New Props API (#515)

* wip: update props api

* feat(#139, #309): enable new props api

* chore: migrate examples to new props API

* docs: update syntax guide for new props API

* chore: update examples to new props API

* chore: update docs to new Props API

* fix: hide __astroInternal from `Astro.props` consumers

* chore: remove scratchpad file

* chore: fix script error

* test: fix failing collection tests

* fix: set __astroInternal to `enumerable: false`

* chore: add changeset

* feat: warn users using old props api

1 files changed, 11 insertions, 8 deletions

diff --git a/examples/blog/src/components/MainHead.astro b/examples/blog/src/components/MainHead.astro
index dfc47fc01..fbdaa2965 100644
--- a/examples/blog/src/components/MainHead.astro
+++ b/examples/blog/src/components/MainHead.astro
@@ -1,12 +1,15 @@
 ---
-// props
-export let title: string;
-export let description: string;
-export let image: string | undefined;
-export let type: string | undefined;
-export let next: string | undefined;
-export let prev: string | undefined;
-export let canonicalURL: string | undefined;
+export interface Props {
+  title: string;
+  description: string;
+  image?: string;
+  type?: string;
+  next?: string;
+  prev?: string;
+  canonicalURL?: string;
+}
+
+const { title, description, image, type, next, prev, canonicalURL } = Astro.props as Props;
 ---
 
 <!-- Common -->