add netlify handler

Author: acao

package.json

@@ -118,6 +118,7 @@
     "@babel/plugin-proposal-optional-chaining": "^7.21.0",
     "@babel/preset-env": "^7.22.4",
     "@babel/preset-typescript": "^7.21.5",
+    "@netlify/functions": "^1.6.0",
     "@rollup/plugin-terser": "^0.4.3",
     "@rollup/plugin-typescript": "^11.1.1",
     "@semantic-release/changelog": "^6.0.3",

src/use/netlify.ts

@@ -0,0 +1,61 @@
+import {
+  createHandler as createRawHandler,
+  HandlerOptions as RawHandlerOptions,
+  OperationContext,
+} from '../handler';
+
+import type {
+  Handler,
+  HandlerEvent,
+  HandlerContext
+} from '@netlify/functions';
+
+export interface RequestContext {
+  req: HandlerEvent;
+  ctx: HandlerContext
+}
+/**
+ * Handler options when using the netlify adapter
+ *
+ * @category Server/fetch
+ */
+export type HandlerOptions<Context extends OperationContext = undefined> =
+  RawHandlerOptions<HandlerEvent, RequestContext, Context>;
+
+/**
+ * Create a GraphQL over HTTP spec compliant request handler for netlify functions
+ *
+ * @category Server/fetch
+ */
+export function createHandler<Context extends OperationContext = undefined>(
+  options: HandlerOptions<Context>,
+): Handler {
+  const handler = createRawHandler(options);
+  return async function handleRequest(req, ctx) {
+    try {
+      const [body, init] = await handler({
+        method: req.httpMethod,
+        url: req.path,
+        headers: req.headers,
+        body: req.body,
+        raw: req,
+        context: { req, ctx },
+      });
+      return {
+        // if body is null, return undefined
+        body: body ?? undefined,
+        statusCode: init.status,
+        ...init,
+      };
+    } catch (err) {
+      // The handler shouldnt throw errors.
+      // If you wish to handle them differently, consider implementing your own request handler.
+      console.error(
+        'Internal error occurred during request handling. ' +
+          'Please check your implementation.',
+        err,
+      );
+      return { statusCode: 500 };
+    }
+  };
+}

yarn.lock

@@ -3406,6 +3406,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@netlify/functions@npm:^1.6.0":
+  version: 1.6.0
+  resolution: "@netlify/functions@npm:1.6.0"
+  dependencies:
+    is-promise: ^4.0.0
+  checksum: ecff9a1161b2df94d139431e7a2b42d9790cf4ec250ad3aec57935cc1b1e78beccfe855c6e5522311baefce84b91ed690904aedf02b2511eaaafdc8f6daab75e
+  languageName: node
+  linkType: hard
+
 "@nodelib/fs.scandir@npm:2.1.5":
   version: 2.1.5
   resolution: "@nodelib/fs.scandir@npm:2.1.5"
@@ -7701,6 +7710,7 @@ __metadata:
     "@babel/plugin-proposal-optional-chaining": ^7.21.0
     "@babel/preset-env": ^7.22.4
     "@babel/preset-typescript": ^7.21.5
+    "@netlify/functions": ^1.6.0
     "@rollup/plugin-terser": ^0.4.3
     "@rollup/plugin-typescript": ^11.1.1
     "@semantic-release/changelog": ^6.0.3
@@ -8501,6 +8511,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"is-promise@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "is-promise@npm:4.0.0"
+  checksum: 0b46517ad47b00b6358fd6553c83ec1f6ba9acd7ffb3d30a0bf519c5c69e7147c132430452351b8a9fc198f8dd6c4f76f8e6f5a7f100f8c77d57d9e0f4261a8a
+  languageName: node
+  linkType: hard
+
 "is-property@npm:^1.0.2":
   version: 1.0.2
   resolution: "is-property@npm:1.0.2"