diff --git a/cli/flags.rs b/cli/flags.rs
index da0f8ad0e4..6b4e5aa5f6 100644
--- a/cli/flags.rs
+++ b/cli/flags.rs
@@ -11,6 +11,7 @@ use deno_core::serde::Deserialize;
 use deno_core::serde::Deserializer;
 use deno_core::serde::Serialize;
 use deno_core::serde::Serializer;
+use deno_core::url::Url;
 use deno_runtime::permissions::PermissionsOptions;
 use log::Level;
 use std::fmt;
@@ -172,6 +173,7 @@ pub struct Flags {
   pub allow_read: Option<Vec<PathBuf>>,
   pub allow_run: bool,
   pub allow_write: Option<Vec<PathBuf>>,
+  pub location: Option<Url>,
   pub cache_blocklist: Vec<String>,
   pub ca_file: Option<String>,
   pub cached_only: bool,
@@ -324,19 +326,13 @@ lazy_static! {
 }
 
 /// Main entry point for parsing deno's command line flags.
-/// Exits the process on error.
-pub fn flags_from_vec(args: Vec<String>) -> Flags {
-  match flags_from_vec_safe(args) {
-    Ok(flags) => flags,
-    Err(err) => err.exit(),
-  }
-}
-
-/// Same as flags_from_vec but does not exit on error.
-pub fn flags_from_vec_safe(args: Vec<String>) -> clap::Result<Flags> {
+pub fn flags_from_vec(args: Vec<String>) -> clap::Result<Flags> {
   let version = crate::version::deno();
   let app = clap_root(&*version);
-  let matches = app.get_matches_from_safe(args)?;
+  let matches = app.get_matches_from_safe(args).map_err(|e| clap::Error {
+    message: e.message.trim_start_matches("error: ").to_string(),
+    ..e
+  })?;
 
   let mut flags = Flags::default();
 
@@ -597,7 +593,7 @@ fn eval_parse(flags: &mut Flags, matches: &clap::ArgMatches) {
     print,
     code,
     as_typescript,
-  }
+  };
 }
 
 fn info_parse(flags: &mut Flags, matches: &clap::ArgMatches) {
@@ -671,6 +667,7 @@ fn runtime_args<'a, 'b>(
   };
   app
     .arg(cached_only_arg())
+    .arg(location_arg())
     .arg(v8_flags_arg())
     .arg(seed_arg())
 }
@@ -689,8 +686,10 @@ fn runtime_args_parse(
   if include_inspector {
     inspect_arg_parse(flags, matches);
   }
+  location_arg_parse(flags, matches);
   v8_flags_arg_parse(flags, matches);
   seed_arg_parse(flags, matches);
+  inspect_arg_parse(flags, matches);
 }
 
 fn run_parse(flags: &mut Flags, matches: &clap::ArgMatches) {
@@ -1487,6 +1486,30 @@ fn ca_file_arg_parse(flags: &mut Flags, matches: &clap::ArgMatches) {
   flags.ca_file = matches.value_of("cert").map(ToOwned::to_owned);
 }
 
+fn location_arg_parse(flags: &mut Flags, matches: &clap::ArgMatches) {
+  flags.location = matches
+    .value_of("location")
+    .map(|href| Url::parse(href).unwrap());
+}
+
+fn location_arg<'a, 'b>() -> Arg<'a, 'b> {
+  Arg::with_name("location")
+    .long("location")
+    .takes_value(true)
+    .value_name("HREF")
+    .validator(|href| {
+      let url = Url::parse(&href);
+      if url.is_err() {
+        return Err("Failed to parse URL".to_string());
+      }
+      if !["http", "https"].contains(&url.unwrap().scheme()) {
+        return Err("Expected protocol \"http\" or \"https\"".to_string());
+      }
+      Ok(())
+    })
+    .help("Value of 'globalThis.location' used by some web APIs")
+}
+
 fn inspect_args<'a, 'b>(app: App<'a, 'b>) -> App<'a, 'b> {
   app
     .arg(
@@ -1729,7 +1752,6 @@ fn permission_args_parse(flags: &mut Flags, matches: &clap::ArgMatches) {
 // TODO(ry) move this to utility module and add test.
 /// Strips fragment part of URL. Panics on bad URL.
 pub fn resolve_urls(urls: Vec<String>) -> Vec<String> {
-  use deno_core::url::Url;
   let mut out: Vec<String> = vec![];
   for urlstr in urls.iter() {
     if let Ok(mut url) = Url::from_str(urlstr) {
@@ -1758,7 +1780,7 @@ mod tests {
   #[test]
   fn global_flags() {
     #[rustfmt::skip]
-    let r = flags_from_vec_safe(svec!["deno", "--unstable", "--log-level", "debug", "--quiet", "run", "script.ts"]);
+    let r = flags_from_vec(svec!["deno", "--unstable", "--log-level", "debug", "--quiet", "run", "script.ts"]);
     let flags = r.unwrap();
     assert_eq!(
       flags,
@@ -1772,15 +1794,14 @@ mod tests {
       }
     );
     #[rustfmt::skip]
-    let r2 = flags_from_vec_safe(svec!["deno", "run", "--unstable", "--log-level", "debug", "--quiet", "script.ts"]);
+    let r2 = flags_from_vec(svec!["deno", "run", "--unstable", "--log-level", "debug", "--quiet", "script.ts"]);
     let flags2 = r2.unwrap();
     assert_eq!(flags2, flags);
   }
 
