type HttpLoggerOptions = {
  * ```
  */
 export type Env<LoggerKey extends string = "logger"> = {
+  Bindings: {
+    LOG_LEVEL?: string;
+  };
   Variables: {
     [key in LoggerKey]: PinoLogger;
   };