Typesafe error propagation in signal connection path (#1747)

Author: lukasIO

.changeset/early-numbers-build.md

@@ -0,0 +1,5 @@
+---
+"livekit-client": patch
+---
+
+Typesafe error propagation in signal connection path

eslint.config.mjs

@@ -2,6 +2,7 @@
 import js from '@eslint/js';
 import { configs, plugins, rules } from 'eslint-config-airbnb-extended';
 import { rules as prettierConfigRules } from 'eslint-config-prettier';
+import neverthrowMustUse from 'eslint-plugin-neverthrow-must-use';
 import prettierPlugin from 'eslint-plugin-prettier';
 
 const strictness = 'off';
@@ -31,6 +32,15 @@ const typescriptConfig = [
   rules.typescript.typescriptEslintStrict,
 ];
 
+const neverthrowConfig = [
+  {
+    name: 'neverthrow-must-use',
+    plugins: {
+      'neverthrow-must-use': neverthrowMustUse,
+    },
+  },
+];
+
 const prettierConfig = [
   // Prettier Plugin
   {
@@ -56,6 +66,7 @@ export default [
   ...typescriptConfig,
   // Prettier Config
   ...prettierConfig,
+  ...neverthrowConfig,
   {
     languageOptions: {
       parserOptions: {
@@ -158,6 +169,7 @@ export default [
       'one-var': strictness,
       'no-multi-assign': strictness,
       'new-cap': strictness,
+      'require-yield': strictness,
 
       radix: strictness,
       eqeqeq: strictness,

package.json

@@ -60,6 +60,7 @@
     "events": "^3.3.0",
     "jose": "^6.1.0",
     "loglevel": "^1.9.2",
+    "neverthrow": "^8.2.0",
     "sdp-transform": "^2.15.0",
     "ts-debounce": "^4.0.0",
     "tslib": "2.8.1",
@@ -96,6 +97,7 @@
     "eslint-config-prettier": "10.1.8",
     "eslint-plugin-compat": "^6.0.2",
     "eslint-plugin-import-x": "^4.16.1",
+    "eslint-plugin-neverthrow-must-use": "^0.1.2",
     "eslint-plugin-prettier": "^5.5.4",
     "gh-pages": "6.3.0",
     "happy-dom": "^17.2.0",