chore: precompile with babel (#257)

.eslintignore

@@ -1 +1,2 @@
 coverage/
+lib/

.eslintrc.js

@@ -1,6 +1,6 @@
 'use strict';
 
-const { globals } = require('./index').environments.globals;
+const { globals } = require('./').environments.globals;
 
 module.exports = {
  extends: [
@@ -32,6 +32,8 @@ module.exports = {
  },
  ],
  'prettier/prettier': 'error',
+ 'node/no-unsupported-features/es-syntax': 'off',
+ 'node/no-unsupported-features/es-builtins': 'error',
  },
  overrides: [
  {

.gitignore

@@ -1,2 +1,3 @@
 node_modules/
 coverage/
+lib/

babel.config.js

@@ -0,0 +1,5 @@
+'use strict';
+
+module.exports = {
+ presets: [['@babel/preset-env', { targets: { node: 6 } }]],
+};

package.json

@@ -16,24 +16,31 @@
  },
  "files": [
  "docs/",
- "rules/",
- "processors/",
- "index.js"
+ "src/",
+ "lib/"
  ],
+ "main": "lib/",
  "engines": {
  "node": ">=6"
  },
  "peerDependencies": {
  "eslint": ">=5"
  },
  "scripts": {
+ "postinstall": "yarn build",
  "lint": "eslint . --ignore-pattern '!.eslintrc.js'",
  "prettylint": "prettylint docs/**/*.md README.md package.json",
- "test": "jest"
+ "prepublishOnly": "yarn build",
+ "test": "jest",
+ "build": "babel src --out-dir lib"
  },
  "devDependencies": {
+ "@babel/cli": "^7.4.4",
+ "@babel/core": "^7.4.4",
+ "@babel/preset-env": "^7.4.4",
  "@commitlint/cli": "^7.0.0",
  "@commitlint/config-conventional": "^7.0.1",
+ "babel-jest": "^24.8.0",
  "eslint": "^5.1.0",
  "eslint-config-prettier": "^4.1.0",
  "eslint-plugin-eslint-plugin": "^2.0.0",
@@ -49,7 +56,7 @@
  "prettier": {
  "proseWrap": "always",
  "singleQuote": true,
- "trailingComma": "es5"
+ "trailingComma": "all"
  },
  "lint-staged": {
  "*.js": [
@@ -73,13 +80,19 @@
  "projects": [
  {
  "displayName": "test",
- "testEnvironment": "node"
+ "testEnvironment": "node",
+ "testPathIgnorePatterns": [
+ "<rootDir>/lib/.*"
+ ]
  },
  {
  "displayName": "lint",
  "runner": "jest-runner-eslint",
  "testMatch": [
  "<rootDir>/**/*.js"
+ ],
+ "testPathIgnorePatterns": [
+ "<rootDir>/lib/.*"
  ]
  }
  ]

__tests__/rules.test.js → src/__tests__/rules.test.js

@@ -2,19 +2,19 @@
 
 const fs = require('fs');
 const path = require('path');
-const { rules } = require('../index');
+const { rules } = require('../');
 
 const ruleNames = Object.keys(rules);
 const numberOfRules = 31;
 
 describe('rules', () => {
  it('should have a corresponding doc for each rule', () => {
  ruleNames.forEach(rule => {
- const docPath = path.resolve(__dirname, '../docs/rules', `${rule}.md`);
+ const docPath = path.resolve(__dirname, '../../docs/rules', `${rule}.md`);
 
  if (!fs.existsSync(docPath)) {
  throw new Error(
- `Could not find documentation file for rule "${rule}" in path "${docPath}"`
+ `Could not find documentation file for rule "${rule}" in path "${docPath}"`,
  );
  }
  });
@@ -24,7 +24,7 @@ describe('rules', () => {
  const { length } = ruleNames;
  if (length !== numberOfRules) {
  throw new Error(
- `There should be exactly ${numberOfRules} rules, but there are ${length}. If you've added a new rule, please update this number.`
+ `There should be exactly ${numberOfRules} rules, but there are ${length}. If you've added a new rule, please update this number.`,
  );
  }
  });

index.js → src/index.js

@@ -9,7 +9,7 @@ const rules = fs
  .map(rule => path.basename(rule, '.js'))
  .reduce(
  (acc, curr) => Object.assign(acc, { [curr]: require(`./rules/${curr}`) }),
- {}
+ {},
  );
 
 const snapshotProcessor = require('./processors/snapshot-processor');

processors/snapshot-processor.js → src/processors/snapshot-processor.js

@@ -6,7 +6,7 @@ const preprocess = source => [source];
 const postprocess = messages =>
  messages[0].filter(
  // snapshot files should only be linted with snapshot specific rules
- message => message.ruleId === 'jest/no-large-snapshots'
+ message => message.ruleId === 'jest/no-large-snapshots',
  );
 
 module.exports = {

rules/__tests__/consistent-test-it.test.js → src/rules/__tests__/consistent-test-it.test.js

