Enable no-param-assign in esnext?
http://eslint.org/docs/rules/no-param-reassign with {props: true} option.
It's useful to prevent mistakes like modifying the user supplied object (which I still manage to do...).
I've not enabled the rule yet as it's useful to be able to do foo = foo || {}, but with default arguments in Node.js 6, this will no longer be needed.
I would like to enable this on esnext when Node.js 6 has been out for a while.
@jamestalmage @jfmengels @vdemedes Thoughts?
Relevant: eslint/eslint#2770
xojs / xo
❤️ JavaScript/TypeScript linter (ESLint wrapper) with great defaults
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