LogLayer

Sprintf Plugin ​

NPM Version

Plugin Source

The sprintf plugin provides printf-style string formatting support using sprintf-js. It allows you to format your log messages using familiar printf-style placeholders if a logging library does not support this behavior.

WARNING

LogLayer does not allow passing items that are not strings, booleans, or numbers into message methods like info, error, etc. It is recommended to only use string / boolean / number specifiers in your format strings.

Installation ​

bash
npm install @loglayer/plugin-sprintf
bash
yarn add @loglayer/plugin-sprintf
bash
pnpm add @loglayer/plugin-sprintf

Usage ​

typescript
import { LogLayer, ConsoleTransport } from 'loglayer'
import { sprintfPlugin } from '@loglayer/plugin-sprintf'

const log = new LogLayer({
  transport: new ConsoleTransport({
    logger: console
  }),
  plugins: [
    sprintfPlugin()
  ]
})

// Example usage
log.info("Hello %s!", "world")
// Output: Hello world!

log.info("Number: %d", 42)
// Output: Number: 42

Changelog ​

View the changelog here.