.eslintrc

{
    "rules": {
        "curly": [2, "multi-line"],
        "eol-last": [2],
        "indent": [2, 2, {"SwitchCase": 1}], # Blockly/Google use 2-space indents
        "linebreak-style": [2, "unix"],
        "max-len": [2, 120, 4],
        "no-trailing-spaces": [2, { "skipBlankLines": true }],
        "no-unused-vars": [2, {"args": "after-used", "varsIgnorePattern": "^_"}],
        "quotes": [0], # Blockly mixes single and double quotes
        "semi": [2, "always"],
        "space-before-function-paren": [2, "never"], # Blockly doesn't have space before function paren
        "strict": [0], # Blockly uses 'use strict' in files
        "no-cond-assign": [0], # Blockly often uses cond-assignment in loops
        "valid-jsdoc": [2, {"requireReturn": false}],
        "no-redeclare": [0], # Preference from Blockly/Google
        "no-console": ["off"] # Blockly uses console for errors to developers.
    },
    "env": {
        "browser": true
    },
    "globals": {
        "Blockly": true, # Blockly global
        "goog": true # goog closure libraries/includes
    },
    "extends": "eslint:recommended"
}