refactor: re-export anyhow from deno_core (#12777)

36 files changed, 165 insertions, 179 deletions

diff --git a/cli/ast/mod.rs b/cli/ast/mod.rs
index a6cd86552..ac3dd5887 100644
--- a/cli/ast/mod.rs
+++ b/cli/ast/mod.rs
@@ -32,7 +32,7 @@ use deno_ast::Diagnostic;
 use deno_ast::LineAndColumnDisplay;
 use deno_ast::MediaType;
 use deno_ast::ParsedSource;
-use deno_core::error::anyhow;
+use deno_core::anyhow::anyhow;
 use deno_core::error::AnyError;
 use deno_core::resolve_url_or_path;
 use deno_core::serde_json;
diff --git a/cli/config_file.rs b/cli/config_file.rs
index 20e254dd0..d61eb2346 100644
--- a/cli/config_file.rs
+++ b/cli/config_file.rs
@@ -2,10 +2,10 @@
 
 use crate::fs_util::canonicalize_path;
 
-use deno_core::error::anyhow;
+use deno_core::anyhow::anyhow;
+use deno_core::anyhow::Context;
 use deno_core::error::custom_error;
 use deno_core::error::AnyError;
-use deno_core::error::Context;
 use deno_core::serde::Deserialize;
 use deno_core::serde::Serialize;
 use deno_core::serde::Serializer;
diff --git a/cli/emit.rs b/cli/emit.rs
index a189b8202..9eac892ff 100644
--- a/cli/emit.rs
+++ b/cli/emit.rs
@@ -16,9 +16,9 @@ use crate::tsc;
 use crate::version;
 
 use deno_ast::swc;
-use deno_core::error::anyhow;
+use deno_core::anyhow::anyhow;
+use deno_core::anyhow::Context;
 use deno_core::error::AnyError;
-use deno_core::error::Context;
 use deno_core::serde::Deserialize;
 use deno_core::serde::Deserializer;
 use deno_core::serde::Serialize;
diff --git a/cli/fs_util.rs b/cli/fs_util.rs
index 21a9a6aad..0602994e3 100644
--- a/cli/fs_util.rs
+++ b/cli/fs_util.rs
@@ -1,7 +1,7 @@
 // Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 
+use deno_core::anyhow::Context;
 use deno_core::error::AnyError;
-use deno_core::error::Context;
 pub use deno_core::normalize_path;
 use deno_core::ModuleSpecifier;
 use deno_runtime::deno_crypto::rand;
diff --git a/cli/lsp/analysis.rs b/cli/lsp/analysis.rs
index 011ffa757..18d675109 100644
--- a/cli/lsp/analysis.rs
+++ b/cli/lsp/analysis.rs
@@ -8,7 +8,7 @@ use crate::tools::lint::create_linter;
 use crate::tools::lint::get_configured_rules;
 
 use deno_ast::SourceTextInfo;
-use deno_core::error::anyhow;
+use deno_core::anyhow::anyhow;
 use deno_core::error::custom_error;
 use deno_core::error::AnyError;
 use deno_core::serde::Deserialize;
diff --git a/cli/lsp/cache.rs b/cli/lsp/cache.rs
index b7bdb90c5..247128420 100644
--- a/cli/lsp/cache.rs
+++ b/cli/lsp/cache.rs
@@ -8,7 +8,7 @@ use crate::proc_state::ProcState;
 use crate::resolver::ImportMapResolver;
 use crate::resolver::JsxResolver;
 
-use deno_core::error::anyhow;
+use deno_core::anyhow::anyhow;
 use deno_core::error::AnyError;
 use deno_core::ModuleSpecifier;
 use deno_runtime::permissions::Permissions;
diff --git a/cli/lsp/config.rs b/cli/lsp/config.rs
index af2caf22a..27efaf497 100644
--- a/cli/lsp/config.rs
+++ b/cli/lsp/config.rs
@@ -1,6 +1,6 @@
 // Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 
-use deno_core::error::anyhow;
+use deno_core::anyhow::anyhow;
 use deno_core::error::AnyError;
 use deno_core::parking_lot::RwLock;
 use deno_core::serde::Deserialize;
diff --git a/cli/lsp/diagnostics.rs b/cli/lsp/diagnostics.rs
index f14d80cd8..f84d22b45 100644
--- a/cli/lsp/diagnostics.rs
+++ b/cli/lsp/diagnostics.rs
@@ -8,7 +8,7 @@ use super::tsc;
 
 use crate::diagnostics;
 
-use deno_core::error::anyhow;
+use deno_core::anyhow::anyhow;
 use deno_core::error::AnyError;
 use deno_core::resolve_url;
 use deno_core::serde_json::json;
diff --git a/cli/lsp/language_server.rs b/cli/lsp/language_server.rs
index 10a69fadb..dbe00861e 100644
--- a/cli/lsp/language_server.rs
+++ b/cli/lsp/language_server.rs
@@ -1,7 +1,7 @@
 // Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 
 use deno_ast::MediaType;
-use deno_core::error::anyhow;
+use deno_core::anyhow::anyhow;
 use deno_core::error::AnyError;
 use deno_core::resolve_url;
 use deno_core::serde_json;
diff --git a/cli/lsp/path_to_regex.rs b/cli/lsp/path_to_regex.rs
index 6e0ed3390..ce935ee27 100644
--- a/cli/lsp/path_to_regex.rs
+++ b/cli/lsp/path_to_regex.rs
@@ -26,7 +26,7 @@
 // THE SOFTWARE.
 //
 
-use deno_core::error::anyhow;
+use deno_core::anyhow::anyhow;
 use deno_core::error::AnyError;
 use fancy_regex::Regex as FancyRegex;
 use regex::Regex;
diff --git a/cli/lsp/registries.rs b/cli/lsp/registries.rs
index bef55150d..c8ab5d586 100644
--- a/cli/lsp/registries.rs
+++ b/cli/lsp/registries.rs
@@ -15,9 +15,9 @@ use crate::file_fetcher::CacheSetting;
 use crate::file_fetcher::FileFetcher;
 use crate::http_cache::HttpCache;
 
-use deno_core::error::anyhow;
+use deno_core::anyhow::anyhow;
+use deno_core::anyhow::Context;
 use deno_core::error::AnyError;
-use deno_core::error::Context;
 use deno_core::resolve_url;
 use deno_core::serde::Deserialize;
 use deno_core::serde_json;
diff --git a/cli/lsp/tsc.rs b/cli/lsp/tsc.rs
index 9350d6f19..b5ce48fab 100644
--- a/cli/lsp/tsc.rs
+++ b/cli/lsp/tsc.rs
@@ -19,7 +19,7 @@ use crate::config_file::TsConfig;
 use crate::tsc;
 use crate::tsc::ResolveArgs;
 
-use deno_core::error::anyhow;
+use deno_core::anyhow::anyhow;
 use deno_core::error::custom_error;
 use deno_core::error::AnyError;
 use deno_core::located_script_name;
diff --git a/cli/ops/runtime_compiler.rs b/cli/ops/runtime_compiler.rs
index b16fbcf69..145da4c1d 100644
--- a/cli/ops/runtime_compiler.rs
+++ b/cli/ops/runtime_compiler.rs
@@ -9,10 +9,10 @@ use crate::proc_state::ProcState;
 use crate::resolver::ImportMapResolver;
 use crate::resolver::JsxResolver;
 
+use deno_core::anyhow::Context;
 use deno_core::error::custom_error;
 use deno_core::error::generic_error;
 use deno_core::error::AnyError;
-use deno_core::error::Context;
 use deno_core::resolve_url_or_path;
 use deno_core::serde_json;
 use deno_core::serde_json::Value;
diff --git a/cli/proc_state.rs b/cli/proc_state.rs
index 7a42b6219..8a3864d39 100644
--- a/cli/proc_state.rs
+++ b/cli/proc_state.rs
@@ -21,10 +21,10 @@ use crate::resolver::JsxResolver;
 use crate::source_maps::SourceMapGetter;
 use crate::version;
 
