diff --git a/.github/workflows/test-integration-cli.yml b/.github/workflows/test-integration-cli.yml
index 4ef40e68c..0456e1792 100644
--- a/.github/workflows/test-integration-cli.yml
+++ b/.github/workflows/test-integration-cli.yml
@@ -16,7 +16,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        node: [14]
+        node: [12]
     runs-on: ${{ matrix.os }}
     env:
       TURBO_REMOTE_ONLY: true
diff --git a/.github/workflows/test-unit.yml b/.github/workflows/test-unit.yml
index 78f0518db..c4c8f6b46 100644
--- a/.github/workflows/test-unit.yml
+++ b/.github/workflows/test-unit.yml
@@ -44,4 +44,4 @@ jobs:
       - run: yarn workspace vercel run coverage
         if: matrix.os == 'ubuntu-latest' && matrix.node == 14 # only run coverage once
         env:
-          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
\ No newline at end of file
diff --git a/api/tsconfig.json b/api/tsconfig.json
index 3f930ba0b..b7e5e6845 100644
--- a/api/tsconfig.json
+++ b/api/tsconfig.json
@@ -1,6 +1,6 @@
 {
   "compilerOptions": {
-    "target": "ES2020",
+    "target": "esnext",
     "skipLibCheck": true,
     "strict": false,
     "forceConsistentCasingInFileNames": true,
diff --git a/packages/build-utils/tsconfig.json b/packages/build-utils/tsconfig.json
index 78e5da5b9..27c85fdba 100644
--- a/packages/build-utils/tsconfig.json
+++ b/packages/build-utils/tsconfig.json
@@ -2,7 +2,7 @@
   "compilerOptions": {
     "declaration": true,
     "esModuleInterop": true,
-    "lib": ["ES2020"],
+    "lib": ["esnext"],
     "module": "commonjs",
     "moduleResolution": "node",
     "noEmitOnError": true,
@@ -13,7 +13,7 @@
     "outDir": "./dist",
     "types": ["node", "jest"],
     "strict": true,
-    "target": "ES2020"
+    "target": "es2019"
   },
   "include": ["src/**/*"],
   "exclude": ["node_modules"]
diff --git a/packages/cli/package.json b/packages/cli/package.json
index a12881ae7..5c0d7c4bc 100644
--- a/packages/cli/package.json
+++ b/packages/cli/package.json
@@ -40,7 +40,7 @@
     ]
   },
   "engines": {
-    "node": ">= 14"
+    "node": ">= 12"
   },
   "dependencies": {
     "@vercel/build-utils": "3.1.1-canary.0",
diff --git a/packages/cli/tsconfig.json b/packages/cli/tsconfig.json
index 00e3e3600..ad207e0df 100644
--- a/packages/cli/tsconfig.json
+++ b/packages/cli/tsconfig.json
@@ -5,10 +5,10 @@
     "noFallthroughCasesInSwitch": true,
     "moduleResolution": "node",
     "module": "commonjs",
-    "target": "ES2020",
+    "target": "es2019",
     "esModuleInterop": true,
     "allowJs": true,
-    "lib": ["ES2020"],
+    "lib": ["esnext"],
     "resolveJsonModule": true,
     "sourceMap": true,
     "outDir": "./dist",
diff --git a/packages/client/package.json b/packages/client/package.json
index a0f278c94..76736bd9e 100644
--- a/packages/client/package.json
+++ b/packages/client/package.json
@@ -20,7 +20,7 @@
     "test-unit": "yarn test tests/unit.*test.*"
   },
   "engines": {
-    "node": ">= 14"
+    "node": ">= 12"
   },
   "devDependencies": {
     "@types/async-retry": "1.4.1",
diff --git a/packages/client/tsconfig.json b/packages/client/tsconfig.json
index 366c17969..fd017691e 100644
--- a/packages/client/tsconfig.json
+++ b/packages/client/tsconfig.json
@@ -2,7 +2,7 @@
   "compilerOptions": {
     "declaration": true,
     "esModuleInterop": true,
-    "lib": ["ES2020"],
+    "lib": ["esnext"],
     "module": "commonjs",
     "moduleResolution": "node",
     "outDir": "dist",
@@ -12,7 +12,7 @@
     "noUnusedLocals": true,
     "noUnusedParameters": true,
     "strict": true,
-    "target": "ES2020"
+    "target": "es2019"
   },
   "include": ["./src"]
 }
diff --git a/packages/frameworks/tsconfig.json b/packages/frameworks/tsconfig.json
index f9dcb8f8d..8174f7fdd 100644
--- a/packages/frameworks/tsconfig.json
+++ b/packages/frameworks/tsconfig.json
@@ -2,7 +2,7 @@
   "compilerOptions": {
     "declaration": true,
     "esModuleInterop": true,
-    "lib": ["ES2020"],
+    "lib": ["esnext"],
