diff --git a/examples/blog-multiple-authors/package.json b/examples/blog-multiple-authors/package.json
index b239a9e4c..01d5ea50d 100644
--- a/examples/blog-multiple-authors/package.json
+++ b/examples/blog-multiple-authors/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.17.3"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/blog/package.json b/examples/blog/package.json
index 365d640af..2e58e3709 100644
--- a/examples/blog/package.json
+++ b/examples/blog/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.17.3"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/docs/package.json b/examples/docs/package.json
index e2c1252d8..360e39e54 100644
--- a/examples/docs/package.json
+++ b/examples/docs/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.17.3"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/framework-multiple/package.json b/examples/framework-multiple/package.json
index 89cb69a74..3c4b18796 100644
--- a/examples/framework-multiple/package.json
+++ b/examples/framework-multiple/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.17.3"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/framework-preact/package.json b/examples/framework-preact/package.json
index 77eb1e875..0fac1c48f 100644
--- a/examples/framework-preact/package.json
+++ b/examples/framework-preact/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.17.3"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/framework-react/package.json b/examples/framework-react/package.json
index c443caf21..5f28588be 100644
--- a/examples/framework-react/package.json
+++ b/examples/framework-react/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.17.3"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/framework-svelte/package.json b/examples/framework-svelte/package.json
index e2e149a90..21e1022b2 100644
--- a/examples/framework-svelte/package.json
+++ b/examples/framework-svelte/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.17.3"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/framework-vue/package.json b/examples/framework-vue/package.json
index 9bdacbc8b..250f6e969 100644
--- a/examples/framework-vue/package.json
+++ b/examples/framework-vue/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.17.3"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/portfolio/package.json b/examples/portfolio/package.json
index 89e0cb393..8b02d024c 100644
--- a/examples/portfolio/package.json
+++ b/examples/portfolio/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.17.3"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/snowpack/package.json b/examples/snowpack/package.json
index d36abe5b5..8e1140812 100644
--- a/examples/snowpack/package.json
+++ b/examples/snowpack/package.json
@@ -11,7 +11,7 @@
     "lint": "prettier --check \"src/**/*.js\""
   },
   "dependencies": {
-    "astro": "^0.17.2",
+    "astro": "^0.17.3",
     "date-fns": "^2.19.0",
     "deepmerge": "^4.2.2",
     "docsearch.js": "^2.6.3",
@@ -25,7 +25,7 @@
     "@11ty/eleventy-plugin-syntaxhighlight": "^3.0.4",
     "@contentful/rich-text-html-renderer": "^14.1.2",
     "@contentful/rich-text-types": "^14.1.2",
-    "astro": "^0.17.2",
+    "astro": "^0.17.3",
     "eleventy-plugin-nesting-toc": "^1.2.0",
     "luxon": "^1.25.0",
     "markdown-it": "^12.0.2",
diff --git a/examples/starter/package.json b/examples/starter/package.json
index e513bc5d9..0aaa95094 100644
--- a/examples/starter/package.json
+++ b/examples/starter/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.17.3"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/with-markdown-plugins/package.json b/examples/with-markdown-plugins/package.json
index d21922c47..d58690015 100644
--- a/examples/with-markdown-plugins/package.json
+++ b/examples/with-markdown-plugins/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2",
+    "astro": "^0.17.3",
     "rehype-add-classes": "^1.0.0",
     "rehype-toc": "^3.0.2",
     "remark-autolink-headings": "^6.0.1",
diff --git a/examples/with-markdown/package.json b/examples/with-markdown/package.json
index cc925a789..7ca771f33 100644
--- a/examples/with-markdown/package.json
+++ b/examples/with-markdown/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.17.3"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/examples/with-nanostores/package.json b/examples/with-nanostores/package.json
index ad1287718..d42668666 100644
--- a/examples/with-nanostores/package.json
+++ b/examples/with-nanostores/package.json
@@ -7,7 +7,7 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.17.3"
   },
   "dependencies": {
     "nanostores": "^0.3.3"
diff --git a/examples/with-tailwindcss/package.json b/examples/with-tailwindcss/package.json
index b7a0ffd36..5d7d06d4f 100644
--- a/examples/with-tailwindcss/package.json
+++ b/examples/with-tailwindcss/package.json
@@ -8,7 +8,7 @@
   },
   "devDependencies": {
     "tailwindcss": "^2.1.2",
-    "astro": "^0.17.2"
+    "astro": "^0.17.3"
   },
   "snowpack": {
     "workspaceRoot": "../.."
diff --git a/packages/astro-parser/tsconfig.json b/packages/astro-parser/tsconfig.json
index 7456703e4..ce4208f31 100644
--- a/packages/astro-parser/tsconfig.json
+++ b/packages/astro-parser/tsconfig.json
@@ -2,7 +2,7 @@
   "extends": "../../tsconfig.base.json",
   "include": ["src"],
   "compilerOptions": {
-    "target": "ES2020",
+    "target": "ES2019",
     "module": "CommonJS",
     "outDir": "./dist"
   }
diff --git a/packages/astro/CHANGELOG.md b/packages/astro/CHANGELOG.md
index 63e19065f..c80ba4cb3 100644
--- a/packages/astro/CHANGELOG.md
+++ b/packages/astro/CHANGELOG.md
@@ -1,5 +1,11 @@
 # astro
 
