2 files changed, 10 insertions, 3 deletions
diff --git a/cli/tests/unit/error_test.ts b/cli/tests/unit/error_test.ts
index bb7a9baf8..6fdf4f762 100644
--- a/cli/tests/unit/error_test.ts
+++ b/cli/tests/unit/error_test.ts
@@ -15,6 +15,7 @@ Deno.test("Errors work", () => {
   assert(new Deno.errors.InvalidData("msg") instanceof Error);
   assert(new Deno.errors.TimedOut("msg") instanceof Error);
   assert(new Deno.errors.Interrupted("msg") instanceof Error);
+  assert(new Deno.errors.WouldBlock("msg") instanceof Error);
   assert(new Deno.errors.WriteZero("msg") instanceof Error);
   assert(new Deno.errors.UnexpectedEof("msg") instanceof Error);
   assert(new Deno.errors.BadResource("msg") instanceof Error);
diff --git a/cli/tsc/dts/lib.deno.ns.d.ts b/cli/tsc/dts/lib.deno.ns.d.ts
index 33a568b65..d81e4afcd 100644
--- a/cli/tsc/dts/lib.deno.ns.d.ts
+++ b/cli/tsc/dts/lib.deno.ns.d.ts
@@ -220,6 +220,12 @@ declare namespace Deno {
      * @category Errors */
     export class Interrupted extends Error {}
     /**
+     * Raised when the underlying operating system would need to block to
+     * complete but an asynchronous (non-blocking) API is used.
+     *
+     * @category Errors */
+    export class WouldBlock extends Error {}
+    /**
      * Raised when expecting to write to a IO buffer resulted in zero bytes
      * being written.
      *
@@ -4377,7 +4383,7 @@ declare namespace Deno {
    * const status = await Deno.permissions.query({ name: "read", path: "/etc" });
    * console.log(status.state);
    * ```
-   * 
+   *
    * ```ts
    * const status = Deno.permissions.querySync({ name: "read", path: "/etc" });
    * console.log(status.state);
@@ -4391,7 +4397,7 @@ declare namespace Deno {
    * const status = await Deno.permissions.revoke({ name: "run" });
    * assert(status.state !== "granted")
    * ```
-   * 
+   *
    * ```ts
    * import { assert } from "https://deno.land/std/testing/asserts.ts";
    *
@@ -4409,7 +4415,7 @@ declare namespace Deno {
    *   console.log("'env' permission is denied.");
    * }
    * ```
-   * 
+   *
    * ```ts
    * const status = Deno.permissions.requestSync({ name: "env" });
    * if (status.state === "granted") {