   #[test]
   fn upgrade() {
-    let r =
-      flags_from_vec_safe(svec!["deno", "upgrade", "--dry-run", "--force"]);
+    let r = flags_from_vec(svec!["deno", "upgrade", "--dry-run", "--force"]);
     let flags = r.unwrap();
     assert_eq!(
       flags,
@@ -1800,15 +1821,15 @@ mod tests {
 
   #[test]
   fn version() {
-    let r = flags_from_vec_safe(svec!["deno", "--version"]);
+    let r = flags_from_vec(svec!["deno", "--version"]);
     assert_eq!(r.unwrap_err().kind, clap::ErrorKind::VersionDisplayed);
-    let r = flags_from_vec_safe(svec!["deno", "-V"]);
+    let r = flags_from_vec(svec!["deno", "-V"]);
     assert_eq!(r.unwrap_err().kind, clap::ErrorKind::VersionDisplayed);
   }
 
   #[test]
   fn run_reload() {
-    let r = flags_from_vec_safe(svec!["deno", "run", "-r", "script.ts"]);
+    let r = flags_from_vec(svec!["deno", "run", "-r", "script.ts"]);
     let flags = r.unwrap();
     assert_eq!(
       flags,
@@ -1824,7 +1845,7 @@ mod tests {
 
   #[test]
   fn run_watch() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "run",
       "--unstable",
@@ -1847,13 +1868,8 @@ mod tests {
 
   #[test]
   fn run_reload_allow_write() {
-    let r = flags_from_vec_safe(svec![
-      "deno",
-      "run",
-      "-r",
-      "--allow-write",
-      "script.ts"
-    ]);
+    let r =
+      flags_from_vec(svec!["deno", "run", "-r", "--allow-write", "script.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -1869,7 +1885,7 @@ mod tests {
 
   #[test]
   fn run_v8_flags() {
-    let r = flags_from_vec_safe(svec!["deno", "run", "--v8-flags=--help"]);
+    let r = flags_from_vec(svec!["deno", "run", "--v8-flags=--help"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -1881,7 +1897,7 @@ mod tests {
       }
     );
 
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "run",
       "--v8-flags=--expose-gc,--gc-stats=1",
@@ -1901,7 +1917,7 @@ mod tests {
 
   #[test]
   fn script_args() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "run",
       "--allow-net",
@@ -1924,7 +1940,7 @@ mod tests {
 
   #[test]
   fn allow_all() {
-    let r = flags_from_vec_safe(svec!["deno", "run", "--allow-all", "gist.ts"]);
+    let r = flags_from_vec(svec!["deno", "run", "--allow-all", "gist.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -1945,8 +1961,7 @@ mod tests {
 
   #[test]
   fn allow_read() {
-    let r =
-      flags_from_vec_safe(svec!["deno", "run", "--allow-read", "gist.ts"]);
+    let r = flags_from_vec(svec!["deno", "run", "--allow-read", "gist.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -1961,8 +1976,7 @@ mod tests {
 
   #[test]
   fn allow_hrtime() {
-    let r =
-      flags_from_vec_safe(svec!["deno", "run", "--allow-hrtime", "gist.ts"]);
+    let r = flags_from_vec(svec!["deno", "run", "--allow-hrtime", "gist.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -1980,7 +1994,7 @@ mod tests {
     // notice that flags passed after double dash will not
     // be parsed to Flags but instead forwarded to
     // script args as Deno.args
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "run",
       "--allow-write",
@@ -2004,8 +2018,7 @@ mod tests {
 
   #[test]
   fn fmt() {
-    let r =
-      flags_from_vec_safe(svec!["deno", "fmt", "script_1.ts", "script_2.ts"]);
+    let r = flags_from_vec(svec!["deno", "fmt", "script_1.ts", "script_2.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2021,7 +2034,7 @@ mod tests {
       }
     );
 
-    let r = flags_from_vec_safe(svec!["deno", "fmt", "--check"]);
+    let r = flags_from_vec(svec!["deno", "fmt", "--check"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2034,7 +2047,7 @@ mod tests {
       }
     );
 
-    let r = flags_from_vec_safe(svec!["deno", "fmt"]);
+    let r = flags_from_vec(svec!["deno", "fmt"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2047,7 +2060,7 @@ mod tests {
       }
     );
 
-    let r = flags_from_vec_safe(svec!["deno", "fmt", "--watch", "--unstable"]);
+    let r = flags_from_vec(svec!["deno", "fmt", "--watch", "--unstable"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2062,7 +2075,7 @@ mod tests {
       }
     );
 
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "fmt",
       "--check",
@@ -2088,7 +2101,7 @@ mod tests {
 
   #[test]
   fn language_server() {
-    let r = flags_from_vec_safe(svec!["deno", "lsp"]);
+    let r = flags_from_vec(svec!["deno", "lsp"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2100,7 +2113,7 @@ mod tests {
 
   #[test]
   fn lint() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "lint",
       "--unstable",
@@ -2124,7 +2137,7 @@ mod tests {
       }
     );
 
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "lint",
       "--unstable",
@@ -2147,7 +2160,7 @@ mod tests {
       }
     );
 
-    let r = flags_from_vec_safe(svec!["deno", "lint", "--unstable", "--rules"]);
+    let r = flags_from_vec(svec!["deno", "lint", "--unstable", "--rules"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2162,7 +2175,7 @@ mod tests {
       }
     );
 
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "lint",
       "--unstable",
@@ -2186,7 +2199,7 @@ mod tests {
 
   #[test]
   fn types() {
-    let r = flags_from_vec_safe(svec!["deno", "types"]);
+    let r = flags_from_vec(svec!["deno", "types"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2198,7 +2211,7 @@ mod tests {
 
