New rules

• import/newline-after-import f81e933

Improvements

• Upgrade globby dependency (#574) 34800b7

v0.41.0...v0.42.0

Breaking

• XO can no longer be installed globally.
  • It caused too many problems. Instead, you can run the local XO binary with $ npx xo.
• XO now enforces trailing comma in multiline statements.
  • This has a lot of benefits.
  • Prettier also enforces this by default.
  • If you don't want it, you can disable the comma-dangle rule, and @typescript-eslint/comma-dangle if you use TypeScript.
• Change operator-linebreak rule to enforce operators before.
  • This way is more readable.

New rules

• arrow-body-style
• unicorn/require-array-join-separator
• unicorn/require-number-to-fixed-digits-argument
• unicorn/prefer-prototype-methods
• unicorn/no-array-method-this-argument
• unicorn/require-post-message-target-origin

v0.40.3...v0.41.0

• Support xo.config.cjs and .xo-config.cjs (#561) 374dd73

v0.40.2...v0.40.3

• Fix handling of parserOptions for TypeScript (#557) 7ace6e5

v0.40.1...v0.40.2

• Fix resolving base config (#545) d2c5750
• Fix handling of parserOptions option (#544) e9c96a1

v0.40.0...v0.40.1

Breaking

• XO now enforces that your project is ESM
  If you cannot yet move to ESM, I recommend staying on XO 0.39 for now.
• Require Node.js 12.20 cc06c3c

New rules

• unicorn/prefer-node-protocol
• unicorn/prefer-module
• unicorn/no-document-cookie
• unicorn/numeric-separators-style
• unicorn/prefer-array-flat
• unicorn/prefer-array-flat-map

Meta

• Move from deprecated ESLint.CLIEngine to ESLint (#534) 0480d80
  This should hopefully resolve a bunch of issues.

v0.39.1...v0.40.0

• Fix a problem with using XO with Prettier fa34c74

v0.39.0...v0.39.1

New rules

• unicorn/no-static-only-class
• unicorn/prefer-array-flat
• unicorn/prefer-switch
• @typescript-eslint/no-unsafe-argument

Breaking

• Remove the esnext option e80c094
• unicorn/prevent-abbreviations rule: Rename options sindresorhus/eslint-plugin-unicorn@cf42cc5
• unicorn/no-keyword-prefix rule: Rename blacklist option to disallowedPrefixes sindresorhus/eslint-plugin-unicorn@91e60d0

Improvements

• Add --print-config flag (#529) 7b8dc70
• Disable the import/default rule for TypeScript files e3c511b
• Disable the import/export rule for TypeScript files b385bee

v0.38.2...v0.39.0

• Disable the node/file-extension-in-import rule for TypeScript projects (#523) 1eb8230
  It doesn't work properly with TypeScript projects.

v0.38.1...v0.38.2

• Fix a problem in v0.38.0 8b2fa78

v0.38.0...v0.38.1