Adds support base64 encoding in Netlify Functions (#3592)

* Adding support for base64 encoded responses in Netlify Functions

* chore: add changeset

* removing the regex check for a more simple header-based check

* nit: cleaning up the readme a bit

2 files changed, 22 insertions, 0 deletions

diff --git a/packages/integrations/netlify/test/functions/fixtures/base64-response/src/pages/font.js b/packages/integrations/netlify/test/functions/fixtures/base64-response/src/pages/font.js
new file mode 100644
index 000000000..3ec4c8364
--- /dev/null
+++ b/packages/integrations/netlify/test/functions/fixtures/base64-response/src/pages/font.js
@@ -0,0 +1,11 @@
+
+export function get() {
+	const buffer = Buffer.from('base64 test font', 'utf-8')
+
+  return new Response(buffer, {
+    status: 200,
+		headers: {
+			'Content-Type': 'font/otf'
+		}
+  });
+}
diff --git a/packages/integrations/netlify/test/functions/fixtures/base64-response/src/pages/image.js b/packages/integrations/netlify/test/functions/fixtures/base64-response/src/pages/image.js
new file mode 100644
index 000000000..ca3b4d9d3
--- /dev/null
+++ b/packages/integrations/netlify/test/functions/fixtures/base64-response/src/pages/image.js
@@ -0,0 +1,11 @@
+
+export function get() {
+	const buffer = Buffer.from('base64 test string', 'utf-8')
+
+  return new Response(buffer, {
+    status: 200,
+		headers: {
+			'content-type': 'image/jpeg;foo=foo'
+		}
+  });
+}