   #[test]
   fn cache() {
-    let r = flags_from_vec_safe(svec!["deno", "cache", "script.ts"]);
+    let r = flags_from_vec(svec!["deno", "cache", "script.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2212,7 +2225,7 @@ mod tests {
 
   #[test]
   fn info() {
-    let r = flags_from_vec_safe(svec!["deno", "info", "script.ts"]);
+    let r = flags_from_vec(svec!["deno", "info", "script.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2224,7 +2237,7 @@ mod tests {
       }
     );
 
-    let r = flags_from_vec_safe(svec!["deno", "info", "--reload", "script.ts"]);
+    let r = flags_from_vec(svec!["deno", "info", "--reload", "script.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2237,7 +2250,7 @@ mod tests {
       }
     );
 
-    let r = flags_from_vec_safe(svec!["deno", "info", "--json", "script.ts"]);
+    let r = flags_from_vec(svec!["deno", "info", "--json", "script.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2249,7 +2262,7 @@ mod tests {
       }
     );
 
-    let r = flags_from_vec_safe(svec!["deno", "info"]);
+    let r = flags_from_vec(svec!["deno", "info"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2261,7 +2274,7 @@ mod tests {
       }
     );
 
-    let r = flags_from_vec_safe(svec!["deno", "info", "--json"]);
+    let r = flags_from_vec(svec!["deno", "info", "--json"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2276,13 +2289,8 @@ mod tests {
 
   #[test]
   fn tsconfig() {
-    let r = flags_from_vec_safe(svec![
-      "deno",
-      "run",
-      "-c",
-      "tsconfig.json",
-      "script.ts"
-    ]);
+    let r =
+      flags_from_vec(svec!["deno", "run", "-c", "tsconfig.json", "script.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2297,8 +2305,7 @@ mod tests {
 
   #[test]
   fn eval() {
-    let r =
-      flags_from_vec_safe(svec!["deno", "eval", "'console.log(\"hello\")'"]);
+    let r = flags_from_vec(svec!["deno", "eval", "'console.log(\"hello\")'"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2321,7 +2328,7 @@ mod tests {
 
   #[test]
   fn eval_p() {
-    let r = flags_from_vec_safe(svec!["deno", "eval", "-p", "1+2"]);
+    let r = flags_from_vec(svec!["deno", "eval", "-p", "1+2"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2344,12 +2351,8 @@ mod tests {
 
   #[test]
   fn eval_typescript() {
-    let r = flags_from_vec_safe(svec![
-      "deno",
-      "eval",
-      "-T",
-      "'console.log(\"hello\")'"
-    ]);
+    let r =
+      flags_from_vec(svec!["deno", "eval", "-T", "'console.log(\"hello\")'"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2373,7 +2376,7 @@ mod tests {
   #[test]
   fn eval_with_flags() {
     #[rustfmt::skip]
-    let r = flags_from_vec_safe(svec!["deno", "eval", "--unstable", "--import-map", "import_map.json", "--no-remote", "--config", "tsconfig.json", "--no-check", "--reload", "--lock", "lock.json", "--lock-write", "--cert", "example.crt", "--cached-only", "--v8-flags=--help", "--seed", "1", "--inspect=127.0.0.1:9229", "42"]);
+    let r = flags_from_vec(svec!["deno", "eval", "--unstable", "--import-map", "import_map.json", "--no-remote", "--config", "tsconfig.json", "--no-check", "--reload", "--lock", "lock.json", "--lock-write", "--cert", "example.crt", "--cached-only", "--location", "https:foo", "--v8-flags=--help", "--seed", "1", "--inspect=127.0.0.1:9229", "42"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2392,6 +2395,7 @@ mod tests {
         lock_write: true,
         ca_file: Some("example.crt".to_string()),
         cached_only: true,
+        location: Some(Url::parse("https://foo/").unwrap()),
         v8_flags: svec!["--help", "--random-seed=1"],
         seed: Some(1),
         inspect: Some("127.0.0.1:9229".parse().unwrap()),
@@ -2409,7 +2413,7 @@ mod tests {
 
   #[test]
   fn eval_args() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "eval",
       "console.log(Deno.args)",
@@ -2439,7 +2443,7 @@ mod tests {
 
   #[test]
   fn repl() {
-    let r = flags_from_vec_safe(svec!["deno"]);
+    let r = flags_from_vec(svec!["deno"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2460,7 +2464,7 @@ mod tests {
   #[test]
   fn repl_with_flags() {
     #[rustfmt::skip]
-    let r = flags_from_vec_safe(svec!["deno", "repl", "--unstable", "--import-map", "import_map.json", "--no-remote", "--config", "tsconfig.json", "--no-check", "--reload", "--lock", "lock.json", "--lock-write", "--cert", "example.crt", "--cached-only", "--v8-flags=--help", "--seed", "1", "--inspect=127.0.0.1:9229"]);
+    let r = flags_from_vec(svec!["deno", "repl", "--unstable", "--import-map", "import_map.json", "--no-remote", "--config", "tsconfig.json", "--no-check", "--reload", "--lock", "lock.json", "--lock-write", "--cert", "example.crt", "--cached-only", "--location", "https:foo", "--v8-flags=--help", "--seed", "1", "--inspect=127.0.0.1:9229"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2476,6 +2480,7 @@ mod tests {
         lock_write: true,
         ca_file: Some("example.crt".to_string()),
         cached_only: true,
+        location: Some(Url::parse("https://foo/").unwrap()),
         v8_flags: svec!["--help", "--random-seed=1"],
         seed: Some(1),
         inspect: Some("127.0.0.1:9229".parse().unwrap()),
@@ -2496,7 +2501,7 @@ mod tests {
     use tempfile::TempDir;
     let temp_dir = TempDir::new().expect("tempdir fail").path().to_path_buf();
 
