🐛 fix for ESLint 6 (#169)

Author: mysticatea

azure-pipelines.yml

@@ -1,8 +1,3 @@
-# Node.js
-# Build a general Node.js project with npm.
-# Add steps that analyze code, save build artifacts, deploy, and more:
-# https://docs.microsoft.com/azure/devops/pipelines/languages/javascript
-
 trigger:
   - master
 
@@ -45,6 +40,23 @@ jobs:
       - script: npm run -s codecov
         displayName: Send Coverage
 
+  - job: tests_on_linux_with_eslint6
+    displayName: Test ESLint 6 on Linux
+    pool:
+      vmImage: 'Ubuntu-16.04'
+    steps:
+      - task: NodeTool@0
+        displayName: Install Node.js
+        inputs:
+          versionSpec: 12.x
+      # It needs twice due to npm's bug: https://npm.community/t/error-node-modules-staging-eslint-e7cf6846-node-modules-eslint
+      - script: npm install && npm install --no-save async eslint@^6.0.0-rc.0 && npm install --no-save async eslint@^6.0.0-rc.0
+        displayName: Install Packages
+      - script: npm test
+        displayName: Test
+      - script: npm run -s codecov
+        displayName: Send Coverage
+
   - job: tests_on_windows
     displayName: Test on Windows
     pool:

lib/rules/process-exit-as-throw.js

@@ -5,28 +5,35 @@
 "use strict"
 
 const CodePathAnalyzer = safeRequire(
+    "eslint/lib/linter/code-path-analysis/code-path-analyzer",
     "eslint/lib/code-path-analysis/code-path-analyzer"
 )
-const CodePath = safeRequire("eslint/lib/code-path-analysis/code-path")
 const CodePathSegment = safeRequire(
+    "eslint/lib/linter/code-path-analysis/code-path-segment",
     "eslint/lib/code-path-analysis/code-path-segment"
 )
+const CodePath = safeRequire(
+    "eslint/lib/linter/code-path-analysis/code-path",
+    "eslint/lib/code-path-analysis/code-path"
+)
 
 const originalLeaveNode =
     CodePathAnalyzer && CodePathAnalyzer.prototype.leaveNode
 
 /**
  * Imports a specific module.
- *
- * @param {string} moduleName - A module name to import.
+ * @param {...string} moduleNames - module names to import.
  * @returns {object|null} The imported object, or null.
  */
-function safeRequire(moduleName) {
-    try {
-        return require(moduleName)
-    } catch (_err) {
-        return null
+function safeRequire(...moduleNames) {
+    for (const moduleName of moduleNames) {
+        try {
+            return require(moduleName)
+        } catch (_err) {
+            // Ignore.
+        }
     }
+    return null
 }
 
 /* istanbul ignore next */

package.json

@@ -26,6 +26,7 @@
     "eslint": "^5.16.0",
     "eslint-plugin-node": "file:.",
     "fast-glob": "^2.2.6",
+    "globals": "^11.12.0",
     "mocha": "^6.1.4",
     "nyc": "^14.0.0",
     "opener": "^1.5.1",

tests/lib/rules/no-deprecated-api.js

@@ -4,7 +4,7 @@
  */
 "use strict"
 
-const RuleTester = require("eslint/lib/testers/rule-tester")
+const { RuleTester } = require("eslint")
 const rule = require("../../../lib/rules/no-deprecated-api")
 
 const ruleTester = new RuleTester()
@@ -63,6 +63,7 @@ ruleTester.run("no-deprecated-api", rule, {
         {
             code: "import domain from 'domain/';",
             parserOptions: { sourceType: "module" },
+            env: { es6: true },
         },
 
         // https://github.com/mysticatea/eslint-plugin-node/issues/55
@@ -948,12 +949,6 @@ ruleTester.run("no-deprecated-api", rule, {
                 "'process.env.NODE_REPL_HISTORY_FILE' was deprecated since v4.0.0. Use 'NODE_REPL_HISTORY' instead.",
             ],
         },
-        {
-            code: "import domain from 'domain';",
-            options: [{ version: "4.0.0" }],
-            parserOptions: { sourceType: "module" },
-            errors: ["'domain' module was deprecated since v4.0.0."],
-        },
 
