Update dependency standard to v15

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
standard (source)	devDependencies	major	14.3.4 -> 15.0.0

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Release Notes

standard/standard

v15.0.0

Compare Source

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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Renovate configuration

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[coveralls]

Pull Request Test Coverage Report for Build 254

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 58.974%

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Totals
Change from base Build 250:	0.0%
Covered Lines:	18
Relevant Lines:	29

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💛 - Coveralls