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "run",
       format!("--allow-read=.,{}", temp_dir.to_str().unwrap()),
@@ -2519,7 +2524,7 @@ mod tests {
     use tempfile::TempDir;
     let temp_dir = TempDir::new().expect("tempdir fail").path().to_path_buf();
 
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "run",
       format!("--allow-write=.,{}", temp_dir.to_str().unwrap()),
@@ -2539,7 +2544,7 @@ mod tests {
 
   #[test]
   fn allow_net_allowlist() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "run",
       "--allow-net=127.0.0.1",
@@ -2559,7 +2564,7 @@ mod tests {
 
   #[test]
   fn bundle() {
-    let r = flags_from_vec_safe(svec!["deno", "bundle", "source.ts"]);
+    let r = flags_from_vec(svec!["deno", "bundle", "source.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2574,7 +2579,7 @@ mod tests {
 
   #[test]
   fn bundle_with_config() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "bundle",
       "--no-remote",
@@ -2600,8 +2605,7 @@ mod tests {
 
   #[test]
   fn bundle_with_output() {
-    let r =
-      flags_from_vec_safe(svec!["deno", "bundle", "source.ts", "bundle.js"]);
+    let r = flags_from_vec(svec!["deno", "bundle", "source.ts", "bundle.js"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2617,7 +2621,7 @@ mod tests {
 
   #[test]
   fn bundle_with_lock() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "bundle",
       "--lock-write",
@@ -2640,8 +2644,7 @@ mod tests {
 
   #[test]
   fn bundle_with_reload() {
-    let r =
-      flags_from_vec_safe(svec!["deno", "bundle", "--reload", "source.ts"]);
+    let r = flags_from_vec(svec!["deno", "bundle", "--reload", "source.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2657,9 +2660,8 @@ mod tests {
 
   #[test]
   fn bundle_nocheck() {
-    let r =
-      flags_from_vec_safe(svec!["deno", "bundle", "--no-check", "script.ts"])
-        .unwrap();
+    let r = flags_from_vec(svec!["deno", "bundle", "--no-check", "script.ts"])
+      .unwrap();
     assert_eq!(
       r,
       Flags {
@@ -2675,7 +2677,7 @@ mod tests {
 
   #[test]
   fn bundle_watch() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "bundle",
       "--watch",
@@ -2698,7 +2700,7 @@ mod tests {
 
   #[test]
   fn run_import_map() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "run",
       "--unstable",
@@ -2720,7 +2722,7 @@ mod tests {
 
   #[test]
   fn info_import_map() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "info",
       "--unstable",
@@ -2743,7 +2745,7 @@ mod tests {
 
   #[test]
   fn cache_import_map() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "cache",
       "--unstable",
@@ -2765,7 +2767,7 @@ mod tests {
 
   #[test]
   fn doc_import_map() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "doc",
       "--unstable",
@@ -2791,7 +2793,7 @@ mod tests {
   #[test]
   fn cache_multiple() {
     let r =
-      flags_from_vec_safe(svec!["deno", "cache", "script.ts", "script_two.ts"]);
+      flags_from_vec(svec!["deno", "cache", "script.ts", "script_two.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2805,8 +2807,7 @@ mod tests {
 
   #[test]
   fn run_seed() {
-    let r =
-      flags_from_vec_safe(svec!["deno", "run", "--seed", "250", "script.ts"]);
+    let r = flags_from_vec(svec!["deno", "run", "--seed", "250", "script.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2822,7 +2823,7 @@ mod tests {
 
   #[test]
   fn run_seed_with_v8_flags() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "run",
       "--seed",
@@ -2845,7 +2846,7 @@ mod tests {
 
   #[test]
   fn install() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "install",
       "https://deno.land/std/examples/colors.ts"
@@ -2868,7 +2869,7 @@ mod tests {
   #[test]
   fn install_with_flags() {
     #[rustfmt::skip]
-    let r = flags_from_vec_safe(svec!["deno", "install", "--unstable", "--import-map", "import_map.json", "--no-remote", "--config", "tsconfig.json", "--no-check", "--reload", "--lock", "lock.json", "--lock-write", "--cert", "example.crt", "--cached-only", "--allow-read", "--allow-net", "--v8-flags=--help", "--seed", "1", "--inspect=127.0.0.1:9229", "--name", "file_server", "--root", "/foo", "--force", "https://deno.land/std/http/file_server.ts", "foo", "bar"]);
+    let r = flags_from_vec(svec!["deno", "install", "--unstable", "--import-map", "import_map.json", "--no-remote", "--config", "tsconfig.json", "--no-check", "--reload", "--lock", "lock.json", "--lock-write", "--cert", "example.crt", "--cached-only", "--allow-read", "--allow-net", "--v8-flags=--help", "--seed", "1", "--inspect=127.0.0.1:9229", "--name", "file_server", "--root", "/foo", "--force", "https://deno.land/std/http/file_server.ts", "foo", "bar"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2901,12 +2902,8 @@ mod tests {
 
   #[test]
   fn log_level() {
-    let r = flags_from_vec_safe(svec![
-      "deno",
-      "run",
-      "--log-level=debug",
-      "script.ts"
-    ]);
+    let r =
+      flags_from_vec(svec!["deno", "run", "--log-level=debug", "script.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2921,7 +2918,7 @@ mod tests {
 
   #[test]
   fn quiet() {
-    let r = flags_from_vec_safe(svec!["deno", "run", "-q", "script.ts"]);
+    let r = flags_from_vec(svec!["deno", "run", "-q", "script.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2936,7 +2933,7 @@ mod tests {
 