-use deno_core::error::anyhow;
+use deno_core::anyhow::anyhow;
+use deno_core::anyhow::Context;
 use deno_core::error::custom_error;
 use deno_core::error::AnyError;
-use deno_core::error::Context;
 use deno_core::parking_lot::Mutex;
 use deno_core::resolve_url;
 use deno_core::url::Url;
diff --git a/cli/standalone.rs b/cli/standalone.rs
index e0190920f..92e7dfbae 100644
--- a/cli/standalone.rs
+++ b/cli/standalone.rs
@@ -6,10 +6,10 @@ use crate::flags::Flags;
 use crate::ops;
 use crate::proc_state::ProcState;
 use crate::version;
-use deno_core::error::anyhow;
+use deno_core::anyhow::anyhow;
+use deno_core::anyhow::Context;
 use deno_core::error::type_error;
 use deno_core::error::AnyError;
-use deno_core::error::Context;
 use deno_core::futures::FutureExt;
 use deno_core::located_script_name;
 use deno_core::resolve_url;
diff --git a/cli/tools/lint.rs b/cli/tools/lint.rs
index 4a1f25dd4..ec42adc34 100644
--- a/cli/tools/lint.rs
+++ b/cli/tools/lint.rs
@@ -14,7 +14,10 @@ use crate::fs_util::{collect_files, is_supported_ext};
 use crate::tools::fmt::run_parallelized;
 use crate::{colors, file_watcher};
 use deno_ast::MediaType;
-use deno_core::error::{anyhow, generic_error, AnyError, JsStackFrame};
+use deno_core::anyhow::anyhow;
+use deno_core::error::generic_error;
+use deno_core::error::AnyError;
+use deno_core::error::JsStackFrame;
 use deno_core::serde_json;
 use deno_lint::diagnostic::LintDiagnostic;
 use deno_lint::linter::Linter;
diff --git a/cli/tools/standalone.rs b/cli/tools/standalone.rs
index fb07254aa..5dd6f23ad 100644
--- a/cli/tools/standalone.rs
+++ b/cli/tools/standalone.rs
@@ -4,7 +4,7 @@ use crate::deno_dir::DenoDir;
 use crate::flags::DenoSubcommand;
 use crate::flags::Flags;
 use crate::flags::RunFlags;
-use deno_core::error::bail;
+use deno_core::anyhow::bail;
 use deno_core::error::AnyError;
 use deno_core::serde_json;
 use deno_runtime::deno_fetch::reqwest::Client;
diff --git a/cli/tools/upgrade.rs b/cli/tools/upgrade.rs
index 6de8ba932..5838cb290 100644
--- a/cli/tools/upgrade.rs
+++ b/cli/tools/upgrade.rs
@@ -2,7 +2,7 @@
 
 //! This module provides feature to upgrade deno executable
 
-use deno_core::error::bail;
+use deno_core::anyhow::bail;
 use deno_core::error::AnyError;
 use deno_core::futures::StreamExt;
 use deno_runtime::deno_fetch::reqwest;
diff --git a/cli/tsc.rs b/cli/tsc.rs
index 5f5c09539..184fbd144 100644
--- a/cli/tsc.rs
+++ b/cli/tsc.rs
@@ -5,9 +5,9 @@ use crate::diagnostics::Diagnostics;
 use crate::emit;
 
 use deno_ast::MediaType;
-use deno_core::error::anyhow;
+use deno_core::anyhow::anyhow;
+use deno_core::anyhow::Context;
 use deno_core::error::AnyError;
-use deno_core::error::Context;
 use deno_core::located_script_name;
 use deno_core::op_sync;
 use deno_core::resolve_url_or_path;
diff --git a/core/async_cancel.rs b/core/async_cancel.rs
index e3110bf13..ab7ec2248 100644
--- a/core/async_cancel.rs
+++ b/core/async_cancel.rs
@@ -537,7 +537,7 @@ mod internal {
 #[cfg(test)]
 mod tests {
   use super::*;
-  use crate::error::AnyError;
+  use anyhow::Error;
   use futures::future::pending;
   use futures::future::poll_fn;
   use futures::future::ready;
@@ -652,7 +652,7 @@ mod tests {
       // Cancel a spawned task before it actually runs.
       let cancel_handle = Rc::new(CancelHandle::new());
       let future = spawn(async { panic!("the task should not be spawned") })
-        .map_err(AnyError::from)
+        .map_err(Error::from)
         .try_or_cancel(&cancel_handle);
       cancel_handle.cancel();
       let error = future.await.unwrap_err();
diff --git a/core/bindings.rs b/core/bindings.rs
index 10daee27a..63c7ea4b9 100644
--- a/core/bindings.rs
+++ b/core/bindings.rs
@@ -1,7 +1,6 @@
 // Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 
 use crate::error::is_instance_of_error;
-use crate::error::AnyError;
 use crate::modules::ModuleMap;
 use crate::resolve_url_or_path;
 use crate::JsRuntime;
@@ -12,6 +11,7 @@ use crate::OpResult;
 use crate::OpTable;
 use crate::PromiseId;
 use crate::ZeroCopyBuf;
+use anyhow::Error;
 use log::debug;
 use serde::Deserialize;
 use serde::Serialize;
@@ -322,7 +322,7 @@ fn opcall_sync<'s>(
 
   let op_id = match v8::Local::<v8::Integer>::try_from(args.get(0))
     .map(|l| l.value() as OpId)
-    .map_err(AnyError::from)
+    .map_err(Error::from)
   {
     Ok(op_id) => op_id,
     Err(err) => {
@@ -379,7 +379,7 @@ fn opcall_async<'s>(
 
   let op_id = match v8::Local::<v8::Integer>::try_from(args.get(0))
     .map(|l| l.value() as OpId)
-    .map_err(AnyError::from)
+    .map_err(Error::from)
   {
     Ok(op_id) => op_id,
     Err(err) => {
@@ -392,7 +392,7 @@ fn opcall_async<'s>(
   let arg1 = args.get(1);
   let promise_id = v8::Local::<v8::Integer>::try_from(arg1)
     .map(|l| l.value() as PromiseId)
-    .map_err(AnyError::from);
+    .map_err(Error::from);
   // Fail if promise id invalid (not an int)
   let promise_id: PromiseId = match promise_id {
     Ok(promise_id) => promise_id,
diff --git a/core/error.rs b/core/error.rs
index 793a42603..e8c0305d4 100644
--- a/core/error.rs
+++ b/core/error.rs
@@ -1,23 +1,21 @@
 // Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 
-pub use anyhow::anyhow;
-pub use anyhow::bail;
-pub use anyhow::Context;
+use anyhow::Error;
 use std::borrow::Cow;
-use std::error::Error;
 use std::fmt;
 use std::fmt::Debug;
 use std::fmt::Display;
 use std::fmt::Formatter;
 
 /// A generic wrapper that can encapsulate any concrete error type.
+// TODO(ry) Deprecate AnyError and encourage deno_core::anyhow::Error instead.
 pub type AnyError = anyhow::Error;
 
 /// Creates a new error with a caller-specified error class name and message.
 pub fn custom_error(
   class: &'static str,
   message: impl Into<Cow<'static, str>>,
-) -> AnyError {
+) -> Error {
   CustomError {
     class,
     message: message.into(),
@@ -25,39 +23,39 @@ pub fn custom_error(
   .into()
 }
 
-pub fn generic_error(message: impl Into<Cow<'static, str>>) -> AnyError {
+pub fn generic_error(message: impl Into<Cow<'static, str>>) -> Error {
   custom_error("Error", message)
 }
 
