Created by: xinpingwang

There are two code style config files under frontend: .eslintrc.js and .fecsrc, but these config are not consistent. And the lint script in package.json using the fecs, so at least the following configuration needs to be added to the .eslintrc.js file:

'arrow-parens': ['error', 'as-needed'],
'brace-style': ['warn', 'stroustrup'],
'comma-dangle': ['error', 'never'],
'no-console': 'warn',
'operator-linebreak': ['error', 'before'],
'quote-props': ['warn', 'as-needed'],
'space-before-function-paren': ['error', {
    'anonymous': 'always',
    'named': 'never',
    'asyncArrow': 'never'
}],
'space-infix-ops': 'error',
'space-unary-ops': ['warn', {'words': true, 'nonwords': false}],
'vue/no-unused-vars': 'warn',
'vue/prop-name-casing': ['error'],
'vue/script-indent': ['error', 4]