feat: integrate eslint

eslint.config.mjs

@@ -0,0 +1,82 @@
+import js from "@eslint/js";
+import globals from "globals";
+import {defineConfig} from "eslint/config";
+
+const jestGlobals = {
+    beforeAll: "readonly",
+    beforeEach: "readonly",
+    afterAll: "readonly",
+    afterEach: "readonly",
+    describe: "readonly",
+    expect: "readonly",
+    fit: "readonly",
+    it: "readonly",
+    jest: "readonly",
+    test: "readonly",
+    xdescribe: "readonly",
+    xit: "readonly",
+    xtest: "readonly"
+};
+
+export default defineConfig([
+    {
+        ignores: [
+            "dist/**",
+            "coverage/**",
+            ".npm-cache/**",
+            "test/browser/.npm-cache/**"
+        ]
+    },
+    {
+        files: ["**/*.{js,mjs,cjs}"],
+        plugins: {js},
+        extends: ["js/recommended"],
+        languageOptions: {globals: {...globals.browser, ...globals.node}},
+        rules: {
+            indent: ["warn", 4, { SwitchCase: 1 }],
+            "no-const-assign": "error",
+            "no-constant-condition": ["error", { checkLoops: false }],
+            "no-debugger": "error",
+            "no-dupe-args": "error",
+            "no-dupe-class-members": "error",
+            "no-dupe-keys": "error",
+            "no-duplicate-case": "error",
+            "no-empty-pattern": "error",
+            "no-ex-assign": "error",
+            "no-func-assign": "error",
+            "no-import-assign": "error",
+            "no-irregular-whitespace": "error",
+            "no-loss-of-precision": "error",
+            "no-new-native-nonconstructor": "error",
+            "no-obj-calls": "error",
+            "no-prototype-builtins": "off",
+            "no-redeclare": "error",
+            "no-self-assign": "error",
+            "no-self-compare": "error",
+            "no-shadow-restricted-names": "error",
+            "no-sparse-arrays": "error",
+            "no-this-before-super": "error",
+            "no-undef": "warn",
+            "no-unreachable": "error",
+            "no-unsafe-finally": "error",
+            "no-unsafe-negation": "error",
+            "no-unused-private-class-members": "warn",
+            "no-unused-vars": ["warn", { argsIgnorePattern: "^_", caughtErrorsIgnorePattern: "^_" }],
+            "no-use-before-define": ["warn", { functions: false, classes: true, variables: true }],
+            "require-yield": "error",
+            "use-isnan": "error",
+            "valid-typeof": "error",
+        }
+    },
+    {
+        files: ["test/browser/**/*.js"],
+        languageOptions: {
+            globals: {
+                ...globals.browser,
+                ...globals.node,
+                ...jestGlobals,
+                fail: "readonly"
+            }
+        }
+    },
+]);

index.js

@@ -29,16 +29,8 @@ const operation = require('./modules/operation.js');
 const constants = require('./constants.js');
 
 // ===== OPTIONAL (browser/RN) =====
-let b4a;
-let sodium;
-
-try {
-    b4a = require('b4a');
-} catch {}
-
-try {
-    sodium = require('sodium-universal');
-} catch {}
+const b4a = require('b4a');
+const sodium = require('sodium-universal');
 
 // ===== BASE =====
 const sign = signature.sign;
@@ -63,8 +55,8 @@ const exported = {
 
 // ===== BROWSER / RN EXTENSIONS =====
 if (isBrowser || isRN) {
-    if (b4a) exported.b4a = b4a;
-    if (sodium) exported.sodium = sodium;
+    exported.b4a = b4a;
+    exported.sodium = sodium;
 }
 
-module.exports = exported;
+module.exports = exported;