-pub fn type_error(message: impl Into<Cow<'static, str>>) -> AnyError {
+pub fn type_error(message: impl Into<Cow<'static, str>>) -> Error {
   custom_error("TypeError", message)
 }
 
-pub fn range_error(message: impl Into<Cow<'static, str>>) -> AnyError {
+pub fn range_error(message: impl Into<Cow<'static, str>>) -> Error {
   custom_error("RangeError", message)
 }
 
-pub fn invalid_hostname(hostname: &str) -> AnyError {
+pub fn invalid_hostname(hostname: &str) -> Error {
   type_error(format!("Invalid hostname: '{}'", hostname))
 }
 
-pub fn uri_error(message: impl Into<Cow<'static, str>>) -> AnyError {
+pub fn uri_error(message: impl Into<Cow<'static, str>>) -> Error {
   custom_error("URIError", message)
 }
 
-pub fn bad_resource(message: impl Into<Cow<'static, str>>) -> AnyError {
+pub fn bad_resource(message: impl Into<Cow<'static, str>>) -> Error {
   custom_error("BadResource", message)
 }
 
-pub fn bad_resource_id() -> AnyError {
+pub fn bad_resource_id() -> Error {
   custom_error("BadResource", "Bad resource ID")
 }
 
-pub fn not_supported() -> AnyError {
+pub fn not_supported() -> Error {
   custom_error("NotSupported", "The operation is not supported")
 }
 
-pub fn resource_unavailable() -> AnyError {
+pub fn resource_unavailable() -> Error {
   custom_error(
     "Busy",
     "Resource is unavailable because it is in use by a promise",
@@ -66,7 +64,7 @@ pub fn resource_unavailable() -> AnyError {
 
 /// A simple error type that lets the creator specify both the error message and
 /// the error class name. This type is private; externally it only ever appears
-/// wrapped in an `AnyError`. To retrieve the error class name from a wrapped
+/// wrapped in an `anyhow::Error`. To retrieve the error class name from a wrapped
 /// `CustomError`, use the function `get_custom_error_class()`.
 #[derive(Debug)]
 struct CustomError {
@@ -80,11 +78,11 @@ impl Display for CustomError {
   }
 }
 
-impl Error for CustomError {}
+impl std::error::Error for CustomError {}
 
 /// If this error was crated with `custom_error()`, return the specified error
 /// class name. In all other cases this function returns `None`.
-pub fn get_custom_error_class(error: &AnyError) -> Option<&'static str> {
+pub fn get_custom_error_class(error: &Error) -> Option<&'static str> {
   error.downcast_ref::<CustomError>().map(|e| e.class)
 }
 
@@ -168,7 +166,7 @@ struct NativeJsError {
 }
 
 impl JsError {
-  pub(crate) fn create(js_error: Self) -> AnyError {
+  pub(crate) fn create(js_error: Self) -> Error {
     js_error.into()
   }
 
@@ -245,7 +243,7 @@ impl JsError {
   }
 }
 
-impl Error for JsError {}
+impl std::error::Error for JsError {}
 
 fn format_source_loc(
   file_name: &str,
@@ -283,9 +281,9 @@ impl Display for JsError {
 
 pub(crate) fn attach_handle_to_error(
   scope: &mut v8::Isolate,
-  err: AnyError,
+  err: Error,
   handle: v8::Local<v8::Value>,
-) -> AnyError {
+) -> Error {
   ErrWithV8Handle::new(scope, err, handle).into()
 }
 
@@ -323,14 +321,14 @@ pub(crate) fn is_instance_of_error<'s>(
 // TODO(piscisaureus): rusty_v8 should implement the Error trait on
 // values of type v8::Global<T>.
 pub(crate) struct ErrWithV8Handle {
-  err: AnyError,
+  err: Error,
   handle: v8::Global<v8::Value>,
 }
 
 impl ErrWithV8Handle {
   pub fn new(
     scope: &mut v8::Isolate,
-    err: AnyError,
+    err: Error,
     handle: v8::Local<v8::Value>,
   ) -> Self {
     let handle = v8::Global::new(scope, handle);
@@ -348,11 +346,11 @@ impl ErrWithV8Handle {
 unsafe impl Send for ErrWithV8Handle {}
 unsafe impl Sync for ErrWithV8Handle {}
 
-impl Error for ErrWithV8Handle {}
+impl std::error::Error for ErrWithV8Handle {}
 
 impl Display for ErrWithV8Handle {
   fn fmt(&self, f: &mut Formatter) -> fmt::Result {
-    <AnyError as Display>::fmt(&self.err, f)
+    <Error as Display>::fmt(&self.err, f)
   }
 }
 
diff --git a/core/error_codes.rs b/core/error_codes.rs
index fc613426f..43a6c4391 100644
--- a/core/error_codes.rs
+++ b/core/error_codes.rs
@@ -1,6 +1,6 @@
-use crate::error::AnyError;
+use anyhow::Error;
 
-pub(crate) fn get_error_code(err: &AnyError) -> Option<&'static str> {
+pub(crate) fn get_error_code(err: &Error) -> Option<&'static str> {
   err
     .downcast_ref::<std::io::Error>()
     .map(|e| match e.raw_os_error() {
diff --git a/core/examples/http_bench_json_ops.rs b/core/examples/http_bench_json_ops.rs
index 6f14f558c..641483b0b 100644
--- a/core/examples/http_bench_json_ops.rs
+++ b/core/examples/http_bench_json_ops.rs
@@ -1,5 +1,5 @@
 // Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
-use deno_core::error::AnyError;
+use deno_core::anyhow::Error;
 use deno_core::AsyncRefCell;
 use deno_core::AsyncResult;
 use deno_core::CancelHandle;
@@ -12,7 +12,6 @@ use deno_core::ResourceId;
 use deno_core::ZeroCopyBuf;
 use std::cell::RefCell;
 use std::env;
-use std::io::Error;
 use std::net::SocketAddr;
 use std::rc::Rc;
 use tokio::io::AsyncReadExt;
@@ -43,7 +42,7 @@ struct TcpListener {
 }
 
 impl TcpListener {
-  async fn accept(self: Rc<Self>) -> Result<TcpStream, Error> {
+  async fn accept(self: Rc<Self>) -> Result<TcpStream, std::io::Error> {
     let cancel = RcRef::map(&self, |r| &r.cancel);
     let stream = self.inner.accept().try_or_cancel(cancel).await?.0.into();
     Ok(stream)
@@ -57,7 +56,7 @@ impl Resource for TcpListener {
 }
 
 impl TryFrom<std::net::TcpListener> for TcpListener {
-  type Error = Error;
+  type Error = std::io::Error;
   fn try_from(
     std_listener: std::net::TcpListener,
   ) -> Result<Self, Self::Error> {
@@ -78,21 +77,18 @@ struct TcpStream {
 }
 
 impl TcpStream {
-  async fn read(
-    self: Rc<Self>,
-    mut buf: ZeroCopyBuf,
-  ) -> Result<usize, AnyError> {
+  async fn read(self: Rc<Self>, mut buf: ZeroCopyBuf) -> Result<usize, Error> {
     let mut rd = RcRef::map(&self, |r| &r.rd).borrow_mut().await;
     let cancel = RcRef::map(self, |r| &r.cancel);
     rd.read(&mut buf)
       .try_or_cancel(cancel)
       .await
-      .map_err(AnyError::from)
+      .map_err(Error::from)
   }
 
-  async fn write(self: Rc<Self>, buf: ZeroCopyBuf) -> Result<usize, AnyError> {
+  async fn write(self: Rc<Self>, buf: ZeroCopyBuf) -> Result<usize, Error> {
     let mut wr = RcRef::map(self, |r| &r.wr).borrow_mut().await;
-    wr.write(&buf).await.map_err(AnyError::from)
+    wr.write(&buf).await.map_err(Error::from)
   }
 }
 