   #[test]
   fn completions() {
-    let r = flags_from_vec_safe(svec!["deno", "completions", "zsh"]).unwrap();
+    let r = flags_from_vec(svec!["deno", "completions", "zsh"]).unwrap();
 
     match r.subcommand {
       DenoSubcommand::Completions { buf } => assert!(!buf.is_empty()),
@@ -2946,7 +2943,7 @@ mod tests {
 
   #[test]
   fn run_with_args() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "run",
       "script.ts",
@@ -2963,9 +2960,11 @@ mod tests {
         ..Flags::default()
       }
     );
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "run",
+      "--location",
+      "https:foo",
       "--allow-read",
       "script.ts",
       "--allow-net",
@@ -2980,14 +2979,14 @@ mod tests {
         subcommand: DenoSubcommand::Run {
           script: "script.ts".to_string(),
         },
+        location: Some(Url::parse("https://foo/").unwrap()),
         allow_read: Some(vec![]),
         argv: svec!["--allow-net", "-r", "--help", "--foo", "bar"],
         ..Flags::default()
       }
     );
 
-    let r =
-      flags_from_vec_safe(svec!["deno", "run", "script.ts", "foo", "bar"]);
+    let r = flags_from_vec(svec!["deno", "run", "script.ts", "foo", "bar"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -2998,7 +2997,7 @@ mod tests {
         ..Flags::default()
       }
     );
-    let r = flags_from_vec_safe(svec!["deno", "run", "script.ts", "-"]);
+    let r = flags_from_vec(svec!["deno", "run", "script.ts", "-"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -3011,7 +3010,7 @@ mod tests {
     );
 
     let r =
-      flags_from_vec_safe(svec!["deno", "run", "script.ts", "-", "foo", "bar"]);
+      flags_from_vec(svec!["deno", "run", "script.ts", "-", "foo", "bar"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -3026,8 +3025,7 @@ mod tests {
 
   #[test]
   fn no_check() {
-    let r =
-      flags_from_vec_safe(svec!["deno", "run", "--no-check", "script.ts"]);
+    let r = flags_from_vec(svec!["deno", "run", "--no-check", "script.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -3042,8 +3040,7 @@ mod tests {
 
   #[test]
   fn no_remote() {
-    let r =
-      flags_from_vec_safe(svec!["deno", "run", "--no-remote", "script.ts"]);
+    let r = flags_from_vec(svec!["deno", "run", "--no-remote", "script.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -3058,8 +3055,7 @@ mod tests {
 
   #[test]
   fn cached_only() {
-    let r =
-      flags_from_vec_safe(svec!["deno", "run", "--cached-only", "script.ts"]);
+    let r = flags_from_vec(svec!["deno", "run", "--cached-only", "script.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -3074,7 +3070,7 @@ mod tests {
 
   #[test]
   fn allow_net_allowlist_with_ports() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "run",
       "--allow-net=deno.land,:8000,:4545",
@@ -3102,7 +3098,7 @@ mod tests {
 
   #[test]
   fn allow_net_allowlist_with_ipv6_address() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "run",
       "--allow-net=deno.land,deno.land:80,::,127.0.0.1,[::1],1.2.3.4:5678,:5678,[::1]:8080",
@@ -3133,7 +3129,7 @@ mod tests {
 
   #[test]
   fn lock_write() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "run",
       "--lock-write",
@@ -3156,7 +3152,7 @@ mod tests {
   #[test]
   fn test_with_flags() {
     #[rustfmt::skip]
-    let r = flags_from_vec_safe(svec!["deno", "test", "--unstable", "--no-run", "--filter", "- foo", "--coverage=cov", "--allow-net", "--allow-none", "dir1/", "dir2/", "--", "arg1", "arg2"]);
+    let r = flags_from_vec(svec!["deno", "test", "--unstable", "--no-run", "--filter", "- foo", "--coverage=cov", "--location", "https:foo", "--allow-net", "--allow-none", "dir1/", "dir2/", "--", "arg1", "arg2"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -3170,6 +3166,7 @@ mod tests {
         },
         unstable: true,
         coverage_dir: Some("cov".to_string()),
+        location: Some(Url::parse("https://foo/").unwrap()),
         allow_net: Some(vec![]),
         argv: svec!["arg1", "arg2"],
         ..Flags::default()
@@ -3179,7 +3176,7 @@ mod tests {
 
   #[test]
   fn run_with_cafile() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "run",
       "--cert",
@@ -3200,7 +3197,7 @@ mod tests {
 
   #[test]
   fn bundle_with_cafile() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "bundle",
       "--cert",
@@ -3222,8 +3219,7 @@ mod tests {
 
   #[test]
   fn upgrade_with_ca_file() {
-    let r =
-      flags_from_vec_safe(svec!["deno", "upgrade", "--cert", "example.crt"]);
+    let r = flags_from_vec(svec!["deno", "upgrade", "--cert", "example.crt"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -3243,7 +3239,7 @@ mod tests {
 
   #[test]
   fn cache_with_cafile() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "cache",
       "--cert",
@@ -3265,7 +3261,7 @@ mod tests {
 
   #[test]
   fn info_with_cafile() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "info",
       "--cert",
@@ -3287,8 +3283,7 @@ mod tests {
 
   #[test]
   fn doc() {
-    let r =
-      flags_from_vec_safe(svec!["deno", "doc", "--json", "path/to/module.ts"]);
+    let r = flags_from_vec(svec!["deno", "doc", "--json", "path/to/module.ts"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -3302,7 +3297,7 @@ mod tests {
       }
     );
 
