2.8.0 ESLint 4.7 & others

Updated main packages (eslint & flow-bin) & others that kept up with eslint 4.7 update

Changed

• package.json

2.7.1 flowtype-errors

Added

• New eslint-plugin-flowtype-errors to the flow config. It runs flow and passes the errors as linting error.

Changed

• prefer-destructuring - set rule to warn and disabled for objects (was a nuisance)
• Removed jest from frontend bundle. Need to include it separately

2.6.0 ESLint 4.3 & Jest

Updated to ESLint 4.3 and added support for Jest testing framework.

Added

• Plugin eslint-plugin-jest with rules in /rules/jest.js and part of frontend
• ESLint rule prefer-numeric-literals: Disllow parseInt() and Number.parseInt() in favor of binary, octal, and hexadecimal literals
  • Defined in errors.js
  • Current value: "prefer-numeric-literals": "error"
• ESLint rule prefer-destructuring: Prefer destructuring from arrays and objects.
  • Defined in variables.js
  • Current value:

    "prefer-destructuring": [
        "error", {
            object: true,
            array : true,
        }, {
            enforceForRenamedProperties: true,
        },
    ],

  • Sample:

    const array = [ 1,2,3,4,5 ]
    const lorem = {
        bar: "ipsum",
        foo: "dolor",
    }
    
    // const someIndex = 2
    // const foo = array[ someIndex ]
    const [ ,,foo ] = array
    
    // const bar = lorem.bar
    let { bar } = lorem;
    
    ( { bar } = {
        bar: 2,
        foo: 3,
    } );
    
    ( { foo: bar } = lorem )

2.5.1 Object Expression & Pattern

Changed

Updated rules/style.js:

• changed object-curly-newline
• added object-property-newline

Needed to satisfy:

const a = { }
const obj = {
    foo: "foo",
    bar: "bar",
    baz: "baz",
}
let {} = obj
const obj2 = {
    foo: "foo",
    bar: "bar",
    baz: "baz",
}
const { f } = obj
const { g, h } = obj
const {
    i,
    j,
} = obj
const e = {
    foo( { x, y } ) {
        dosomething()
    },
}
const h = ( opt = {} ) => ( {
    x: 2,
    y: opt,
} )

2.5.0 ESlint compat

Added eslint-plugin-compat to show browser compatibility (using caniuse) of certain functionalities, ex. fetch.

Added

• eslint-plugin-compat with rules in /rules/compat.js

Changed

• Turn off react/require-optimization. Better put these kind of rules in your project's .eslintrc

2.4.0 - React support

Added

• eslint-plugin-react with recommended rules in /rules/react.js

2.3.2 - Update ESLint 4.2

Added

• ESLint 4.2: new rule getter-return - Enforces that a return statement is present in property getters.
  • Defined in error.js
  • Current value: "getter-return": "error"

Changed

• ESLint 4.2 allows no-sync using sync methods on top level.

  • Defined in node.js
  • Current value:

  "no-sync": [
      "error", {
          allowAtRootLevel: true,
      },
  ],

• no-unexpected-multiline to protect against edge cases of not using semicolons

  • Defined in error.js:
  • Current value: "no-unexpected-multiline": "error"