@@ -129,11 +125,7 @@ fn create_js_runtime() -> JsRuntime {
   runtime
 }
 
-fn op_listen(
-  state: &mut OpState,
-  _: (),
-  _: (),
-) -> Result<ResourceId, AnyError> {
+fn op_listen(state: &mut OpState, _: (), _: ()) -> Result<ResourceId, Error> {
   log::debug!("listen");
   let addr = "127.0.0.1:4544".parse::<SocketAddr>().unwrap();
   let std_listener = std::net::TcpListener::bind(&addr)?;
@@ -147,7 +139,7 @@ async fn op_accept(
   state: Rc<RefCell<OpState>>,
   rid: ResourceId,
   _: (),
-) -> Result<ResourceId, AnyError> {
+) -> Result<ResourceId, Error> {
   log::debug!("accept rid={}", rid);
 
   let listener = state.borrow().resource_table.get::<TcpListener>(rid)?;
diff --git a/core/extensions.rs b/core/extensions.rs
index 54d648071..587a2d061 100644
--- a/core/extensions.rs
+++ b/core/extensions.rs
@@ -1,11 +1,12 @@
-use crate::error::AnyError;
-use crate::{OpFn, OpState};
+use crate::OpFn;
+use crate::OpState;
+use anyhow::Error;
 
 pub type SourcePair = (&'static str, Box<SourceLoadFn>);
-pub type SourceLoadFn = dyn Fn() -> Result<String, AnyError>;
+pub type SourceLoadFn = dyn Fn() -> Result<String, Error>;
 pub type OpPair = (&'static str, Box<OpFn>);
 pub type OpMiddlewareFn = dyn Fn(&'static str, Box<OpFn>) -> Box<OpFn>;
-pub type OpStateFn = dyn Fn(&mut OpState) -> Result<(), AnyError>;
+pub type OpStateFn = dyn Fn(&mut OpState) -> Result<(), Error>;
 
 #[derive(Default)]
 pub struct Extension {
@@ -44,7 +45,7 @@ impl Extension {
   }
 
   /// Allows setting up the initial op-state of an isolate at startup.
-  pub fn init_state(&self, state: &mut OpState) -> Result<(), AnyError> {
+  pub fn init_state(&self, state: &mut OpState) -> Result<(), Error> {
     match &self.opstate_fn {
       Some(ofn) => ofn(state),
       None => Ok(()),
@@ -79,7 +80,7 @@ impl ExtensionBuilder {
 
   pub fn state<F>(&mut self, opstate_fn: F) -> &mut Self
   where
-    F: Fn(&mut OpState) -> Result<(), AnyError> + 'static,
+    F: Fn(&mut OpState) -> Result<(), Error> + 'static,
   {
     self.state = Some(Box::new(opstate_fn));
     self
diff --git a/core/inspector.rs b/core/inspector.rs
index 3e84bcd58..8a686dc63 100644
--- a/core/inspector.rs
+++ b/core/inspector.rs
@@ -5,7 +5,6 @@
 //! <https://hyperandroid.com/2020/02/12/v8-inspector-from-an-embedder-standpoint/>
 
 use crate::error::generic_error;
-use crate::error::AnyError;
 use crate::futures::channel::mpsc;
 use crate::futures::channel::mpsc::UnboundedReceiver;
 use crate::futures::channel::mpsc::UnboundedSender;
@@ -22,6 +21,7 @@ use crate::futures::task::Poll;
 use crate::serde_json;
 use crate::serde_json::json;
 use crate::serde_json::Value;
+use anyhow::Error;
 use parking_lot::Mutex;
 use std::cell::BorrowMutError;
 use std::cell::RefCell;
@@ -637,7 +637,7 @@ impl LocalInspectorSession {
     &mut self,
     method: &str,
     params: Option<serde_json::Value>,
-  ) -> Result<serde_json::Value, AnyError> {
+  ) -> Result<serde_json::Value, Error> {
     let id = self.next_message_id;
     self.next_message_id += 1;
 
diff --git a/core/lib.rs b/core/lib.rs
index ceb2b89af..87994720f 100644
--- a/core/lib.rs
+++ b/core/lib.rs
@@ -19,6 +19,7 @@ mod resources;
 mod runtime;
 
 // Re-exports
+pub use anyhow;
 pub use futures;
 pub use parking_lot;
 pub use serde;
diff --git a/core/modules.rs b/core/modules.rs
index dc2e5bb32..bc3885a7b 100644
--- a/core/modules.rs
+++ b/core/modules.rs
@@ -2,10 +2,10 @@
 
 use crate::bindings;
 use crate::error::generic_error;
-use crate::error::AnyError;
 use crate::module_specifier::ModuleSpecifier;
 use crate::runtime::exception_to_err_result;
 use crate::OpState;
+use anyhow::Error;
 use futures::future::FutureExt;
 use futures::stream::FuturesUnordered;
 use futures::stream::Stream;
@@ -54,9 +54,8 @@ pub struct ModuleSource {
 }
 
 pub type PrepareLoadFuture =
-  dyn Future<Output = (ModuleLoadId, Result<RecursiveModuleLoad, AnyError>)>;
-pub type ModuleSourceFuture =
-  dyn Future<Output = Result<ModuleSource, AnyError>>;
+  dyn Future<Output = (ModuleLoadId, Result<RecursiveModuleLoad, Error>)>;
+pub type ModuleSourceFuture = dyn Future<Output = Result<ModuleSource, Error>>;
 
 pub trait ModuleLoader {
   /// Returns an absolute URL.
@@ -71,7 +70,7 @@ pub trait ModuleLoader {
     specifier: &str,
     referrer: &str,
     _is_main: bool,
-  ) -> Result<ModuleSpecifier, AnyError>;
+  ) -> Result<ModuleSpecifier, Error>;
 
   /// Given ModuleSpecifier, load its source code.
   ///
@@ -99,7 +98,7 @@ pub trait ModuleLoader {
     _module_specifier: &ModuleSpecifier,
     _maybe_referrer: Option<String>,
     _is_dyn_import: bool,
-  ) -> Pin<Box<dyn Future<Output = Result<(), AnyError>>>> {
+  ) -> Pin<Box<dyn Future<Output = Result<(), Error>>>> {
     async { Ok(()) }.boxed_local()
   }
 }
@@ -114,7 +113,7 @@ impl ModuleLoader for NoopModuleLoader {
     _specifier: &str,
     _referrer: &str,
     _is_main: bool,
-  ) -> Result<ModuleSpecifier, AnyError> {
+  ) -> Result<ModuleSpecifier, Error> {
     Err(generic_error("Module loading is not supported"))
   }
 
@@ -142,7 +141,7 @@ impl ModuleLoader for FsModuleLoader {
     specifier: &str,
     referrer: &str,
     _is_main: bool,
-  ) -> Result<ModuleSpecifier, AnyError> {
+  ) -> Result<ModuleSpecifier, Error> {
     Ok(crate::resolve_import(specifier, referrer)?)
   }
 
@@ -257,7 +256,7 @@ impl RecursiveModuleLoad {
     load
   }
 
-  pub fn resolve_root(&self) -> Result<ModuleSpecifier, AnyError> {
+  pub fn resolve_root(&self) -> Result<ModuleSpecifier, Error> {
     match self.init {
       LoadInit::Main(ref specifier) => {
         self.loader.resolve(specifier, ".", true)
@@ -271,7 +270,7 @@ impl RecursiveModuleLoad {
     }
   }
 
