fix: fetch bad URL will not panic (#8884)

Cargo.lock

@@ -771,6 +771,16 @@ version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 
+[[package]]
+name = "form_urlencoded"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ece68d15c92e84fa4f19d3780f1294e5ca82a78a6d515f1efaabcc144688be00"
+dependencies = [
+ "matches",
+ "percent-encoding",
+]
+
 [[package]]
 name = "from_variant"
 version = "0.1.2"
@@ -3019,10 +3029,11 @@ checksum = "a156c684c91ea7d62626509bce3cb4e1d9ed5c4d978f7b4352658f96a4c26b4a"
 
 [[package]]
 name = "url"
-version = "2.1.1"
+version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "829d4a8476c35c9bf0bbce5a3b23f4106f79728039b726d292bb93bc106787cb"
+checksum = "5909f2b0817350449ed73e8bcd81c8c3c8d9a7a5d8acba4b27db277f1868976e"
 dependencies = [
+ "form_urlencoded",
  "idna",
  "matches",
  "percent-encoding",

cli/tests/unit/fetch_test.ts

@@ -27,12 +27,37 @@ unitTest(
       async (): Promise<void> => {
         await fetch("http://localhost:4000");
       },
-      Deno.errors.Http,
+      TypeError,
       "error trying to connect",
     );
   },
 );
 
+unitTest(
+  { perms: { net: true } },
+  async function fetchDnsError(): Promise<void> {
+    await assertThrowsAsync(
+      async (): Promise<void> => {
+        await fetch("http://nil/");
+      },
+      TypeError,
+      "error trying to connect",
+    );
+  },
+);
+
+unitTest(
+  { perms: { net: true } },
+  async function fetchInvalidUriError(): Promise<void> {
+    await assertThrowsAsync(
+      async (): Promise<void> => {
+        await fetch("http://<invalid>/");
+      },
+      URIError,
+    );
+  },
+);
+
 unitTest({ perms: { net: true } }, async function fetchJsonSuccess(): Promise<
   void
 > {
@@ -199,9 +224,12 @@ unitTest({ perms: { net: true } }, async function responseClone(): Promise<
 unitTest({ perms: { net: true } }, async function fetchEmptyInvalid(): Promise<
   void
 > {
-  await assertThrowsAsync(async () => {
-    await fetch("");
-  }, URIError);
+  await assertThrowsAsync(
+    async () => {
+      await fetch("");
+    },
+    URIError,
+  );
 });
 
 unitTest(

core/Cargo.toml

@@ -23,7 +23,7 @@ rusty_v8 = "0.14.0"
 serde_json = { version = "1.0", features = ["preserve_order"] }
 serde = { version = "1.0", features = ["derive"] }
 smallvec = "1.4.2"
-url = { version = "2.1.1", features = ["serde"] }
+url = { version = "2.2", features = ["serde"] }
 pin-project = "1.0.2"
 
 [[example]]

op_crates/fetch/lib.rs

@@ -8,7 +8,6 @@ use deno_core::error::AnyError;
 use deno_core::serde_json;
 use deno_core::serde_json::json;
 use deno_core::serde_json::Value;
-use deno_core::url;
 use deno_core::url::Url;
 use deno_core::AsyncRefCell;
 use deno_core::BufVec;
@@ -126,7 +125,7 @@ where
     None => Method::GET,
   };
 
-  let url_ = url::Url::parse(&url)?;
+  let url_ = Url::parse(&url)?;
 
   // Check scheme before asking for net permission
   let scheme = url_.scheme();
@@ -155,7 +154,10 @@ where
   }
   //debug!("Before fetch {}", url);
 
-  let res = request.send().await?;
+  let res = match request.send().await {
+    Ok(res) => res,
+    Err(e) => return Err(type_error(e.to_string())),
+  };
 
   //debug!("Fetch response {}", url);
   let status = res.status();