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "doc",
       "path/to/module.ts",
@@ -3321,7 +3316,7 @@ mod tests {
       }
     );
 
-    let r = flags_from_vec_safe(svec!["deno", "doc"]);
+    let r = flags_from_vec(svec!["deno", "doc"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -3335,8 +3330,7 @@ mod tests {
       }
     );
 
-    let r =
-      flags_from_vec_safe(svec!["deno", "doc", "--builtin", "Deno.Listener"]);
+    let r = flags_from_vec(svec!["deno", "doc", "--builtin", "Deno.Listener"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -3350,12 +3344,8 @@ mod tests {
       }
     );
 
-    let r = flags_from_vec_safe(svec![
-      "deno",
-      "doc",
-      "--private",
-      "path/to/module.js"
-    ]);
+    let r =
+      flags_from_vec(svec!["deno", "doc", "--private", "path/to/module.js"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -3372,7 +3362,7 @@ mod tests {
 
   #[test]
   fn inspect_default_host() {
-    let r = flags_from_vec_safe(svec!["deno", "run", "--inspect", "foo.js"]);
+    let r = flags_from_vec(svec!["deno", "run", "--inspect", "foo.js"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -3387,7 +3377,7 @@ mod tests {
 
   #[test]
   fn compile() {
-    let r = flags_from_vec_safe(svec![
+    let r = flags_from_vec(svec![
       "deno",
       "compile",
       "https://deno.land/std/examples/colors.ts"
@@ -3408,7 +3398,7 @@ mod tests {
   #[test]
   fn compile_with_flags() {
     #[rustfmt::skip]
-    let r = flags_from_vec_safe(svec!["deno", "compile", "--unstable", "--import-map", "import_map.json", "--no-remote", "--config", "tsconfig.json", "--no-check", "--reload", "--lock", "lock.json", "--lock-write", "--cert", "example.crt", "--cached-only", "--allow-read", "--allow-net", "--v8-flags=--help", "--seed", "1", "--output", "colors", "https://deno.land/std/examples/colors.ts", "foo", "bar"]);
+    let r = flags_from_vec(svec!["deno", "compile", "--unstable", "--import-map", "import_map.json", "--no-remote", "--config", "tsconfig.json", "--no-check", "--reload", "--lock", "lock.json", "--lock-write", "--cert", "example.crt", "--cached-only", "--location", "https:foo", "--allow-read", "--allow-net", "--v8-flags=--help", "--seed", "1", "--output", "colors", "https://deno.land/std/examples/colors.ts", "foo", "bar"]);
     assert_eq!(
       r.unwrap(),
       Flags {
@@ -3427,6 +3417,7 @@ mod tests {
         lock_write: true,
         ca_file: Some("example.crt".to_string()),
         cached_only: true,
+        location: Some(Url::parse("https://foo/").unwrap()),
         allow_read: Some(vec![]),
         allow_net: Some(vec![]),
         v8_flags: svec!["--help", "--random-seed=1"],
diff --git a/cli/main.rs b/cli/main.rs
index 8210eb5c71..0669916248 100644
--- a/cli/main.rs
+++ b/cli/main.rs
@@ -204,6 +204,7 @@ pub fn create_main_worker(
     ts_version: version::TYPESCRIPT.to_string(),
     no_color: !colors::use_color(),
     get_error_class_fn: Some(&crate::errors::get_error_class_name),
+    location: program_state.flags.location.clone(),
   };
 
   let mut worker = MainWorker::from_options(main_module, permissions, &options);
@@ -1223,6 +1224,21 @@ fn get_subcommand(
   }
 }
 
+fn unwrap_or_exit<T>(result: Result<T, AnyError>) -> T {
+  match result {
+    Ok(value) => value,
+    Err(error) => {
+      let msg = format!(
+        "{}: {}",
+        colors::red_bold("error"),
+        error.to_string().trim()
+      );
+      eprintln!("{}", msg);
+      std::process::exit(1);
+    }
+  }
+}
+
 pub fn main() {
   #[cfg(windows)]
   colors::enable_ansi(); // For Windows 10
@@ -1233,16 +1249,12 @@ pub fn main() {
     std::process::exit(1);
   }
 
-  let flags = flags::flags_from_vec(args);
+  let flags =
+    unwrap_or_exit(flags::flags_from_vec(args).map_err(AnyError::from));
   if !flags.v8_flags.is_empty() {
     init_v8_flags(&*flags.v8_flags);
   }
   init_logger(flags.log_level);
 
