feat: add deno-fetch-auto-proxy-mod.ts

libraries/deno-fetch-auto-proxy-mod.ts

@@ -0,0 +1,18 @@
+export function getEnvironmentProxy(): string | undefined {
+    return Deno.env.get("ALL_PROXY") || Deno.env.get("HTTPS_PROXY") ||
+        Deno.env.get("HTTP_PROXY");
+}
+
+export function getFetchAutoProxyInit(): RequestInit | undefined {
+    const environmentProxy = getEnvironmentProxy();
+    if (environmentProxy) {
+        return {
+            client: Deno.createHttpClient({
+                proxy: {
+                    url: environmentProxy,
+                },
+            }),
+        } as RequestInit;
+    }
+    return undefined;
+}