[eslint] add eslint

.eslintrc

@@ -0,0 +1,50 @@
+{
+  "root": true,
+
+  "extends": "@ljharb",
+
+  "rules": {
+    "array-bracket-newline": 0,
+    "array-bracket-spacing": 1,
+    "array-callback-return": 1,
+    "brace-style": 1,
+    "comma-spacing": 1,
+    "complexity": 0,
+    "consistent-return": 1,
+    "curly": 1,
+    "eqeqeq": 1,
+    "func-style": 1,
+    "indent": [1, 4],
+    "max-depth": 0,
+    "max-lines-per-function": 1,
+    "max-statements": 0,
+    "multiline-comment-style": 0,
+    "no-else-return": 1,
+    "no-lonely-if": 1,
+    "no-negated-condition": 1,
+    "no-param-reassign": 1,
+    "no-shadow": 1,
+    "no-template-curly-in-string": 0,
+    "no-trailing-spaces": 1,
+    "no-use-before-define": 1,
+    "no-useless-escape": 1,
+    "nonblock-statement-body-position": 1,
+    "object-curly-spacing": 1,
+    "prefer-regex-literals": 1,
+    "quotes": 1,
+    "space-before-blocks": 1,
+    "space-before-function-paren": 1,
+    "space-infix-ops": 1,
+    "spaced-comment": 1,
+    "wrap-regex": 1,
+  },
+
+  "overrides": [
+    {
+      "files": "example/**",
+      "rules": {
+        "no-console": 0,
+      },
+    },
+  ],
+}

example/env.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var parse = require('../').parse;
 var xs = parse('beep --boop="$PWD"', { PWD: '/home/robot' });
 console.dir(xs);

example/op.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var parse = require('../').parse;
 var xs = parse('beep || boop > /byte');
 console.dir(xs);

example/parse.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var parse = require('../').parse;
 var xs = parse('a "b c" \\$def \'it\\\'s great\'');
 console.dir(xs);

example/quote.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var quote = require('../').quote;
 var s = quote([ 'a', 'b c d', '$f', '"g"' ]);
 console.log(s);

index.js

@@ -1,3 +1,5 @@
+'use strict';
+
 exports.quote = function (xs) {
     return xs.map(function (s) {
         if (s && typeof s === 'object') {

package.json

@@ -9,7 +9,9 @@
   },
   "bugs": "https://github.com/substack/node-shell-quote/issues",
   "devDependencies": {
+    "@ljharb/eslint-config": "^21.0.0",
     "aud": "^2.0.1",
+    "eslint": "=8.8.0",
     "tape": "^5.6.1"
   },
   "homepage": "https://github.com/substack/node-shell-quote",
@@ -26,6 +28,8 @@
     "url": "http://github.com/substack/node-shell-quote.git"
   },
   "scripts": {
+    "lint": "eslint --ext=js,mjs .",
+    "pretest": "npm run lint",
     "tests-only": "tape 'test/**/*.js'",
     "test": "npm run tests-only",
     "posttest": "aud --production"

test/comment.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var test = require('tape');
 var parse = require('../').parse;
 

test/env.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var test = require('tape');
 var parse = require('../').parse;
 
@@ -17,22 +19,22 @@ test('expand environment variables', function (t) {
     t.same(parse("ab${x}def", { x: 'c' }), [ 'abcdef' ]);
     t.same(parse("ab\\${x}def", { x: 'c' }), [ 'ab${x}def' ]);
     t.same(parse('"ab\\${x}def"', { x: 'c' }), [ 'ab${x}def' ]);
-    
+
     t.end();
 });
 
 test('environment variables with metacharacters', function (t) {
     t.same(parse('a $XYZ c', { XYZ: '"b"' }), [ 'a', '"b"', 'c' ]);
     t.same(parse('a $XYZ c', { XYZ: '$X', X: 5 }), [ 'a', '$X', 'c' ]);
     t.same(parse('a"$XYZ"c', { XYZ: "'xyz'" }), [ "a'xyz'c" ]);
-    
+
     t.end();
 });
 
 test('special shell parameters', function (t) {
     var chars = '*@#?-$!0_'.split('');
     t.plan(chars.length);
-    
+
     chars.forEach(function (c) {
         var env = {};
         env[c] = 'xxx';

test/env_fn.js

@@ -1,19 +1,21 @@
+'use strict';
+
 var test = require('tape');
 var parse = require('../').parse;
 
 test('functional env expansion', function (t) {
     t.plan(4);
-    
+
     t.same(parse('a $XYZ c', getEnv), [ 'a', 'xxx', 'c' ]);
     t.same(parse('a $XYZ c', getEnvObj), [ 'a', { op: '@@' }, 'c' ]);
     t.same(parse('a${XYZ}c', getEnvObj), [ 'a', { op: '@@' }, 'c' ]);
     t.same(parse('"a $XYZ c"', getEnvObj), [ 'a ', { op: '@@' }, ' c' ]);
-    
-    function getEnv (key) {
+
+    function getEnv() {
         return 'xxx';
     }
-    
-    function getEnvObj (key) {
+
+    function getEnvObj() {
         return { op: '@@' };
     }
 });

test/op.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var test = require('tape');
 var parse = require('../').parse;
 