@@ -285,7 +285,7 @@ ruleTester.run(
  output: 'test("foo")',
  },
  ],
- }
+ },
 );
 
 ruleTester.run('consistent-test-it with fn=it and withinDescribe=it ', rule, {

rules/__tests__/no-identical-title.test.js → src/rules/__tests__/no-identical-title.test.js

@@ -23,10 +23,10 @@ ruleTester.run('no-identical-title', rule, {
  ['it("it1", function() {});', 'it("it2", function() {});'].join('\n'),
  ['it.only("it1", function() {});', 'it("it2", function() {});'].join('\n'),
  ['it.only("it1", function() {});', 'it.only("it2", function() {});'].join(
- '\n'
+ '\n',
  ),
  ['describe("title", function() {});', 'it("title", function() {});'].join(
- '\n'
+ '\n',
  ),
  [
  'describe("describe1", function() {',
@@ -136,7 +136,7 @@ ruleTester.run('no-identical-title', rule, {
  },
  {
  code: ['it("it1", function() {});', 'it("it1", function() {});'].join(
- '\n'
+ '\n',
  ),
  errors: [
  {
@@ -163,7 +163,7 @@ ruleTester.run('no-identical-title', rule, {
  },
  {
  code: ['fit("it1", function() {});', 'it("it1", function() {});'].join(
- '\n'
+ '\n',
  ),
  errors: [
  {

rules/__tests__/no-large-snapshots.test.js → src/rules/__tests__/no-large-snapshots.test.js

@@ -15,21 +15,21 @@ ruleTester.run('no-large-snapshots', rule, {
  {
  filename: 'mock.js',
  code: `expect(something).toMatchInlineSnapshot(\`\n${'line\n'.repeat(
- 2
+ 2,
  )}\`);`,
  },
  {
  filename: 'mock.js',
  code: `expect(something).toThrowErrorMatchingInlineSnapshot(\`\n${'line\n'.repeat(
- 2
+ 2,
  )}\`);`,
  },
  ],
  invalid: [
  {
  filename: 'mock.js',
  code: `expect(something).toMatchInlineSnapshot(\`\n${'line\n'.repeat(
- 50
+ 50,
  )}\`);`,
  errors: [
  {
@@ -41,7 +41,7 @@ ruleTester.run('no-large-snapshots', rule, {
  {
  filename: 'mock.js',
  code: `expect(something).toThrowErrorMatchingInlineSnapshot(\`\n${'line\n'.repeat(
- 50
+ 50,
  )}\`);`,
  errors: [
  {

rules/consistent-test-it.js → src/rules/consistent-test-it.js

@@ -69,7 +69,7 @@ module.exports = {
  nodeName.indexOf(testKeywordWithinDescribe) === -1
  ) {
  const oppositeTestKeyword = getOppositeTestKeyword(
- testKeywordWithinDescribe
+ testKeywordWithinDescribe,
  );
 
  context.report({
@@ -85,7 +85,7 @@ module.exports = {
 
  const fixedNodeName = getPreferredNodeName(
  nodeName,
- testKeywordWithinDescribe
+ testKeywordWithinDescribe,
  );
  return [fixer.replaceText(nodeToReplace, fixedNodeName)];
  },

rules/expect-expect.js → src/rules/expect-expect.js

@@ -30,7 +30,7 @@ module.exports = {
  const assertFunctionNames = new Set(
  context.options[0] && context.options[0].assertFunctionNames
  ? context.options[0].assertFunctionNames
- : ['expect']
+ : ['expect'],
  );
 
  return {
@@ -54,7 +54,7 @@ module.exports = {
  context.report({
  message: 'Test has no assertions',
  node,
- })
+ }),
  );
  },
  };

