LogLayer

Deno Integration ​

LogLayer has support for the Deno runtime.

Deno Compatibility

Not all transports and plugins are compatible with Deno. Some items that rely on Node.js-specific APIs (like file system operations or native modules) may not work in Deno. Items that have been tested with Deno are marked with a Deno badge.

Not all items have been tested with Deno; a lack of a badge does not imply a lack of support. Please let us know if you do find a transport / plugin is supported.

Installation ​

Using npm: Specifier ​

The recommended way to use LogLayer with Deno is through npm: specifiers:

typescript
import { LogLayer, ConsoleTransport } from "npm:loglayer@latest";
import { getSimplePrettyTerminal } from "npm:@loglayer/transport-simple-pretty-terminal@latest";

Using Import Maps ​

For better dependency management, use an import map:

deno.json

json
{
  "imports": {
    "loglayer": "npm:loglayer@latest",
    "@loglayer/transport-simple-pretty-terminal": "npm:@loglayer/transport-simple-pretty-terminal@latest"
  }
}

main.ts

typescript
import { LogLayer, ConsoleTransport } from "loglayer";
import { getSimplePrettyTerminal } from "@loglayer/transport-simple-pretty-terminal";

Basic Setup with Console Transport ​

The Console Transport is built into LogLayer and works perfectly in Deno:

typescript
import { LogLayer, ConsoleTransport } from "npm:loglayer@latest";

const log = new LogLayer({
  transport: new ConsoleTransport({
    logger: console
  })
});

log.info("Hello from Deno with LogLayer!");

Enhanced Setup with Simple Pretty Terminal ​

For more visually appealing output, use the Simple Pretty Terminal Transport:

typescript
import { LogLayer } from "npm:loglayer@latest";
import { getSimplePrettyTerminal } from "npm:@loglayer/transport-simple-pretty-terminal@latest";

const log = new LogLayer({
  transport: getSimplePrettyTerminal({
    runtime: "node", // Use "node" for Deno
    viewMode: "inline"
  })
});

// Pretty formatted logging
log.info("This is a pretty formatted log message");
log.withMetadata({ 
  userId: 12345, 
  action: "login",
  timestamp: new Date().toISOString()
}).info("User performed action");