-  let subcommand_future = get_subcommand(flags);
-  let result = tokio_util::run_basic(subcommand_future);
-  if let Err(err) = result {
-    eprintln!("{}: {}", colors::red_bold("error"), err.to_string());
-    std::process::exit(1);
-  }
+  unwrap_or_exit(tokio_util::run_basic(get_subcommand(flags)));
 }
diff --git a/cli/standalone.rs b/cli/standalone.rs
index 8379358a02..8d95d30f2c 100644
--- a/cli/standalone.rs
+++ b/cli/standalone.rs
@@ -167,7 +167,7 @@ async fn run(source_code: String, metadata: Metadata) -> Result<(), AnyError> {
   // TODO(nayeemrmn): Unify this Flags -> WorkerOptions mapping with `deno run`.
   let options = WorkerOptions {
     apply_source_maps: false,
-    args: flags.argv.clone(),
+    args: flags.argv,
     debug_flag: flags.log_level.map_or(false, |l| l == log::Level::Debug),
     user_agent: crate::http_util::get_user_agent(),
     unstable: flags.unstable,
@@ -183,6 +183,7 @@ async fn run(source_code: String, metadata: Metadata) -> Result<(), AnyError> {
     ts_version: version::TYPESCRIPT.to_string(),
     no_color: !colors::use_color(),
     get_error_class_fn: Some(&crate::errors::get_error_class_name),
+    location: flags.location,
   };
   let mut worker =
     MainWorker::from_options(main_module.clone(), permissions, &options);
@@ -297,6 +298,7 @@ pub fn compile_to_runtime_flags(
     import_map_path: None,
     inspect: None,
     inspect_brk: None,
+    location: flags.location,
     lock: None,
     lock_write: false,
     log_level: flags.log_level,
diff --git a/cli/tests/070_location.ts b/cli/tests/070_location.ts
new file mode 100644
index 0000000000..62fd34af28
--- /dev/null
+++ b/cli/tests/070_location.ts
@@ -0,0 +1,10 @@
+// TODO(nayeemrmn): Add `Location` and `location` to `dlint`'s globals.
+// deno-lint-ignore-file no-undef
+console.log(Location);
+console.log(Location.prototype);
+console.log(location);
+try {
+  location.hostname = "bar";
+} catch (error) {
+  console.log(error);
+}
diff --git a/cli/tests/070_location.ts.out b/cli/tests/070_location.ts.out
new file mode 100644
index 0000000000..66d470b6f6
--- /dev/null
+++ b/cli/tests/070_location.ts.out
@@ -0,0 +1,22 @@
+[WILDCARD][Function: Location]
+Location { [Symbol(Symbol.toStringTag)]: "Location" }
+Location {
+  hash: [Getter/Setter],
+  host: [Getter/Setter],
+  hostname: [Getter/Setter],
+  href: [Getter/Setter],
+  origin: [Getter],
+  password: [Getter/Setter],
+  pathname: [Getter/Setter],
+  port: [Getter/Setter],
+  protocol: [Getter/Setter],
+  search: [Getter/Setter],
+  username: [Getter/Setter],
+  ancestorOrigins: [Getter],
+  assign: [Function: assign],
+  reload: [Function: reload],
+  replace: [Function: replace],
+  toString: [Function: toString]
+}
+NotSupportedError: Cannot set "location.hostname".
+[WILDCARD]
diff --git a/cli/tests/071_location_unset.ts b/cli/tests/071_location_unset.ts
new file mode 100644
index 0000000000..5c0518940a
--- /dev/null
+++ b/cli/tests/071_location_unset.ts
@@ -0,0 +1,5 @@
+// TODO(nayeemrmn): Add `Location` and `location` to `dlint`'s globals.
+// deno-lint-ignore-file no-undef
+console.log(Location);
+console.log(Location.prototype);
+console.log(location);
diff --git a/cli/tests/071_location_unset.ts.out b/cli/tests/071_location_unset.ts.out
new file mode 100644
index 0000000000..2c030a7733
--- /dev/null
+++ b/cli/tests/071_location_unset.ts.out
@@ -0,0 +1,4 @@
+[WILDCARD][Function: Location]
+Location { [Symbol(Symbol.toStringTag)]: "Location" }
+error: Uncaught ReferenceError: Access to "location", run again with --location <href>.
+[WILDCARD]
diff --git a/cli/tests/072_location_relative_fetch.ts b/cli/tests/072_location_relative_fetch.ts
new file mode 100644
index 0000000000..d4764bf7f1
--- /dev/null
+++ b/cli/tests/072_location_relative_fetch.ts
@@ -0,0 +1,2 @@
+const response = await fetch("fetch/hello.txt");
+console.log(await response.text());
diff --git a/cli/tests/072_location_relative_fetch.ts.out b/cli/tests/072_location_relative_fetch.ts.out
new file mode 100644
index 0000000000..8151f6f889
--- /dev/null
+++ b/cli/tests/072_location_relative_fetch.ts.out
@@ -0,0 +1,2 @@
+[WILDCARD]Hello, world!
+
diff --git a/cli/tests/077_fetch_empty.ts b/cli/tests/077_fetch_empty.ts
new file mode 100644
index 0000000000..b10a9094eb
--- /dev/null
+++ b/cli/tests/077_fetch_empty.ts
@@ -0,0 +1 @@
+await fetch("");
diff --git a/cli/tests/077_fetch_empty.ts.out b/cli/tests/077_fetch_empty.ts.out
new file mode 100644
index 0000000000..9dfccf10c0
--- /dev/null
+++ b/cli/tests/077_fetch_empty.ts.out
@@ -0,0 +1,2 @@
+[WILDCARD]error: Uncaught (in promise) URIError: relative URL without a base
+[WILDCARD]
diff --git a/cli/tests/complex_permissions_test.ts b/cli/tests/complex_permissions_test.ts
index fba761a2c5..002d335404 100644
--- a/cli/tests/complex_permissions_test.ts
+++ b/cli/tests/complex_permissions_test.ts
@@ -10,8 +10,8 @@ const test: { [key: string]: (...args: any[]) => void | Promise<void> } = {
       Deno.writeFileSync(file, new Uint8Array(0), { append: true })
     );
   },
-  netFetch(hosts: string[]): void {
-    hosts.forEach((host) => fetch(host));
+  netFetch(urls: string[]): void {
+    urls.forEach((url) => fetch(url));
   },
   netListen(endpoints: string[]): void {
     endpoints.forEach((endpoint) => {
diff --git a/cli/tests/fetch/hello.txt b/cli/tests/fetch/hello.txt
new file mode 100644
index 0000000000..af5626b4a1
--- /dev/null
+++ b/cli/tests/fetch/hello.txt
@@ -0,0 +1 @@
+Hello, world!
diff --git a/cli/tests/integration_tests.rs b/cli/tests/integration_tests.rs
index 68cfe0b507..aabeb1f77b 100644
--- a/cli/tests/integration_tests.rs
+++ b/cli/tests/integration_tests.rs
@@ -1246,7 +1246,7 @@ fn bundle_import_map_no_check() {
     .current_dir(util::root_path())
     .arg("bundle")
     .arg("--no-check")
-    .arg("--importmap")
+    .arg("--import-map")
     .arg(import_map_path)
     .arg("--unstable")
     .arg(import)
@@ -1689,7 +1689,7 @@ fn repl_test_pty_bad_input() {
 