         {
             code: "new Buffer()",

tests/lib/rules/no-extraneous-import.js

@@ -5,7 +5,7 @@
 "use strict"
 
 const path = require("path")
-const RuleTester = require("eslint").RuleTester
+const { RuleTester } = require("eslint")
 const rule = require("../../../lib/rules/no-extraneous-import")
 
 /**
@@ -17,9 +17,13 @@ function fixture(name) {
     return path.resolve(__dirname, "../../fixtures/no-extraneous", name)
 }
 
-const tester = new RuleTester({ parserOptions: { sourceType: "module" } })
-
-tester.run("no-extraneous-import", rule, {
+const ruleTester = new RuleTester({
+    parserOptions: {
+        ecmaVersion: 2015,
+        sourceType: "module",
+    },
+})
+ruleTester.run("no-extraneous-import", rule, {
     valid: [
         {
             filename: fixture("dependencies/a.js"),

tests/lib/rules/no-missing-import.js

@@ -5,7 +5,7 @@
 "use strict"
 
 const path = require("path")
-const RuleTester = require("eslint").RuleTester
+const { RuleTester } = require("eslint")
 const rule = require("../../../lib/rules/no-missing-import")
 
 /**
@@ -17,7 +17,12 @@ function fixture(name) {
     return path.resolve(__dirname, "../../fixtures/no-missing", name)
 }
 
-const ruleTester = new RuleTester({ parserOptions: { sourceType: "module" } })
+const ruleTester = new RuleTester({
+    parserOptions: {
+        ecmaVersion: 2015,
+        sourceType: "module",
+    },
+})
 ruleTester.run("no-missing-import", rule, {
     valid: [
         {

tests/lib/rules/no-unpublished-import.js

@@ -5,7 +5,7 @@
 "use strict"
 
 const path = require("path")
-const RuleTester = require("eslint").RuleTester
+const { RuleTester } = require("eslint")
 const rule = require("../../../lib/rules/no-unpublished-import")
 
 /**
@@ -17,7 +17,12 @@ function fixture(name) {
     return path.resolve(__dirname, "../../fixtures/no-unpublished", name)
 }
 
-const ruleTester = new RuleTester({ parserOptions: { sourceType: "module" } })
+const ruleTester = new RuleTester({
+    parserOptions: {
+        ecmaVersion: 2015,
+        sourceType: "module",
+    },
+})
 ruleTester.run("no-unpublished-import", rule, {
     valid: [
         {

tests/lib/rules/no-unsupported-features/es-builtins.js

@@ -4,8 +4,8 @@
  */
 "use strict"
 
-const RuleTester = require("eslint").RuleTester
-const { configs } = require("@mysticatea/eslint-plugin")
+const { RuleTester } = require("eslint")
+const globals = require("globals")
 const rule = require("../../../../lib/rules/no-unsupported-features/es-builtins")
 
 /**
@@ -56,7 +56,7 @@ function concat(patterns) {
 
 const ruleTester = new RuleTester({
     parserOptions: { ecmaVersion: 2018 },
-    globals: Object.assign({}, configs.es2015.globals, configs.es2017.globals),
+    globals: globals.es2017,
 })
 ruleTester.run(
     "no-unsupported-features/es-builtins",

tests/lib/rules/no-unsupported-features/es-syntax.js

@@ -5,8 +5,8 @@
 "use strict"
 
 const path = require("path")
-const RuleTester = require("eslint").RuleTester
-const { configs } = require("@mysticatea/eslint-plugin")
+const { RuleTester } = require("eslint")
+const globals = require("globals")
 const rule = require("../../../../lib/rules/no-unsupported-features/es-syntax")
 
 /**
@@ -72,7 +72,7 @@ function concat(patterns) {
 
 const ruleTester = new RuleTester({
     parserOptions: { ecmaVersion: 2019 },
-    globals: Object.assign({}, configs.es2015.globals, configs.es2017.globals),
+    globals: globals.es2017,
 })
 ruleTester.run(
     "no-unsupported-features/es-syntax",