Update dependencies, and fix or suppress lint issues

.eslintrc.js

@@ -9,9 +9,9 @@ const javascriptSettings = {
     'no-var': 'warn',
     'one-var': 'off',
     'space-before-function-paren': ['error', 'never'],
-    'semi': ['error', 'always']
-  },
-}
+    semi: ['error', 'always']
+  }
+};
 
 const typescriptSettings = {
   files: ['*.ts'],
@@ -24,7 +24,9 @@ const typescriptSettings = {
     'no-var': 'warn',
     'one-var': 'off',
     'space-before-function-paren': ['error', 'never'],
-    'semi': 'off',
+    // Using method rather than property for method-signature-style, to document method overloads separately.
+    '@typescript-eslint/method-signature-style': ['warn', 'method'],
+    semi: 'off',
     '@typescript-eslint/semi': ['error', 'always'],
     '@typescript-eslint/member-delimiter-style': [
       'error',
@@ -40,7 +42,7 @@ const typescriptSettings = {
       }
     ]
   }
-}
+};
 
 module.exports = {
   plugins: ['jest'],
@@ -51,4 +53,4 @@ module.exports = {
     javascriptSettings,
     typescriptSettings
   ]
-}
+};

package.json

@@ -31,15 +31,15 @@
   ],
   "dependencies": {},
   "devDependencies": {
-    "@types/jest": "^26.0.5",
-    "@types/node": "^14.0.23",
-    "@typescript-eslint/eslint-plugin": "^2.34.0",
-    "eslint": "^6.8.0",
-    "eslint-config-standard-with-typescript": "^16.0.0",
-    "eslint-plugin-jest": "^23.18.0",
-    "jest": "^26.1.0",
-    "standard": "^14.3.4",
-    "typescript": "^3.9.7"
+    "@types/jest": "^26.0.15",
+    "@types/node": "^14.14.2",
+    "@typescript-eslint/eslint-plugin": "^4.5.0",
+    "eslint": "^7.11.0",
+    "eslint-config-standard-with-typescript": "^19.0.1",
+    "eslint-plugin-jest": "^24.1.0",
+    "jest": "^26.6.0",
+    "standard": "^15.0.0",
+    "typescript": "^4.0.3"
   },
   "typings": "typings/index.d.ts",
   "jest": {

tests/command.addCommand.test.js

@@ -36,6 +36,7 @@ test('when commands added using .addCommand and .command then internals similar'
       case 'number':
       case 'undefined':
         // Compare values in a way that will be readable in test failure message.
+        // eslint-disable-next-line jest/no-conditional-expect
         expect(`${key}:${cmd1[key]}`).toEqual(`${key}:${cmd2[key]}`);
         break;
     }

tests/command.executableSubcommand.lookup.test.js

@@ -16,8 +16,10 @@ test('when subcommand file missing then error', () => {
   return execAsync(`node ${pm} list`).catch((err) => {
     if (process.platform === 'win32') {
       // Get uncaught thrown error on Windows
+      // eslint-disable-next-line jest/no-conditional-expect
       expect(err.stderr).toBeDefined();
     } else {
+      // eslint-disable-next-line jest/no-conditional-expect
       expect(err.stderr).toMatch(new RegExp(/Error: 'pm-list' does not exist/));
     }
   });
@@ -28,8 +30,10 @@ test('when alias subcommand file missing then error', () => {
   return execAsync(`node ${pm} lst`).catch((err) => {
     if (process.platform === 'win32') {
       // Get uncaught thrown error on Windows
+      // eslint-disable-next-line jest/no-conditional-expect
       expect(err.stderr).toBeDefined();
     } else {
+      // eslint-disable-next-line jest/no-conditional-expect
       expect(err.stderr).toMatch(new RegExp(/Error: 'pm-list' does not exist/));
     }
   });

tests/command.executableSubcommand.signals.test.js

@@ -17,8 +17,8 @@ const describeOrSkipOnWindows = (process.platform === 'win32') ? describe.skip :
 describeOrSkipOnWindows.each([['SIGINT'], ['SIGHUP'], ['SIGTERM'], ['SIGUSR1'], ['SIGUSR2']])(
   'test signal handling in executableSubcommand', (value) => {
     // Slightly tricky test, stick with callback and disable lint warning.
-    // eslint-disable-next-line jest/no-test-callback
-    test(`when command killed with ${value} then executableSubcommand receieves ${value}`, (done) => {
+    // eslint-disable-next-line jest/no-done-callback
+    test(`when command killed with ${value} then executableSubcommand receives ${value}`, (done) => {
       const pmPath = path.join(__dirname, './fixtures/pm');
 
       // The child process writes to stdout.

tests/options.custom-processing.test.js

@@ -63,7 +63,7 @@ test('when option specified then callback called with value', () => {
   expect(mockCoercion).toHaveBeenCalledWith(value, undefined);
 });
 
-test('when option specified then value is as returned from callback ', () => {
+test('when option specified then value is as returned from callback', () => {
   const callbackResult = 2;
   const program = new commander.Command();
   program

tsconfig.json

@@ -6,7 +6,7 @@
         ],
         "noImplicitAny": true,
         "noImplicitThis": true,
-        "strictNullChecks": false,
+        "strictNullChecks": true,
         "types": [
             "node"
         ],
@@ -17,4 +17,4 @@
         "typings/index.d.ts",
         "typings/commander-tests.ts"
     ]
-}
+}

typings/commander-tests.ts

@@ -33,7 +33,7 @@ const errorInstance = new commander.CommanderError(1, 'code', 'message');
 
 // Command properties
 console.log(programWithOptions.someOption);
-// eslint-disable-next-line dot-notation
+// eslint-disable-next-line @typescript-eslint/dot-notation
 console.log(programWithOptions['someOption']);
 const theArgs = program.args;
 const theCommands: commander.Command[] = program.commands;
@@ -162,7 +162,7 @@ const { operands, unknown } = program.parseOptions(['node', 'script.js', 'hello'
 // opts
 const opts = program.opts();
 const optsVal1 = opts.foo;
-// eslint-disable-next-line dot-notation
+// eslint-disable-next-line @typescript-eslint/dot-notation
 const opstVale2 = opts['bar'];
 
 // description

typings/index.d.ts

@@ -394,6 +394,6 @@ declare namespace commander {
 }
 
 // Declaring namespace AND global
-// eslint-disable-next-line no-redeclare
+// eslint-disable-next-line @typescript-eslint/no-redeclare
 declare const commander: commander.CommanderStatic;
 export = commander;