eslint-plugin-no-not-accumulator-reassign v0.1.0

eslint-plugin-no-not-accumulator-reassign

To not reassign parameters is great in many cases but there are a few parameters in the JS standard library that are made to be reassigned:

['foo', 'bar', 'qux', 'foo'].reduce((accumulator, value) => {
  accumulator[value] = true;
  return accumulator;
}, {});

The alternative would be something like this:

['foo', 'bar', 'qux', 'foo'].reduce((accumulator, value) => {
  return {...accumulator, [value]: true};
}, {});

and that is 10 to 100 times slower.

This plugin aims to forbid the reassignment of parameters except when they should be.

Installation

npm install -D eslint-plugin-no-not-accumulator-reassign

Usage

In your .eslintrc.yml:

plugins:
  - no-not-accumulator-reassign
rules:
  no-not-accumulator-reassign/no-not-accumulator-reassign:
  - error
  - - reduce
  - props: true

See the docs for more information.

License

MIT