-  pub async fn prepare(&self) -> Result<(), AnyError> {
+  pub async fn prepare(&self) -> Result<(), Error> {
     let op_state = self.op_state.clone();
     let (module_specifier, maybe_referrer) = match self.init {
       LoadInit::Main(ref specifier) => {
@@ -310,7 +309,7 @@ impl RecursiveModuleLoad {
     &mut self,
     scope: &mut v8::HandleScope,
     module_source: &ModuleSource,
-  ) -> Result<(), AnyError> {
+  ) -> Result<(), Error> {
     // Register the module in the module map unless it's already there. If the
     // specified URL and the "true" URL are different, register the alias.
     if module_source.module_url_specified != module_source.module_url_found {
@@ -392,7 +391,7 @@ impl RecursiveModuleLoad {
 }
 
 impl Stream for RecursiveModuleLoad {
-  type Item = Result<ModuleSource, AnyError>;
+  type Item = Result<ModuleSource, Error>;
 
   fn poll_next(
     self: Pin<&mut Self>,
@@ -529,7 +528,7 @@ impl ModuleMap {
     main: bool,
     name: &str,
     source: &str,
-  ) -> Result<ModuleId, AnyError> {
+  ) -> Result<ModuleId, Error> {
     let name_str = v8::String::new(scope, name).unwrap();
     let source_str = v8::String::new(scope, source).unwrap();
 
@@ -637,7 +636,7 @@ impl ModuleMap {
   pub async fn load_main(
     module_map_rc: Rc<RefCell<ModuleMap>>,
     specifier: &str,
-  ) -> Result<RecursiveModuleLoad, AnyError> {
+  ) -> Result<RecursiveModuleLoad, Error> {
     let load = RecursiveModuleLoad::main(specifier, module_map_rc.clone());
     load.prepare().await?;
     Ok(load)
@@ -646,7 +645,7 @@ impl ModuleMap {
   pub async fn load_side(
     module_map_rc: Rc<RefCell<ModuleMap>>,
     specifier: &str,
-  ) -> Result<RecursiveModuleLoad, AnyError> {
+  ) -> Result<RecursiveModuleLoad, Error> {
     let load = RecursiveModuleLoad::side(specifier, module_map_rc.clone());
     load.prepare().await?;
     Ok(load)
@@ -727,7 +726,6 @@ mod tests {
   use crate::RuntimeOptions;
   use futures::future::FutureExt;
   use parking_lot::Mutex;
-  use std::error::Error;
   use std::fmt;
   use std::future::Future;
   use std::io;
@@ -791,8 +789,8 @@ mod tests {
     }
   }
 
-  impl Error for MockError {
-    fn cause(&self) -> Option<&dyn Error> {
+  impl std::error::Error for MockError {
+    fn cause(&self) -> Option<&dyn std::error::Error> {
       unimplemented!()
     }
   }
@@ -803,7 +801,7 @@ mod tests {
   }
 
   impl Future for DelayedSourceCodeFuture {
-    type Output = Result<ModuleSource, AnyError>;
+    type Output = Result<ModuleSource, Error>;
 
     fn poll(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
       let inner = self.get_mut();
@@ -834,7 +832,7 @@ mod tests {
       specifier: &str,
       referrer: &str,
       _is_root: bool,
-    ) -> Result<ModuleSpecifier, AnyError> {
+    ) -> Result<ModuleSpecifier, Error> {
       let referrer = if referrer == "." {
         "file:///"
       } else {
@@ -978,7 +976,7 @@ mod tests {
         specifier: &str,
         referrer: &str,
         _is_main: bool,
-      ) -> Result<ModuleSpecifier, AnyError> {
+      ) -> Result<ModuleSpecifier, Error> {
         self.count.fetch_add(1, Ordering::Relaxed);
         assert_eq!(specifier, "./b.js");
         assert_eq!(referrer, "file:///a.js");
@@ -1096,7 +1094,7 @@ mod tests {
         specifier: &str,
         referrer: &str,
         _is_main: bool,
-      ) -> Result<ModuleSpecifier, AnyError> {
+      ) -> Result<ModuleSpecifier, Error> {
         self.count.fetch_add(1, Ordering::Relaxed);
         assert_eq!(specifier, "/foo.js");
         assert_eq!(referrer, "file:///dyn_import2.js");
@@ -1156,7 +1154,7 @@ mod tests {
       specifier: &str,
       referrer: &str,
       _is_main: bool,
-    ) -> Result<ModuleSpecifier, AnyError> {
+    ) -> Result<ModuleSpecifier, Error> {
       let c = self.resolve_count.fetch_add(1, Ordering::Relaxed);
       assert!(c < 7);
       assert_eq!(specifier, "./b.js");
@@ -1187,7 +1185,7 @@ mod tests {
       _module_specifier: &ModuleSpecifier,
       _maybe_referrer: Option<String>,
       _is_dyn_import: bool,
-    ) -> Pin<Box<dyn Future<Output = Result<(), AnyError>>>> {
+    ) -> Pin<Box<dyn Future<Output = Result<(), Error>>>> {
       self.prepare_load_count.fetch_add(1, Ordering::Relaxed);
       async { Ok(()) }.boxed_local()
     }
@@ -1292,7 +1290,7 @@ mod tests {
         specifier: &str,
         referrer: &str,
         _is_main: bool,
-      ) -> Result<ModuleSpecifier, AnyError> {
+      ) -> Result<ModuleSpecifier, Error> {
         self.resolve_count.fetch_add(1, Ordering::Relaxed);
         let s = crate::resolve_import(specifier, referrer).unwrap();
         Ok(s)
@@ -1634,7 +1632,7 @@ mod tests {
         specifier: &str,
         referrer: &str,
         _is_main: bool,
-      ) -> Result<ModuleSpecifier, AnyError> {
+      ) -> Result<ModuleSpecifier, Error> {
         let s = crate::resolve_import(specifier, referrer).unwrap();
         Ok(s)
       }
diff --git a/core/ops.rs b/core/ops.rs
index f62fe7a8e..13f001146 100644
--- a/core/ops.rs
+++ b/core/ops.rs
@@ -1,11 +1,11 @@
 // Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 
 use crate::error::type_error;
-use crate::error::AnyError;
 use crate::gotham_state::GothamState;
 use crate::ops_metrics::OpsTracker;
 use crate::resources::ResourceTable;
 use crate::runtime::GetErrorClassFn;
+use anyhow::Error;
 use futures::future::maybe_done;
 use futures::future::FusedFuture;
 use futures::future::MaybeDone;
@@ -96,13 +96,13 @@ pub struct OpPayload<'a, 'b, 'c> {
 impl<'a, 'b, 'c> OpPayload<'a, 'b, 'c> {
   pub fn deserialize<T: DeserializeOwned, U: DeserializeOwned>(
     self,
-  ) -> Result<(T, U), AnyError> {
+  ) -> Result<(T, U), Error> {
     let a: T = serde_v8::from_v8(self.scope, self.a)
-      .map_err(AnyError::from)
+      .map_err(Error::from)
       .map_err(|e| type_error(format!("Error parsing args: {}", e)))?;
 
     let b: U = serde_v8::from_v8(self.scope, self.b)
-      .map_err(AnyError::from)
+      .map_err(Error::from)
       .map_err(|e| type_error(format!("Error parsing args: {}", e)))?;
     Ok((a, b))
   }
@@ -144,7 +144,7 @@ pub struct OpError {
 }
 