+## 0.17.3
+
+### Patch Changes
+
+- Update compile target to better support Node v12.
+
 ## 0.17.2
 
 ### Patch Changes
diff --git a/packages/astro/package.json b/packages/astro/package.json
index 6d1e95892..58ab96a49 100644
--- a/packages/astro/package.json
+++ b/packages/astro/package.json
@@ -1,6 +1,6 @@
 {
   "name": "astro",
-  "version": "0.17.2",
+  "version": "0.17.3",
   "author": "Skypack",
   "license": "MIT",
   "type": "module",
diff --git a/packages/astro/src/compiler/index.ts b/packages/astro/src/compiler/index.ts
index 5f295e044..22479130d 100644
--- a/packages/astro/src/compiler/index.ts
+++ b/packages/astro/src/compiler/index.ts
@@ -135,9 +135,9 @@ async function __render(props, ...children) {
   const Astro = {
     props,
     site: new URL('/', ${JSON.stringify(site)}),
-    css: props[__astroInternal]?.css || [],
-    request: props[__astroInternal]?.request || {},
-    isPage: props[__astroInternal]?.isPage || false
+    css: (props[__astroInternal] && props[__astroInternal].css) || [],
+    request: (props[__astroInternal] && props[__astroInternal].request) || {},
+    isPage: (props[__astroInternal] && props[__astroInternal].isPage) || false,
   };
 
   ${result.script}
diff --git a/packages/astro/tsconfig.json b/packages/astro/tsconfig.json
index 8f0cdf74d..6b3c4ca88 100644
--- a/packages/astro/tsconfig.json
+++ b/packages/astro/tsconfig.json
@@ -3,7 +3,7 @@
   "include": ["src", "index.d.ts"],
   "compilerOptions": {
     "allowJs": true,
-    "target": "ES2020",
+    "target": "ES2019",
     "module": "ES2020",
     "outDir": "./dist",
     "declarationDir": "./dist/types"
diff --git a/packages/create-astro/tsconfig.json b/packages/create-astro/tsconfig.json
index 8f0cdf74d..6b3c4ca88 100644
--- a/packages/create-astro/tsconfig.json
+++ b/packages/create-astro/tsconfig.json
@@ -3,7 +3,7 @@
   "include": ["src", "index.d.ts"],
   "compilerOptions": {
     "allowJs": true,
-    "target": "ES2020",
+    "target": "ES2019",
     "module": "ES2020",
     "outDir": "./dist",
     "declarationDir": "./dist/types"
diff --git a/packages/markdown-support/tsconfig.json b/packages/markdown-support/tsconfig.json
index 13d42008a..c0d6d7154 100644
--- a/packages/markdown-support/tsconfig.json
+++ b/packages/markdown-support/tsconfig.json
@@ -3,7 +3,7 @@
   "include": ["src"],
   "compilerOptions": {
     "allowJs": true,
-    "target": "ES2020",
+    "target": "ES2019",
     "module": "CommonJS",
     "outDir": "./dist"
   }
diff --git a/scripts/cmd/build.js b/scripts/cmd/build.js
index dd2b2fd82..cc62754f7 100644
--- a/scripts/cmd/build.js
+++ b/scripts/cmd/build.js
@@ -11,7 +11,9 @@ const defaultConfig = {
   minify: false,
   format: 'esm',
   platform: 'node',
-  target: 'node14',
+  // There's an issue with 'node12.20' compiling ESM to CJS
+  // so use 'node13.2' instead. V8 support should be similar.
+  target: 'node13.2',
   sourcemap: 'inline',
   sourcesContent: false,
 };
diff --git a/www/package.json b/www/package.json
index 7b4ae0cb4..5847cca0b 100644
--- a/www/package.json
+++ b/www/package.json
@@ -7,6 +7,6 @@
     "build": "astro build"
   },
   "devDependencies": {
-    "astro": "^0.17.2"
+    "astro": "^0.17.3"
   }
 }