dbg

A dbg(…) function for Deno. Heavily inspired by Rusts’ dbg!(…) macro.

Examples

import { dbg } from "https://deno.land/x/dbg/mod.ts";

const a = 2;
const b = dbg(a * 2) + 1;
//        ^-- [examples/main.ts:4:11] 4 (number)
console.assert(b === 5);

factorial implementation(examples/factorial.ts):

import { dbg } from "https://deno.land/x/dbg/mod.ts";

function factorial(n: number): number {
  if (dbg(n <= 1)) {
    return dbg(n);
  }

  return dbg(n * factorial(n - 1));
}

function main() {
  dbg(factorial(5));
}

if (import.meta.main) {
  main();
}

This prints:

Advanced Features

Not just console.debug, but more:

• colorful output(can disable by NO_COLOR ENVIRONMENT)
• print file name, function name, line and column
• auto detect --allow-read permission(see Read Permission)

Read Permission

Run with --allow-read flag:

$ deno run --allow-read ./examples/main.ts
[examples/main.ts:4:11] 4 (number)

Run without --allow-read flag:

$ deno run ./examples/main.ts
No read access to <CWD>, use full path. Or run again with --allow-read. See https://github.com/justjavac/deno_dbg#read-permission
[/Users/justjavac/tmp/dbg/examples/main.ts:4:11] 4 (number)

License

deno_dbg is released under the MIT License. See the bundled LICENSE file for details.