rules/no-alias-methods.js → src/rules/no-alias-methods.js

@@ -47,7 +47,7 @@ module.exports = {
 
  // Check if the method used matches any of ours
  const methodItem = methodNames.find(
- item => item[1] === targetNode.name
+ item => item[1] === targetNode.name,
  );
 
  if (methodItem) {

rules/no-identical-title.js → src/rules/no-identical-title.js

@@ -75,7 +75,7 @@ module.exports = {
  context,
  currentLayer.describeTitles,
  node,
- title
+ title,
  );
  },
  'CallExpression:exit'(node) {

rules/no-jasmine-globals.js → src/rules/no-jasmine-globals.js

@@ -127,7 +127,7 @@ module.exports = {
  return [
  fixer.replaceText(
  node.parent,
- `jest.setTimeout(${node.parent.right.value})`
+ `jest.setTimeout(${node.parent.right.value})`,
  ),
  ];
  },

rules/prefer-inline-snapshots.js → src/rules/prefer-inline-snapshots.js

@@ -19,7 +19,7 @@ module.exports = {
  return [
  fixer.replaceText(
  node.callee.property,
- 'toMatchInlineSnapshot'
+ 'toMatchInlineSnapshot',
  ),
  ];
  },
@@ -32,7 +32,7 @@ module.exports = {
  return [
  fixer.replaceText(
  node.callee.property,
- 'toThrowErrorMatchingInlineSnapshot'
+ 'toThrowErrorMatchingInlineSnapshot',
  ),
  ];
  },

rules/prefer-spy-on.js → src/rules/prefer-spy-on.js

@@ -54,11 +54,11 @@ module.exports = {
  fixer.insertTextBefore(node.left, `jest.spyOn(`),
  fixer.replaceTextRange(
  [node.left.object.range[1], node.left.property.range[0]],
- `, ${leftPropQuote}`
+ `, ${leftPropQuote}`,
  ),
  fixer.replaceTextRange(
  [node.left.property.range[1], jestFnCall.range[1]],
- `${leftPropQuote})${mockImplementation}`
+ `${leftPropQuote})${mockImplementation}`,
  ),
  ];
  },

rules/prefer-to-contain.js → src/rules/prefer-to-contain.js

@@ -39,7 +39,7 @@ const getNegationFixes = (node, sourceCode, fixer) => {
  const negationPropertyDot = sourceCode.getFirstTokenBetween(
  node.parent.object,
  node.parent.property,
- token => token.value === '.'
+ token => token.value === '.',
  );
  const toContainFunc =
  isEqualityNegation(node) && argument(node.parent).value
@@ -63,7 +63,7 @@ const getCommonFixes = (node, sourceCode, fixer) => {
  const propertyDot = sourceCode.getFirstTokenBetween(
  includesCaller.object,
  includesCaller.property,
- token => token.value === '.'
+ token => token.value === '.',
  );
 
  const closingParenthesis = sourceCode.getTokenAfter(containArg);
@@ -114,8 +114,8 @@ module.exports = {
  fixArr.push(
  fixer.replaceText(
  argument(node),
- sourceCode.getText(containArg)
- )
+ sourceCode.getText(containArg),
+ ),
  );
  return fixArr;
  },

rules/prefer-to-have-length.js → src/rules/prefer-to-have-length.js

@@ -35,7 +35,7 @@ module.exports = {
  .getFirstTokenBetween(
  node.arguments[0].object,
  node.arguments[0].property,
- token => token.value === '.'
+ token => token.value === '.',
  );
  context.report({
  fix(fixer) {

rules/util.js → src/rules/util.js

@@ -1,7 +1,7 @@
 'use strict';
 
 const path = require('path');
-const { version } = require('../package.json');
+const { version } = require('../../package.json');
 
 const REPO_URL = 'https://github.com/jest-community/eslint-plugin-jest';
 

rules/valid-expect-in-promise.js → src/rules/valid-expect-in-promise.js

@@ -98,7 +98,7 @@ const verifyExpectWithReturn = (
  promiseCallbacks,
  node,
  context,
- testFunctionBody
+ testFunctionBody,
 ) => {
  promiseCallbacks.some(promiseCallback => {
  if (promiseCallback && isFunction(promiseCallback)) {
@@ -156,7 +156,7 @@ module.exports = {
  [fulfillmentCallback, rejectionCallback],
  node,
  context,
- testFunctionBody
+ testFunctionBody,
  );
  }
  }