 pub fn serialize_op_result<R: Serialize + 'static>(
-  result: Result<R, AnyError>,
+  result: Result<R, Error>,
   state: Rc<RefCell<OpState>>,
 ) -> OpResult {
   match result {
diff --git a/core/ops_builtin.rs b/core/ops_builtin.rs
index a6cf82fe9..d759bc5ba 100644
--- a/core/ops_builtin.rs
+++ b/core/ops_builtin.rs
@@ -1,5 +1,4 @@
 use crate::error::type_error;
-use crate::error::AnyError;
 use crate::include_js_files;
 use crate::op_async;
 use crate::op_sync;
@@ -11,6 +10,7 @@ use crate::Extension;
 use crate::OpState;
 use crate::Resource;
 use crate::ZeroCopyBuf;
+use anyhow::Error;
 use std::cell::RefCell;
 use std::io::{stderr, stdout, Write};
 use std::rc::Rc;
@@ -51,7 +51,7 @@ pub fn op_resources(
   state: &mut OpState,
   _: (),
   _: (),
-) -> Result<Vec<(ResourceId, String)>, AnyError> {
+) -> Result<Vec<(ResourceId, String)>, Error> {
   let serialized_resources = state
     .resource_table
     .names()
@@ -65,7 +65,7 @@ pub fn op_close(
   state: &mut OpState,
   rid: Option<ResourceId>,
   _: (),
-) -> Result<(), AnyError> {
+) -> Result<(), Error> {
   // TODO(@AaronO): drop Option after improving type-strictness balance in
   // serde_v8
   let rid = rid.ok_or_else(|| type_error("missing or invalid `rid`"))?;
@@ -79,7 +79,7 @@ pub fn op_try_close(
   state: &mut OpState,
   rid: Option<ResourceId>,
   _: (),
-) -> Result<(), AnyError> {
+) -> Result<(), Error> {
   // TODO(@AaronO): drop Option after improving type-strictness balance in
   // serde_v8.
   let rid = rid.ok_or_else(|| type_error("missing or invalid `rid`"))?;
@@ -92,7 +92,7 @@ pub fn op_print(
   _state: &mut OpState,
   msg: String,
   is_err: bool,
-) -> Result<(), AnyError> {
+) -> Result<(), Error> {
   if is_err {
     stderr().write_all(msg.as_bytes())?;
     stderr().flush().unwrap();
@@ -123,7 +123,7 @@ pub fn op_wasm_streaming_feed(
   state: &mut OpState,
   rid: ResourceId,
   bytes: ZeroCopyBuf,
-) -> Result<(), AnyError> {
+) -> Result<(), Error> {
   let wasm_streaming =
     state.resource_table.get::<WasmStreamingResource>(rid)?;
 
@@ -137,7 +137,7 @@ pub fn op_wasm_streaming_abort(
   state: &mut OpState,
   rid: ResourceId,
   exception: serde_v8::Value,
-) -> Result<(), AnyError> {
+) -> Result<(), Error> {
   let wasm_streaming =
     state.resource_table.take::<WasmStreamingResource>(rid)?;
 
@@ -157,7 +157,7 @@ pub fn op_wasm_streaming_set_url(
   state: &mut OpState,
   rid: ResourceId,
   url: String,
-) -> Result<(), AnyError> {
+) -> Result<(), Error> {
   let wasm_streaming =
     state.resource_table.get::<WasmStreamingResource>(rid)?;
 
@@ -170,7 +170,7 @@ pub fn op_metrics(
   state: &mut OpState,
   _: (),
   _: (),
-) -> Result<(OpMetrics, Vec<OpMetrics>), AnyError> {
+) -> Result<(OpMetrics, Vec<OpMetrics>), Error> {
   let aggregate = state.tracker.aggregate();
   let per_op = state.tracker.per_op();
   Ok((aggregate, per_op))
@@ -180,7 +180,7 @@ async fn op_read(
   state: Rc<RefCell<OpState>>,
   rid: ResourceId,
   buf: ZeroCopyBuf,
-) -> Result<u32, AnyError> {
+) -> Result<u32, Error> {
   let resource = state.borrow().resource_table.get_any(rid)?;
   resource.read(buf).await.map(|n| n as u32)
 }
@@ -189,7 +189,7 @@ async fn op_write(
   state: Rc<RefCell<OpState>>,
   rid: ResourceId,
   buf: ZeroCopyBuf,
-) -> Result<u32, AnyError> {
+) -> Result<u32, Error> {
   let resource = state.borrow().resource_table.get_any(rid)?;
   resource.write(buf).await.map(|n| n as u32)
 }
@@ -198,7 +198,7 @@ async fn op_shutdown(
   state: Rc<RefCell<OpState>>,
   rid: ResourceId,
   _: (),
-) -> Result<(), AnyError> {
+) -> Result<(), Error> {
   let resource = state.borrow().resource_table.get_any(rid)?;
   resource.shutdown().await
 }
diff --git a/core/ops_json.rs b/core/ops_json.rs
index a2eff40ef..b3153763e 100644
--- a/core/ops_json.rs
+++ b/core/ops_json.rs
@@ -1,11 +1,11 @@
 // Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 
-use crate::error::AnyError;
 use crate::ops::OpCall;
 use crate::serialize_op_result;
 use crate::Op;
 use crate::OpFn;
 use crate::OpState;
+use anyhow::Error;
 use serde::de::DeserializeOwned;
 use serde::Serialize;
 use std::cell::RefCell;
@@ -51,7 +51,7 @@ pub fn void_op_async() -> Box<OpFn> {
 /// A more complete example is available in the examples directory.
 pub fn op_sync<F, A, B, R>(op_fn: F) -> Box<OpFn>
 where
-  F: Fn(&mut OpState, A, B) -> Result<R, AnyError> + 'static,
+  F: Fn(&mut OpState, A, B) -> Result<R, Error> + 'static,
   A: DeserializeOwned,
   B: DeserializeOwned,
   R: Serialize + 'static,
@@ -96,7 +96,7 @@ where
   F: Fn(Rc<RefCell<OpState>>, A, B) -> R + 'static,
   A: DeserializeOwned,
   B: DeserializeOwned,
-  R: Future<Output = Result<RV, AnyError>> + 'static,
+  R: Future<Output = Result<RV, Error>> + 'static,
   RV: Serialize + 'static,
 {
   Box::new(move |state, payload| -> Op {
@@ -106,7 +106,7 @@ where
     let args = match payload.deserialize() {
       Ok(args) => args,
       Err(err) => {
-        return Op::Sync(serialize_op_result(Err::<(), AnyError>(err), state))
+        return Op::Sync(serialize_op_result(Err::<(), Error>(err), state))
       }
     };
     let (a, b) = args;
@@ -128,7 +128,7 @@ where
   F: Fn(Rc<RefCell<OpState>>, A, B) -> R + 'static,
   A: DeserializeOwned,
   B: DeserializeOwned,
-  R: Future<Output = Result<RV, AnyError>> + 'static,
+  R: Future<Output = Result<RV, Error>> + 'static,
   RV: Serialize + 'static,
 {
   Box::new(move |state, payload| -> Op {
@@ -138,7 +138,7 @@ where
     let args = match payload.deserialize() {
       Ok(args) => args,
       Err(err) => {
-        return Op::Sync(serialize_op_result(Err::<(), AnyError>(err), state))
+        return Op::Sync(serialize_op_result(Err::<(), Error>(err), state))
       }
     };
     let (a, b) = args;
@@ -162,7 +162,7 @@ mod tests {
       _state: Rc<RefCell<OpState>>,
       msg: Option<String>,
       _: (),
-    ) -> Result<(), AnyError> {
+    ) -> Result<(), Error> {
       assert_eq!(msg.unwrap(), "hello");
       Err(crate::error::generic_error("foo"))
     }
diff --git a/core/resources.rs b/core/resources.rs
index 33cabcad4..e1b923fd0 100644
--- a/core/resources.rs
+++ b/core/resources.rs
@@ -8,8 +8,8 @@
 
 use crate::error::bad_resource_id;
 use crate::error::not_supported;
-use crate::error::AnyError;
 use crate::ZeroCopyBuf;
+use anyhow::Error;
 use futures::Future;
 use std::any::type_name;
 use std::any::Any;
@@ -21,7 +21,7 @@ use std::pin::Pin;
 use std::rc::Rc;
 
 /// Returned by resource read/write/shutdown methods
-pub type AsyncResult<T> = Pin<Box<dyn Future<Output = Result<T, AnyError>>>>;
+pub type AsyncResult<T> = Pin<Box<dyn Future<Output = Result<T, Error>>>>;
 
