Documentation Index
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This recipe transforms the usage of util.log() to use console.log() to handle Node.js DEP0059.
What It Does
This codemod replaces:
util.log() calls with console.log() including timestamp formatting- Removes unnecessary
util imports when no longer needed
Before/After
Before:
const util = require("node:util");
util.log("Hello world");
console.log(new Date().toLocaleString(), "Hello world");
Multiple Log Statements
Before:
const { log } = require("node:util");
log("Application started");
log("Processing request");
console.log(new Date().toLocaleString(), "Application started");
console.log(new Date().toLocaleString(), "Processing request");
Usage
Run this codemod on your project:
npx codemod node/userland/util-log-to-console-log
util.log() automatically prefixed messages with a timestamp. The codemod preserves this behavior by adding new Date().toLocaleString() as the first argument to console.log().
If you’re using a structured logging library, you may want to review the transformed code and replace console.log() with your logger’s timestamp functionality instead.
