⚒ update CI and deps

Author: MichaelDeBoey

Diff for: .gitattributes

@@ -1,2 +1,2 @@
-*.ts eol=lf
+* text=auto eol=lf
 /test/fixtures/crlf.vue eol=crlf

Diff for: .github/workflows/CI.yml

@@ -12,45 +12,57 @@ jobs:
     name: Lint
     runs-on: ubuntu-latest
     steps:
-    - name: Checkout
-      uses: actions/checkout@v1
-      with:
-        fetch-depth: 1
-    - name: Checkout submodules
-      run: git submodule update --init
-    - name: Install Node.js
-      uses: actions/setup-node@v1
-      with:
-        node-version: 12
-    - name: Install Packages
-      run: npm install
-    - name: Lint
-      run: npm run -s lint
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Checkout submodules
+        run: git submodule update --init
+      - name: Install Node.js
+        uses: actions/setup-node@v1
+        with:
+          node-version: 14
+      - name: Install Packages
+        run: npm install
+      - name: Lint
+        run: npm run -s lint
 
   test:
     name: Test
-
     strategy:
       matrix:
-        eslint: [6, 5]
-        node: [13, 12, 10, 8, "8.10.0"]
-        exclude:
-        # Run ESLint 5 on only the LTS.
-        - node: 13
-          eslint: 5
-        - node: 10
-          eslint: 5
-        - node: 8
-          eslint: 5
-        - node: "8.10.0"
-          eslint: 5
+        eslint: [7]
+        node: [14]
+        os: [ubuntu-latest]
+        include:
+          # On other platforms
+          - eslint: 7
+            node: 14
+            os: windows-latest
+          - eslint: 7
+            node: 14
+            os: macos-latest
+          # On old Node.js versions
+          - eslint: 7
+            node: 12
+            os: ubuntu-latest
+          - eslint: 7
+            node: 10
+            os: ubuntu-latest
+          # On old ESLint versions
+          - eslint: 6
+            node: 14
+            os: ubuntu-latest
+          - eslint: 5
+            node: 14
+            os: ubuntu-latest
+          # On the minimum supported ESLint/Node.js version
+          - eslint: 5
+            node: 8.10.0
+            os: ubuntu-latest
 
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
     steps:
     - name: Checkout
-      uses: actions/checkout@v1
-      with:
-        fetch-depth: 1
+      uses: actions/checkout@v2
     - name: Checkout submodules
       run: git submodule update --init
     - name: Install Node.js v${{ matrix.node }}
@@ -60,17 +72,7 @@ jobs:
     - name: Install Packages
       run: npm install
     - name: Install ESLint v${{ matrix.eslint }}
-      run: |
-        if [ ${{ matrix.eslint }} -eq 6 ]; then
-          cd test/fixtures/eslint
-          npm install
-        else
-          npm install --no-save [email protected]
-          cd test/fixtures/eslint
-          git checkout v5.16.0
-          npm install [email protected]
-          npm install
-        fi
+      run: node scripts/ci-install-eslint ${{ matrix.eslint }}
     - name: Build
       run: npm run -s build
     - name: Test

Diff for: package.json

@@ -16,7 +16,7 @@
     "debug": "^4.1.1",
     "eslint-scope": "^5.0.0",
     "eslint-visitor-keys": "^1.1.0",
-    "espree": "^6.1.2",
+    "espree": "^7.0.0",
     "esquery": "^1.0.1",
     "lodash": "^4.17.15"
   },
@@ -27,13 +27,13 @@
     "@types/lodash": "^4.14.120",
     "@types/mocha": "^5.2.4",
     "@types/node": "^10.12.21",
-    "@typescript-eslint/parser": "^1.2.0",
+    "@typescript-eslint/parser": "^2.31.0",
     "babel-eslint": "^10.0.1",
     "chokidar": "^2.0.4",
     "codecov": "^3.1.0",
     "cross-spawn": "^6.0.5",
     "dts-bundle": "^0.7.3",
-    "eslint": "^6.1.0",
+    "eslint": "^7.0.0",
     "fs-extra": "^7.0.1",
     "mocha": "^6.1.4",
     "npm-run-all": "^4.1.5",

Diff for: scripts/ci-install-eslint.js

@@ -0,0 +1,47 @@
+"use strict"
+
+const { spawn } = require("child_process")
+
+function cd(path) {
+    console.log("$ cd %s", path)
+    process.chdir(path)
+}
+
+function sh(command) {
+    console.log("$ %s", command)
+    return new Promise((resolve, reject) => {
+        spawn(command, [], { shell: true, stdio: "inherit" })
+            .on("error", reject)
+            .on("exit", exitCode => {
+                if (exitCode) {
+                    reject(new Error(`Exit with non-zero ${exitCode}`))
+                } else {
+                    resolve()
+                }
+            })
+    })
+}
+
+;(async function main() {
+    const requestedVersion = process.argv[2]
+    const requestedVersionSpec = /^\d+\.\d+\.\d+$/u.test(requestedVersion)
+        ? requestedVersion
+        : `^${requestedVersion}`
+
+    // Install ESLint of the requested version
+    await sh(`npm install eslint@${requestedVersionSpec}`)
+
+    // Install ESLint submodule of the requested version
+    const installedVersion = require("eslint").CLIEngine.version
+    cd("test/fixtures/eslint")
+    if (!installedVersion.startsWith("7.")) {
+        await sh(`git checkout v${installedVersion}`)
+    }
+    if (installedVersion.startsWith("5.")) {
+        await sh("npm install [email protected]")
+    }
+    await sh("npm install")
+})().catch(error => {
+    console.error(error)
+    process.exitCode = 1
+})

Diff for: test/core-rules.js

@@ -44,6 +44,19 @@ const EXCEPTIONS = new Set([
 const originalRun = RuleTester.prototype.run
 const processed = new Set()
 
+/**
+ * Check if the code should be skipped or not.
+ * The following code should be skipped.
+ * - includes shebang
+ * - includes syntax error -- some tests in old ESLint contains syntax error.
+ *   Acorn has fixed to catch the syntax errors in a minor release, so those
+ *   tests go to fail.
+ * @param {string} code The test code.
+ */
+function codeShouldBeSkipped(code) {
+    return code.startsWith("#!") || code.includes("await async")
+}
+
 /**
  * Wrap the given code with a `<script>` tag.
  *
@@ -69,7 +82,7 @@ function wrapCode(code) {
 //eslint-disable-next-line complexity
 function modifyPattern(ruleId, pattern) {
     if (typeof pattern === "string") {
-        if (pattern.startsWith("#!")) {
+        if (codeShouldBeSkipped(pattern)) {
             return null
         }
         return {
@@ -84,7 +97,7 @@ function modifyPattern(ruleId, pattern) {
     if (
         pattern.parser != null ||
         pattern.filename != null ||
-        pattern.code.startsWith("#!")
+        codeShouldBeSkipped(pattern.code)
     ) {
         return null
     }