 /// All objects that can be store in the resource table should implement the
 /// `Resource` trait.
@@ -130,7 +130,7 @@ impl ResourceTable {
   /// Returns a reference counted pointer to the resource of type `T` with the
   /// given `rid`. If `rid` is not present or has a type different than `T`,
   /// this function returns `None`.
-  pub fn get<T: Resource>(&self, rid: ResourceId) -> Result<Rc<T>, AnyError> {
+  pub fn get<T: Resource>(&self, rid: ResourceId) -> Result<Rc<T>, Error> {
     self
       .index
       .get(&rid)
@@ -139,7 +139,7 @@ impl ResourceTable {
       .ok_or_else(bad_resource_id)
   }
 
-  pub fn get_any(&self, rid: ResourceId) -> Result<Rc<dyn Resource>, AnyError> {
+  pub fn get_any(&self, rid: ResourceId) -> Result<Rc<dyn Resource>, Error> {
     self
       .index
       .get(&rid)
@@ -151,10 +151,7 @@ impl ResourceTable {
   /// If a resource with the given `rid` exists but its type does not match `T`,
   /// it is not removed from the resource table. Note that the resource's
   /// `close()` method is *not* called.
-  pub fn take<T: Resource>(
-    &mut self,
-    rid: ResourceId,
-  ) -> Result<Rc<T>, AnyError> {
+  pub fn take<T: Resource>(&mut self, rid: ResourceId) -> Result<Rc<T>, Error> {
     let resource = self.get::<T>(rid)?;
     self.index.remove(&rid);
     Ok(resource)
@@ -165,7 +162,7 @@ impl ResourceTable {
   pub fn take_any(
     &mut self,
     rid: ResourceId,
-  ) -> Result<Rc<dyn Resource>, AnyError> {
+  ) -> Result<Rc<dyn Resource>, Error> {
     self.index.remove(&rid).ok_or_else(bad_resource_id)
   }
 
@@ -175,7 +172,7 @@ impl ResourceTable {
   /// counted, therefore pending ops are not automatically cancelled. A resource
   /// may implement the `close()` method to perform clean-ups such as canceling
   /// ops.
-  pub fn close(&mut self, rid: ResourceId) -> Result<(), AnyError> {
+  pub fn close(&mut self, rid: ResourceId) -> Result<(), Error> {
     self
       .index
       .remove(&rid)
diff --git a/core/runtime.rs b/core/runtime.rs
index 704be7a76..c7831f88f 100644
--- a/core/runtime.rs
+++ b/core/runtime.rs
@@ -3,7 +3,6 @@
 use crate::bindings;
 use crate::error::attach_handle_to_error;
 use crate::error::generic_error;
-use crate::error::AnyError;
 use crate::error::ErrWithV8Handle;
 use crate::error::JsError;
 use crate::inspector::JsRuntimeInspector;
@@ -20,6 +19,7 @@ use crate::OpPayload;
 use crate::OpResult;
 use crate::OpState;
 use crate::PromiseId;
+use anyhow::Error;
 use futures::channel::oneshot;
 use futures::future::poll_fn;
 use futures::future::FutureExt;
@@ -47,10 +47,9 @@ pub enum Snapshot {
   Boxed(Box<[u8]>),
 }
 
-pub type JsErrorCreateFn = dyn Fn(JsError) -> AnyError;
+pub type JsErrorCreateFn = dyn Fn(JsError) -> Error;
 
-pub type GetErrorClassFn =
-  &'static dyn for<'e> Fn(&'e AnyError) -> &'static str;
+pub type GetErrorClassFn = &'static dyn for<'e> Fn(&'e Error) -> &'static str;
 
 /// Objects that need to live as long as the isolate
 #[derive(Default)]
@@ -91,7 +90,7 @@ struct DynImportModEvaluate {
 
 struct ModEvaluate {
   promise: v8::Global<v8::Promise>,
-  sender: oneshot::Sender<Result<(), AnyError>>,
+  sender: oneshot::Sender<Result<(), Error>>,
 }
 
 pub struct CrossIsolateStore<T>(Arc<Mutex<CrossIsolateStoreInner<T>>>);
@@ -450,7 +449,7 @@ impl JsRuntime {
   }
 
   /// Initializes JS of provided Extensions
-  fn init_extension_js(&mut self) -> Result<(), AnyError> {
+  fn init_extension_js(&mut self) -> Result<(), Error> {
     // Take extensions to avoid double-borrow
     let mut extensions: Vec<Extension> = std::mem::take(&mut self.extensions);
     for m in extensions.iter_mut() {
@@ -468,7 +467,7 @@ impl JsRuntime {
   }
 
   /// Initializes ops of provided Extensions
-  fn init_extension_ops(&mut self) -> Result<(), AnyError> {
+  fn init_extension_ops(&mut self) -> Result<(), Error> {
     let op_state = self.op_state();
     // Take extensions to avoid double-borrow
     let mut extensions: Vec<Extension> = std::mem::take(&mut self.extensions);
@@ -552,14 +551,14 @@ impl JsRuntime {
   ///
   /// The same `name` value can be used for multiple executions.
   ///
-  /// `AnyError` can be downcast to a type that exposes additional information
+  /// `Error` can be downcast to a type that exposes additional information
   /// about the V8 exception. By default this type is `JsError`, however it may
   /// be a different type if `RuntimeOptions::js_error_create_fn` has been set.
   pub fn execute_script(
     &mut self,
     name: &str,
     source_code: &str,
-  ) -> Result<v8::Global<v8::Value>, AnyError> {
+  ) -> Result<v8::Global<v8::Value>, Error> {
     let scope = &mut self.handle_scope();
 
     let source = v8::String::new(scope, source_code).unwrap();
@@ -592,7 +591,7 @@ impl JsRuntime {
   /// Takes a snapshot. The isolate should have been created with will_snapshot
   /// set to true.
   ///
-  /// `AnyError` can be downcast to a type that exposes additional information
+  /// `Error` can be downcast to a type that exposes additional information
   /// about the V8 exception. By default this type is `JsError`, however it may
   /// be a different type if `RuntimeOptions::js_error_create_fn` has been set.
   pub fn snapshot(&mut self) -> v8::StartupData {
@@ -702,7 +701,7 @@ impl JsRuntime {
   pub async fn resolve_value(
     &mut self,
     global: v8::Global<v8::Value>,
-  ) -> Result<v8::Global<v8::Value>, AnyError> {
+  ) -> Result<v8::Global<v8::Value>, Error> {
     poll_fn(|cx| {
       let state = self.poll_event_loop(cx, false);
 
@@ -746,7 +745,7 @@ impl JsRuntime {
   pub async fn run_event_loop(
     &mut self,
     wait_for_inspector: bool,
-  ) -> Result<(), AnyError> {
+  ) -> Result<(), Error> {
     poll_fn(|cx| self.poll_event_loop(cx, wait_for_inspector)).await
   }
 
@@ -758,7 +757,7 @@ impl JsRuntime {
     &mut self,
     cx: &mut Context,
     wait_for_inspector: bool,
-  ) -> Poll<Result<(), AnyError>> {
+  ) -> Poll<Result<(), Error>> {
     // We always poll the inspector first
     let _ = self.inspector().poll_unpin(cx);
 
@@ -902,7 +901,7 @@ pub(crate) fn exception_to_err_result<'s, T>(
   scope: &mut v8::HandleScope<'s>,
   exception: v8::Local<v8::Value>,
   in_promise: bool,
-) -> Result<T, AnyError> {
+) -> Result<T, Error> {
   let is_terminating_exception = scope.is_execution_terminating();
   let mut exception = exception;
 
