PrettierとLinterを併用する ref: https://qiita.com/sigwyg/items/ebb21ef70550cee7a163

dein.toml

[[plugins]]
repo = 'sbdchd/neoformat.git'
hook_add = '''
    "let g:neoformat_verbose = 1 " only affects the verbosity of Neoformat

    " Enable tab to spaces conversion
    let g:neoformat_basic_format_retab = 1

    " Enable trimmming of trailing whitespace
    let g:neoformat_basic_format_trim = 1

    " js
    let g:neoformat_javascript_prettiereslint = {
        \ 'exe': './node_modules/.bin/prettier-eslint',
        \ 'args': ['--stdin'],
        \ 'stdin': 1,
        \ }
    let g:neoformat_enabled_javascript = ['prettiereslint']

    " css
    let g:neoformat_css_stylelint = {
        \ 'exe': './node_modules/.bin/stylelint',
        \ 'args': ['--stdin', '--fix'],
        \ 'stdin': 1,
        \ }
    let g:neoformat_enabled_css = ['stylelint']

    augroup fmt
        autocmd!
        autocmd BufWritePre *.js Neoformat
        autocmd BufWritePre *.css Neoformat
        autocmd BufWritePre *.scss Neoformat
    augroup END

file0.txt

$ yarn add -D prettier
$ yarn add -D eslint eslint-plugin-prettier eslint-config-prettier
$ yarn add -D eslint-config-standard eslint-plugin-standard eslint-plugin-promise eslint-plugin-import eslint-plugin-node
$ yarn add -D stylelint stylelint-order stylelint-config-standard

file1.txt

$ eslint --fix src/**/*.js
$ stylelint  --fix src/**/*.css

file2.txt

$ yarn add -D lint-staged husky

file4.txt

$ yarn add -D stylelint prettier-stylelint
$ yarn add -D stylelint-config-standard stylelint-config-idiomatic-order
$ yarn add -D stylefmt
$ prettier-stylelint --write src/test.css

file5.txt

`{ "parser": "postcss" }` is deprecated. Prettier now treats it as `{ "parser": "css" }`.

package.json

  ...
  "scripts": {
    "precommit": "lint-staged"
  },
  "lint-staged": {
    "src/**/*.{js,json}": [
        "eslint --fix", "git add"
    ],
    "src/**/*.{css,scss}": [
        "stylelint --fix", "git add"
    ]
  },
  ...