“Rolldown is a JavaScript bundler written in Rust intended to serve as the future bundler used in Vite. It provides Rollup-compatible APIs and plugin interface, but will be more similar to esbuild in scope.”

“Work in Progress: Rolldown is currently in active development and not usable for production yet. but we are open sourcing it now so we can start collaborating with community contributors.”

Vite is currently using two bundlers: esbuild for development and Rollup for production. They are moving to a single bundler so that the output for development and production is consistent and to avoid duplicating bundler work.

• Text styling:

  console.log(
    util.styleText('bold', util.styleText('red', 'Bold and red!')),
  ); 
  

• Loading and parsing environment variables:
  • process.loadEnvFile(path)
  • util.parseEnv(content)
• Support for multi-line values in .env files
• Single executable applications: support for embedding assets

• Partial support for Astro, Svelte and Vue files
• New configuration features: biome.jsonc, extends resolves dependencies
• New formatting options: attributePosition, json.formatter.trailingCommas
• biome migrate prettier: “This command will read your Prettier .prettierrc/prettier.json and .prettierignore, and attempt to port its options and globs in Biome.”
• New linter rules

“The Cybersecurity and Infrastructure Security Agency (CISA), the U.S.’ lead cyber defense agency, is collaborating with the open source ecosystem on new initiatives to secure the critical infrastructure that powers modern digital life.”

CISA recommends best practices such as multi-factor authentication, a way to report vulnerabilities, etc.

“Five of the most widely used package registries have agreed to take steps towards securing their operations, guided by this new ‘Principles for Package Repository Security’ framework.”

• The Rust Foundation
• The Python Software Foundation
• Packagist and Composer
• npm
• Maven Central (maintained by Sonatype)

• Promise.withResolvers()
• Array grouping: Object.groupBy() and Map.groupBy()

const { promise, resolve, reject } = Promise.withResolvers();

assert.deepEqual(
  Object.groupBy(['a', 1, 'b', true, 8], x => typeof x),
  {
    string: [ 'a', 'b' ],
    number: [ 1, 8 ],
    boolean: [ true ],
  }
);
assert.deepEqual(
  Map.groupBy(['a', 1, 'b', true, 8], x => typeof x),
  new Map([
    [ 'string', [ 'a', 'b' ] ],
    [ 'number', [ 1, 8 ] ],
    [ 'boolean', [ true ] ]
  ])
);