@@ -943,7 +942,7 @@ impl JsRuntime {
   pub(crate) fn instantiate_module(
     &mut self,
     id: ModuleId,
-  ) -> Result<(), AnyError> {
+  ) -> Result<(), Error> {
     let module_map_rc = Self::module_map(self.v8_isolate());
     let scope = &mut self.handle_scope();
     let tc_scope = &mut v8::TryCatch::new(scope);
@@ -981,7 +980,7 @@ impl JsRuntime {
     &mut self,
     load_id: ModuleLoadId,
     id: ModuleId,
-  ) -> Result<(), AnyError> {
+  ) -> Result<(), Error> {
     let state_rc = Self::state(self.v8_isolate());
     let module_map_rc = Self::module_map(self.v8_isolate());
 
@@ -1058,7 +1057,7 @@ impl JsRuntime {
   /// Implementors must manually call `run_event_loop()` to drive module
   /// evaluation future.
   ///
-  /// `AnyError` can be downcast to a type that exposes additional information
+  /// `Error` can be downcast to a type that exposes additional information
   /// about the V8 exception. By default this type is `JsError`, however it may
   /// be a different type if `RuntimeOptions::js_error_create_fn` has been set.
   ///
@@ -1066,7 +1065,7 @@ impl JsRuntime {
   pub fn mod_evaluate(
     &mut self,
     id: ModuleId,
-  ) -> oneshot::Receiver<Result<(), AnyError>> {
+  ) -> oneshot::Receiver<Result<(), Error>> {
     let state_rc = Self::state(self.v8_isolate());
     let module_map_rc = Self::module_map(self.v8_isolate());
     let scope = &mut self.handle_scope();
@@ -1130,7 +1129,7 @@ impl JsRuntime {
     receiver
   }
 
-  fn dynamic_import_reject(&mut self, id: ModuleLoadId, err: AnyError) {
+  fn dynamic_import_reject(&mut self, id: ModuleLoadId, err: Error) {
     let module_map_rc = Self::module_map(self.v8_isolate());
     let scope = &mut self.handle_scope();
 
@@ -1193,7 +1192,7 @@ impl JsRuntime {
   fn prepare_dyn_imports(
     &mut self,
     cx: &mut Context,
-  ) -> Poll<Result<(), AnyError>> {
+  ) -> Poll<Result<(), Error>> {
     let module_map_rc = Self::module_map(self.v8_isolate());
 
     if module_map_rc.borrow().preparing_dynamic_imports.is_empty() {
@@ -1230,10 +1229,7 @@ impl JsRuntime {
     }
   }
 
-  fn poll_dyn_imports(
-    &mut self,
-    cx: &mut Context,
-  ) -> Poll<Result<(), AnyError>> {
+  fn poll_dyn_imports(&mut self, cx: &mut Context) -> Poll<Result<(), Error>> {
     let module_map_rc = Self::module_map(self.v8_isolate());
 
     if module_map_rc.borrow().pending_dynamic_imports.is_empty() {
@@ -1408,7 +1404,7 @@ impl JsRuntime {
     &mut self,
     specifier: &ModuleSpecifier,
     code: Option<String>,
-  ) -> Result<ModuleId, AnyError> {
+  ) -> Result<ModuleId, Error> {
     let module_map_rc = Self::module_map(self.v8_isolate());
     if let Some(code) = code {
       module_map_rc.borrow_mut().new_module(
@@ -1445,7 +1441,7 @@ impl JsRuntime {
     &mut self,
     specifier: &ModuleSpecifier,
     code: Option<String>,
-  ) -> Result<ModuleId, AnyError> {
+  ) -> Result<ModuleId, Error> {
     let module_map_rc = Self::module_map(self.v8_isolate());
     if let Some(code) = code {
       module_map_rc.borrow_mut().new_module(
@@ -1471,7 +1467,7 @@ impl JsRuntime {
     Ok(root_id)
   }
 
-  fn check_promise_exceptions(&mut self) -> Result<(), AnyError> {
+  fn check_promise_exceptions(&mut self) -> Result<(), Error> {
     let state_rc = Self::state(self.v8_isolate());
     let mut state = state_rc.borrow_mut();
 
@@ -1496,7 +1492,7 @@ impl JsRuntime {
   }
 
   // Send finished responses to JS
-  fn resolve_async_ops(&mut self, cx: &mut Context) -> Result<(), AnyError> {
+  fn resolve_async_ops(&mut self, cx: &mut Context) -> Result<(), Error> {
     let state_rc = Self::state(self.v8_isolate());
 
     let js_recv_cb_handle = state_rc.borrow().js_recv_cb.clone().unwrap();
@@ -1552,7 +1548,7 @@ impl JsRuntime {
     }
   }
 
-  fn drain_macrotasks(&mut self) -> Result<(), AnyError> {
+  fn drain_macrotasks(&mut self) -> Result<(), Error> {
     let js_macrotask_cb_handle =
       match &Self::state(self.v8_isolate()).borrow().js_macrotask_cb {
         Some(handle) => handle.clone(),
@@ -1909,11 +1905,11 @@ pub mod tests {
 
   #[test]
   fn test_error_builder() {
-    fn op_err(_: &mut OpState, _: (), _: ()) -> Result<(), AnyError> {
+    fn op_err(_: &mut OpState, _: (), _: ()) -> Result<(), Error> {
       Err(custom_error("DOMExceptionOperationError", "abc"))
     }
 
-    pub fn get_error_class_name(_: &AnyError) -> &'static str {
+    pub fn get_error_class_name(_: &Error) -> &'static str {
       "DOMExceptionOperationError"
     }
 
@@ -2077,7 +2073,7 @@ pub mod tests {
         specifier: &str,
         referrer: &str,
         _is_main: bool,
-      ) -> Result<ModuleSpecifier, AnyError> {
+      ) -> Result<ModuleSpecifier, Error> {
         assert_eq!(specifier, "file:///main.js");
         assert_eq!(referrer, ".");
         let s = crate::resolve_import(specifier, referrer).unwrap();
@@ -2316,7 +2312,7 @@ assertEquals(1, notify_return_value);
       op_state: Rc<RefCell<OpState>>,
       _: (),
       _: (),
-    ) -> Result<(), AnyError> {
+    ) -> Result<(), Error> {
       let n = {
         let op_state = op_state.borrow();
         let inner_state = op_state.borrow::<InnerState>();
diff --git a/ext/tls/lib.rs b/ext/tls/lib.rs
index fb4fac85b..b29a142b9 100644
--- a/ext/tls/lib.rs
+++ b/ext/tls/lib.rs
@@ -6,7 +6,7 @@ pub use rustls_native_certs;
 pub use webpki;
 pub use webpki_roots;
 
-use deno_core::error::anyhow;
+use deno_core::anyhow::anyhow;
 use deno_core::error::custom_error;
 use deno_core::error::generic_error;
 use deno_core::error::AnyError;
diff --git a/runtime/fs_util.rs b/runtime/fs_util.rs
index 93286ecf3..695b3be62 100644
--- a/runtime/fs_util.rs
+++ b/runtime/fs_util.rs
@@ -1,7 +1,7 @@
 // Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 
+use deno_core::anyhow::Context;
 use deno_core::error::AnyError;
-use deno_core::error::Context;
 pub use deno_core::normalize_path;
 use std::env::current_dir;
 use std::io::Error;
diff --git a/runtime/ops/runtime.rs b/runtime/ops/runtime.rs
index 66dd0de4b..6006716ef 100644
--- a/runtime/ops/runtime.rs
+++ b/runtime/ops/runtime.rs
@@ -1,8 +1,8 @@
 // Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 
 use crate::permissions::Permissions;
+use deno_core::anyhow::Context;
 use deno_core::error::AnyError;
-use deno_core::error::Context;
 use deno_core::op_sync;
 use deno_core::Extension;
 use deno_core::ModuleSpecifier;