     "module": "commonjs",
     "moduleResolution": "node",
     "noEmitOnError": true,
@@ -13,7 +13,7 @@
     "outDir": "./dist",
     "types": ["node", "jest"],
     "strict": true,
-    "target": "ES2020"
+    "target": "esnext"
   },
   "include": ["src/*.ts"],
   "exclude": ["node_modules"]
diff --git a/packages/go/tsconfig.json b/packages/go/tsconfig.json
index 43956c3dc..7e081145c 100644
--- a/packages/go/tsconfig.json
+++ b/packages/go/tsconfig.json
@@ -2,7 +2,7 @@
   "compilerOptions": {
     "declaration": false,
     "esModuleInterop": true,
-    "lib": ["ES2020"],
+    "lib": ["esnext"],
     "module": "commonjs",
     "moduleResolution": "node",
     "noEmitOnError": true,
@@ -13,6 +13,6 @@
     "noImplicitThis": false,
     "types": ["node"],
     "strict": true,
-    "target": "ES2020"
+    "target": "es2018"
   }
 }
diff --git a/packages/next/tsconfig.json b/packages/next/tsconfig.json
index fbf71d81a..4cc24fd01 100644
--- a/packages/next/tsconfig.json
+++ b/packages/next/tsconfig.json
@@ -2,8 +2,8 @@
   "compilerOptions": {
     "strict": true,
     "esModuleInterop": true,
-    "lib": ["ES2020"],
-    "target": "ES2020",
+    "lib": ["esnext"],
+    "target": "es2018",
     "module": "commonjs",
     "outDir": "dist",
     "sourceMap": false,
diff --git a/packages/node-bridge/tsconfig.json b/packages/node-bridge/tsconfig.json
index 3cd47c215..238855927 100644
--- a/packages/node-bridge/tsconfig.json
+++ b/packages/node-bridge/tsconfig.json
@@ -2,7 +2,7 @@
   "compilerOptions": {
     "allowJs": true,
     "checkJs": true,
-    "lib": ["ES2020"],
+    "lib": ["esnext"],
     "noEmit": true,
     "noImplicitReturns": true,
     "strict": true,
diff --git a/packages/node/src/typescript.ts b/packages/node/src/typescript.ts
index 8bd2fde4e..998e7ac67 100644
--- a/packages/node/src/typescript.ts
+++ b/packages/node/src/typescript.ts
@@ -450,6 +450,7 @@ export function fixConfig(
   delete config.compilerOptions.tsBuildInfoFile;
   delete config.compilerOptions.incremental;
 
+  // Target esnext output by default (instead of ES3).
   // This will prevent TS from polyfill/downlevel emit.
   if (config.compilerOptions.target === undefined) {
     // See https://github.com/tsconfig/bases/tree/main/bases
diff --git a/packages/node/tsconfig.json b/packages/node/tsconfig.json
index 428029a3b..66c3f63ba 100644
--- a/packages/node/tsconfig.json
+++ b/packages/node/tsconfig.json
@@ -2,8 +2,8 @@
   "compilerOptions": {
     "strict": true,
     "esModuleInterop": true,
-    "lib": ["ES2020"],
-    "target": "ES2020",
+    "lib": ["esnext"],
+    "target": "es2018",
     "module": "commonjs",
     "outDir": "dist",
     "sourceMap": false,
diff --git a/packages/python/tsconfig.json b/packages/python/tsconfig.json
index fa8d24ad9..25c0240ff 100644
--- a/packages/python/tsconfig.json
+++ b/packages/python/tsconfig.json
@@ -2,7 +2,7 @@
   "compilerOptions": {
     "declaration": true,
     "esModuleInterop": true,
-    "lib": ["ES2020"],
+    "lib": ["esnext"],
     "module": "commonjs",
     "moduleResolution": "node",
     "noEmitOnError": true,
@@ -13,7 +13,7 @@
     "outDir": "dist",
     "types": ["node", "jest"],
     "strict": true,
-    "target": "ES2020"
+    "target": "es2018"
   },
   "include": ["src/**/*"],
   "exclude": ["node_modules"]
diff --git a/packages/redwood/tsconfig.json b/packages/redwood/tsconfig.json
index 9ed3b7367..7734fbc21 100644
--- a/packages/redwood/tsconfig.json
+++ b/packages/redwood/tsconfig.json
@@ -2,7 +2,7 @@
   "compilerOptions": {
     "declaration": false,
     "esModuleInterop": true,
-    "lib": ["ES2020"],
+    "lib": ["esnext"],
     "module": "commonjs",
     "moduleResolution": "node",
     "noEmitOnError": true,
@@ -13,6 +13,6 @@
     "outDir": "dist",
     "types": ["node"],
     "strict": true,
-    "target": "ES2020"
+    "target": "es2019"
   }
 }
diff --git a/packages/remix/tsconfig.json b/packages/remix/tsconfig.json
index c3de57e2b..ec15f71eb 100644
