Standard v15.0.0

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Standard v15.0.0 Release Notes

• We're super excited to announce standard 15!

  🚀 As with every new major release, there are lots of new rules in 15.0.0 designed 🚀 to help catch bugs and make programmer intent more explicit. This release brings 👌 support for ES 2021, the latest version of the ECMAScript specification, as well 👕 as many quality-of-life improvements, including ESLint v7.

  ⬆️ When you upgrade, consider running standard --fix to automatically format your code to match the newly added rules.

  🚀 ❤️ If you enjoy StandardJS and want to support future releases, check out Feross's GitHub Sponsors page.

  🆕 New features

  • 👌 Support ES 2021, the latest version of the ECMAScript specification, which includes support for logical assignment operators and numeric separators #1551
  • 🌐 Support ES 2020 features such as optional chaining, the nullish coalescing operator, export * as ns from 'source', and import.meta.
  • 👌 Support global variables from ES 2017 (Atomics, SharedArrayBuffer), ES 2020 (BigInt, BigInt64Array, BigUint64Array, globalThis), and ES 2021 (FinalizationRegistry, WeakRef). #1436 #1557 eslint-config-standard/#156
  • 📚 The documentation is now available in Indonesian 🇮🇩! #1544
    • Thanks to @yoga1234 for the excellent work!
    • Other community contributed translations exist in Spanish, French, Italian, Japanese, Korean, Portuguese, Simplified Chinese, and Taiwanese Mandarin.
    • More translations are always welcome!

  🔄 Changed features

  • 💥 BREAKING: Node.js 8 is no longer supported
    • Node.js 8 is EOL and will no longer be receiving security updates.
    • To prevent breaking CI for projects which still support Node 8, standard silently passes when run by an unsupported version of Node
  • ⚡️ Update eslint from ~6.8.0 to ~7.11.0

  🆕 New rules

  ✅ (Estimated % of affected standard users, based on test suite in parens)

  • 👕 Require indentation for values of ternary expressions (indent) #927 [4%]
  • 👕 Enforce newlines between operands of ternary expressions if the expression spans multiple lines (multiline-ternary) #1558 [3%]
  • 👕 Disallow loops with a body that allows only one iteration (no-unreachable-loop) #1556 [0%]
  • 👕 Disallow useless backreferences in regular expressions (no-useless-backreference) #1554 [0%]
  • 👕 Enforce default clauses in switch statements to be last (default-case-last) #1553 [0%]
  • 👕 Disallow Number Literals That Lose Precision (no-loss-of-precision) #1552 [0%]

  🔄 Changed rules

  • 😌 Relax rule: Allow function declarations in nested blocks #1406
  • 👕 Relax rule: Removed redundant no-negated-in-lhs rule, already enforced by no-unsafe-negation eslint-config-standard/#160

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