fix: add missing strict mode directives (#300)

.eslintrc.js

@@ -1,3 +1,5 @@
+"use strict";
+
 module.exports = {
 	env: {
 		es2019: true,
@@ -34,6 +36,8 @@ module.exports = {
 	],
 	parserOptions: {
 		ecmaVersion: 2019,
+		// Explicitly tell ESLint to parse JavaScript as CommonJS, as airbnb-base sets this to "modules" for ECMAScript
+		sourceType: "script",
 	},
 	plugins: [
 		"import",
@@ -53,5 +57,6 @@ module.exports = {
 		"promise/prefer-await-to-callbacks": "warn",
 		"promise/prefer-await-to-then": "warn",
 		"security/detect-object-injection": "off",
+		strict: ["error", "global"],
 	},
 };

scripts/.eslintrc.js

@@ -1,3 +1,5 @@
+"use strict";
+
 module.exports = {
 	rules: {
 		"import/no-extraneous-dependencies": [

scripts/license-checker.js

@@ -1,5 +1,8 @@
 /* eslint-disable security/detect-object-injection */
 /* eslint-disable security-node/detect-crlf */
+
+"use strict";
+
 const checker = require("license-checker");
 const copyLeftLicenses = require("spdx-copyleft");
 const { promisify } = require("util");

src/index.js

@@ -1,3 +1,5 @@
+"use strict";
+
 const fs = require("fs/promises");
 const path = require("upath");
 const semver = require("semver");

src/index.test.js

@@ -1,5 +1,8 @@
 /* eslint-disable jest/no-conditional-expect */
 /* eslint-disable security/detect-non-literal-fs-filename */
+
+"use strict";
+
 const isHtml = require("is-html");
 const path = require("upath");
 const semver = require("semver");

test_resources/utils/btPowerSet.js

@@ -1,5 +1,7 @@
 /* eslint-disable security/detect-object-injection */
 
+"use strict";
+
 /**
  * @description Bitwise power-set function, adapted from algorithm at
  * https://github.com/trekhleb/javascript-algorithms/blob/master/src/algorithms/sets/power-set/btPowerSet.js

test_resources/utils/genCombos.js

@@ -1,3 +1,5 @@
+"use strict";
+
 const btPowerSetRecursive = require("./btPowerSet");
 
 /**