@@ -6,21 +8,21 @@ test('single operators', function (t) {
     t.same(parse('beep|boop'), [ 'beep', { op: '|' }, 'boop' ]);
     t.same(parse('beep \\| boop'), [ 'beep', '|', 'boop' ]);
     t.same(parse('beep "|boop"'), [ 'beep', '|boop' ]);
-    
+
     t.same(parse('echo zing &'), [ 'echo', 'zing', { op: '&' } ]);
     t.same(parse('echo zing&'), [ 'echo', 'zing', { op: '&' } ]);
     t.same(parse('echo zing\\&'), [ 'echo', 'zing&' ]);
     t.same(parse('echo "zing\\&"'), [ 'echo', 'zing\\&' ]);
-    
+
     t.same(parse('beep;boop'), [ 'beep', { op: ';' }, 'boop' ]);
     t.same(parse('(beep;boop)'), [
         { op: '(' }, 'beep', { op: ';' }, 'boop', { op: ')' }
     ]);
-    
+
     t.same(parse('beep>boop'), [ 'beep', { op: '>' }, 'boop' ]);
     t.same(parse('beep 2>boop'), [ 'beep', '2', { op: '>' }, 'boop' ]);
     t.same(parse('beep<boop'), [ 'beep', { op: '<' }, 'boop' ]);
-    
+
     t.end();
 });
 
@@ -30,7 +32,7 @@ test('double operators', function (t) {
     t.same(parse('beep ||boop'), [ 'beep', { op: '||' }, 'boop' ]);
     t.same(parse('beep|| boop'), [ 'beep', { op: '||' }, 'boop' ]);
     t.same(parse('beep  ||   boop'), [ 'beep', { op: '||' }, 'boop' ]);
-    
+
     t.same(parse('beep && boop'), [ 'beep', { op: '&&' }, 'boop' ]);
     t.same(
         parse('beep && boop || byte'),
@@ -75,4 +77,4 @@ test('glob patterns', function (t) {
 
     t.same(parse('tap "test/*.test.js"'), ['tap', 'test/*.test.js']);
     t.end();
-})
+});

test/parse.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var test = require('tape');
 var parse = require('../').parse;
 
@@ -16,7 +18,7 @@ test('parse shell commands', function (t) {
     t.same(parse('a"b c d"e'), [ 'ab c de' ]);
     t.same(parse('a\\ b"c d"\\ e f'), [ 'a bc d e', 'f' ]);
     t.same(parse('a\\ b"c d"\\ e\'f g\' h'), [ 'a bc d ef g', 'h' ]);
-    t.same(parse("x \"bl'a\"'h'"), ['x', "bl'ah"])
+    t.same(parse("x \"bl'a\"'h'"), ['x', "bl'ah"]);
     t.same(parse("x bl^'a^'h'", {}, { escape: '^'}), ['x', "bl'a'h"]);
 
     t.end();

test/quote.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var test = require('tape');
 var quote = require('../').quote;
 
@@ -34,15 +36,15 @@ test('quote ops', function (t) {
 });
 
 test('quote windows paths', { skip: 'breaking change, disabled until 2.x' }, function (t) {
-    var path = 'C:\\projects\\node-shell-quote\\index.js'
+    var path = 'C:\\projects\\node-shell-quote\\index.js';
 
-    t.equal(quote([path, 'b', 'c d']), 'C:\\projects\\node-shell-quote\\index.js b \'c d\'')
+    t.equal(quote([path, 'b', 'c d']), 'C:\\projects\\node-shell-quote\\index.js b \'c d\'');
 
-    t.end()
-})
+    t.end();
+});
 
 test("chars for windows paths don't break out", function (t) {
-    var x = '`:\\a\\b'
-    t.equal(quote([x]), '\\`\\:\\\\a\\\\b')
-    t.end()
-})
+    var x = '`:\\a\\b';
+    t.equal(quote([x]), '\\`\\:\\\\a\\\\b');
+    t.end();
+});

test/set.js

@@ -1,3 +1,5 @@
+'use strict';
+
 var test = require('tape');
 var parse = require('../').parse;
 
@@ -19,11 +21,11 @@ test('set env vars', function (t) {
         [ 'X=7 8 9', { op: ';' }, 'printx' ]
     );
     t.same(
-        parse('X="7 8 9"; printx', function (key) {
+        parse('X="7 8 9"; printx', function () {
             t.fail('should not have matched any keys');
         }),
         [ 'X=7 8 9', { op: ';' }, 'printx' ]
     );
-    
+
     t.end();
 });