style(build): Use modules over json for configs

.eslintrc.js

@@ -0,0 +1,14 @@
+/*eslint-env node*/
+module.exports = {
+  extends: ['sentry-app'],
+  globals: {
+    require: false,
+    expect: false,
+    sinon: false,
+    MockApiClient: true,
+    TestStubs: true,
+    tick: true,
+    jest: true,
+  },
+  rules: {},
+};

jest.config.js

@@ -19,8 +19,8 @@ module.exports = {
   },
   modulePaths: ['<rootDir>/src/sentry/static/sentry'],
   setupFiles: [
-    "<rootDir>/tests/js/throw-on-react-error.js",
-    '<rootDir>/tests/js/setup.js'
+    '<rootDir>/tests/js/throw-on-react-error.js',
+    '<rootDir>/tests/js/setup.js',
   ],
   setupTestFrameworkScriptFile: '<rootDir>/tests/js/setupFramework.js',
   testMatch: ['<rootDir>/tests/js/**/?(*.)(spec|test).js?(x)'],

prettier.config.js

@@ -0,0 +1,11 @@
+/*eslint-env node*/
+module.exports = {
+  bracketSpacing: false,
+  jsxBracketSameLine: false,
+  printWidth: 90,
+  semi: true,
+  singleQuote: true,
+  tabWidth: 2,
+  trailingComma: 'es5',
+  useTabs: false,
+};

stylelint.config.js

@@ -0,0 +1,10 @@
+/*eslint-env node*/
+module.exports = {
+  processors: ['stylelint-processor-styled-components'],
+  extends: ['stylelint-config-recommended', 'stylelint-config-styled-components'],
+  rules: {
+    'declaration-colon-newline-after': null,
+    'block-no-empty': null,
+    'selector-type-no-unknown': [true, {ignoreTypes: ['$dummyValue']}],
+  },
+};