extends: google
globals:
  goog: false
env:
  browser: true
plugins:
  - mocha
parserOptions:
  ecmaVersion: 2017 # Enable async/await support in Node scripts
  sourceType: module
rules:
  indent: [error, 2]
  max-len: [error, 120]
  no-new: warn
  quotes: [error, single, {"avoidEscape": true}]
  no-var: error
  curly: error
  eol-last: [error, "always"]
  no-floating-decimal: error
  no-unused-vars:
    - error
    # Account for closure compiler conventions. See docs/closure-compiler.md
    # Ignores: MDC[PascalCase]Adapter (records), [PascalCase]Type (typedefs)
    - varsIgnorePattern: ^(?:(?:MDC(?:(?:[A-Z][a-z0-9]+)+)Adapter)|(?:(?:(?:[A-Z][a-z0-9]+)+)Type))$

  # TODO: Enable once https://github.com/material-components/material-components-web/milestone/4
  # is complete
  require-jsdoc: off
  valid-jsdoc: off

  prefer-const: error

  # Rules for our mocha unit tests. Note that even though we use mocha, we model our unit tests
  # after frameworks such as tape and ava, which encourage modern paradigms, seek to minimize
  # shared state across tests, and try and make tests look as simple as possible.
  mocha/handle-done-callback: error
  mocha/no-exclusive-tests: error
  mocha/no-hooks: error
  mocha/no-identical-title: error
  mocha/no-nested-tests: error
  mocha/no-pending-tests: error
  mocha/no-skipped-tests: error
  mocha/valid-suite-description: [error, ^MDC.+|^webpack]