--- a/packages/remix/tsconfig.json
+++ b/packages/remix/tsconfig.json
@@ -2,7 +2,7 @@
   "compilerOptions": {
     "declaration": true,
     "esModuleInterop": true,
-    "lib": ["ES2020"],
+    "lib": ["esnext"],
     "module": "commonjs",
     "moduleResolution": "node",
     "noEmitOnError": true,
@@ -13,7 +13,7 @@
     "outDir": "./dist",
     "types": ["node", "jest"],
     "strict": true,
-    "target": "ES2020",
+    "target": "es2019",
     "sourceMap": true
   },
   "include": ["src/**/*"],
diff --git a/packages/routing-utils/tsconfig.json b/packages/routing-utils/tsconfig.json
index 1e558bbf8..f7055b450 100644
--- a/packages/routing-utils/tsconfig.json
+++ b/packages/routing-utils/tsconfig.json
@@ -2,8 +2,8 @@
   "compilerOptions": {
     "strict": true,
     "esModuleInterop": true,
-    "lib": ["ES2020"],
-    "target": "ES2020",
+    "lib": ["esnext"],
+    "target": "esnext",
     "module": "commonjs",
     "outDir": "dist",
     "sourceMap": false,
diff --git a/packages/ruby/tsconfig.json b/packages/ruby/tsconfig.json
index dc61dbbf1..56e32aacb 100644
--- a/packages/ruby/tsconfig.json
+++ b/packages/ruby/tsconfig.json
@@ -2,7 +2,7 @@
   "compilerOptions": {
     "declaration": true,
     "esModuleInterop": true,
-    "lib": ["ES2020"],
+    "lib": ["esnext"],
     "module": "commonjs",
     "moduleResolution": "node",
     "noEmitOnError": true,
@@ -12,6 +12,6 @@
     "noUnusedParameters": true,
     "outDir": "dist",
     "strict": true,
-    "target": "ES2020"
+    "target": "esnext"
   }
 }
diff --git a/packages/static-build/tsconfig.json b/packages/static-build/tsconfig.json
index 45f910702..0a00e29f8 100644
--- a/packages/static-build/tsconfig.json
+++ b/packages/static-build/tsconfig.json
@@ -2,7 +2,7 @@
   "compilerOptions": {
     "declaration": false,
     "esModuleInterop": true,
-    "lib": ["ES2020"],
+    "lib": ["esnext"],
     "module": "commonjs",
     "moduleResolution": "node",
     "noEmitOnError": true,
@@ -13,7 +13,7 @@
     "outDir": "dist",
     "types": ["node", "jest"],
     "strict": true,
-    "target": "ES2020"
+    "target": "es2018"
   },
   "include": ["src/**/*"],
   "exclude": ["test/fixtures"]
diff --git a/packages/static-config/tsconfig.json b/packages/static-config/tsconfig.json
index 8d5b658d6..64a78e702 100644
--- a/packages/static-config/tsconfig.json
+++ b/packages/static-config/tsconfig.json
@@ -2,8 +2,8 @@
   "compilerOptions": {
     "strict": true,
     "esModuleInterop": true,
-    "lib": ["ES2020"],
-    "target": "ES2020",
+    "lib": ["esnext"],
+    "target": "es2018",
     "module": "commonjs",
     "outDir": "dist",
     "sourceMap": true,
diff --git a/test/lib/deployment/now-deploy.js b/test/lib/deployment/now-deploy.js
index 558f577e3..72ed2a9fc 100644
--- a/test/lib/deployment/now-deploy.js
+++ b/test/lib/deployment/now-deploy.js
@@ -72,15 +72,7 @@ async function nowDeploy(bodies, randomness, uploadNowJson) {
     if (json.error && json.error.code === 'missing_files')
       throw new Error('Missing files');
     deploymentId = json.id;
-    deploymentUrl = json.url || '';
-
-    if (!deploymentUrl.startsWith('https')) {
-      // if it doesn't look like an absolute URL, fetch will not work
-      console.log(
-        `Warning: deployment (${deploymentId}) returned deployment url of "${deploymentUrl}", which is not absolute. Prepending "https://".`
-      );
-      deploymentUrl = 'https://' + deploymentUrl;
-    }
+    deploymentUrl = json.url;
   }
 
   logWithinTest('id', deploymentId);
@@ -96,9 +88,7 @@ async function nowDeploy(bodies, randomness, uploadNowJson) {
     const { readyState } = deployment;
     if (readyState === 'ERROR') {
       logWithinTest('state is ERROR, throwing');
-      const error = new Error(
-        `State of https://${deploymentUrl} is ERROR: ${deployment.errorMessage}`
-      );
+      const error = new Error(`State of https://${deploymentUrl} is ERROR`);
       error.deployment = deployment;
       throw error;
     }