fix(*): Switch the compilation target to es2019 for all client-side SDK (#3113)

This enables support for older iOS mobile browsers. The client-side Clerk SDK now support all webkit-based browsers from version iOS 12 and upwards.

This change has minimal impact on the bundle-size and the generated code. From now on, changing the target to a newer version should be considered a breaking change that can only be released after a major version bump.

Author: nikosdouvlis

.changeset/light-beers-share.md

@@ -0,0 +1,9 @@
+---
+'@clerk/localizations': patch
+'@clerk/clerk-js': patch
+'@clerk/nextjs': patch
+'@clerk/shared': patch
+'@clerk/clerk-react': patch
+---
+
+Enable support for older browsers starting with Safari 12 by switching the compilation target to es2019 for all client-side SDKs

package-lock.json

@@ -2,7 +2,6 @@
   "extends": "./tsconfig.json",
   "compilerOptions": {
     "sourceMap": true,
-    "target": "ESNext",
     "noImplicitReturns": true,
     "noUnusedLocals": true,
     "noUnusedParameters": true

packages/clerk-js/tsconfig.dev.json

@@ -16,7 +16,7 @@
     "resolveJsonModule": true,
     "sourceMap": false,
     "strict": true,
-    "target": "ES2020",
+    "target": "ES2019",
     "useUnknownInCatchVariables": false,
     "declaration": false,
     "jsx": "react-jsx",

packages/clerk-js/tsconfig.json

@@ -7,7 +7,7 @@
     "esModuleInterop": true,
     "skipLibCheck": true,
     "allowJs": true,
-    "target": "ES2020",
+    "target": "ES2019",
     "emitDeclarationOnly": true,
     "declaration": true,
     "declarationMap": true,

packages/localizations/tsconfig.json

@@ -19,7 +19,7 @@
     "skipLibCheck": true,
     "sourceMap": false,
     "strict": true,
-    "target": "ES2020",
+    "target": "ES2019",
     "types": ["jest"]
   },
   "include": ["src"]

packages/nextjs/tsconfig.json

@@ -18,7 +18,7 @@
     "skipLibCheck": true,
     "sourceMap": false,
     "strict": true,
-    "target": "ES2020"
+    "target": "ES2019"
   },
   "include": ["src"],
   "exclude": ["src/**/*.test.ts", "src/**/*.test.tsx"]

packages/react/tsconfig.json

@@ -1,6 +1,6 @@
 {
   "compilerOptions": {
-    "target": "ES2020",
+    "target": "ES2019",
     "esModuleInterop": true,
     "forceConsistentCasingInFileNames": true,
     "isolatedModules": true,