 #[test]
 #[ignore]
-fn run_watch_with_importmap_and_relative_paths() {
+fn run_watch_with_import_map_and_relative_paths() {
   fn create_relative_tmp_file(
     directory: &TempDir,
     filename: &'static str,
@@ -1722,7 +1722,7 @@ fn run_watch_with_importmap_and_relative_paths() {
     .arg("run")
     .arg("--unstable")
     .arg("--watch")
-    .arg("--importmap")
+    .arg("--import-map")
     .arg(&import_map_path)
     .arg(&file_to_watch)
     .env("NO_COLOR", "1")
@@ -2307,6 +2307,8 @@ fn workers() {
     .current_dir(util::tests_path())
     .arg("test")
     .arg("--reload")
+    .arg("--location")
+    .arg("http://127.0.0.1:4545/cli/tests/")
     .arg("--allow-net")
     .arg("--allow-read")
     .arg("--unstable")
@@ -2548,6 +2550,23 @@ itest!(_067_test_no_run_type_error {
   exit_code: 1,
 });
 
+itest!(_070_location {
+  args: "run --location https://foo/bar?baz#bat 070_location.ts",
+  output: "070_location.ts.out",
+});
+
+itest!(_071_location_unset {
+  args: "run 071_location_unset.ts",
+  output: "071_location_unset.ts.out",
+  exit_code: 1,
+});
+
+itest!(_072_location_relative_fetch {
+  args: "run --location http://127.0.0.1:4545/cli/tests/ --allow-net 072_location_relative_fetch.ts",
+  output: "072_location_relative_fetch.ts.out",
+  http_server: true,
+});
+
 itest!(_073_worker_error {
   args: "run -A 073_worker_error.ts",
   output: "073_worker_error.ts.out",
@@ -2570,6 +2589,12 @@ itest!(_076_info_json_deps_order {
   output: "076_info_json_deps_order.out",
 });
 
+itest!(_077_fetch_empty {
+  args: "run -A 077_fetch_empty.ts",
+  output: "077_fetch_empty.ts.out",
+  exit_code: 1,
+});
+
 itest!(js_import_detect {
   args: "run --quiet --reload js_import_detect.ts",
   output: "js_import_detect.ts.out",
@@ -5200,16 +5225,14 @@ fn web_platform_tests() {
           .tempfile()
           .unwrap();
 
-        let bundle = concat_bundle(
-          files,
-          file.path(),
-          format!("window.location = {{search: \"{}\"}};\n", variant),
-        );
+        let bundle = concat_bundle(files, file.path(), "".to_string());
         file.write_all(bundle.as_bytes()).unwrap();
 
         let child = util::deno_cmd()
           .current_dir(test_file_path.parent().unwrap())
           .arg("run")
+          .arg("--location")
+          .arg(&format!("http://web-platform-tests/?{}", variant))
           .arg("-A")
           .arg(file.path())
           .arg(deno_core::serde_json::to_string(&expect_fail).unwrap())
diff --git a/cli/tests/subdir/worker_location.ts b/cli/tests/subdir/worker_location.ts
new file mode 100644
index 0000000000..4800323501
--- /dev/null
+++ b/cli/tests/subdir/worker_location.ts
@@ -0,0 +1,4 @@
+onmessage = function (): void {
+  postMessage(self.location.href);
+  close();
+};
diff --git a/cli/tests/unit/fetch_test.ts b/cli/tests/unit/fetch_test.ts
index e5389d0240..6945b2e2a0 100644
--- a/cli/tests/unit/fetch_test.ts
+++ b/cli/tests/unit/fetch_test.ts
@@ -221,17 +221,6 @@ unitTest({ perms: { net: true } }, async function responseClone(): Promise<
   }
 });
 
-unitTest({ perms: { net: true } }, async function fetchEmptyInvalid(): Promise<
-  void
-> {
-  await assertThrowsAsync(
-    async () => {
-      await fetch("");
-    },
-    URIError,
-  );
-});
-
 unitTest(
   { perms: { net: true } },
   async function fetchMultipartFormDataSuccess(): Promise<void> {
diff --git a/cli/tests/unit/request_test.ts b/cli/tests/unit/request_test.ts
index 8132e01846..da6a0e15bb 100644
--- a/cli/tests/unit/request_test.ts
+++ b/cli/tests/unit/request_test.ts
@@ -1,5 +1,5 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-import { assert, assertEquals, assertThrows, unitTest } from "./test_util.ts";
+import { assert, assertEquals, unitTest } from "./test_util.ts";
 
 unitTest(function fromInit(): void {
   const req = new Request("http://foo/", {
@@ -46,8 +46,10 @@ unitTest(function methodNonString(): void {
 });
 
 unitTest(function requestRelativeUrl(): void {
-  // TODO(nayeemrmn): Base from `--location` when implemented and set.
-  assertThrows(() => new Request("relative-url"), TypeError, "Invalid URL.");
+  assertEquals(
+    new Request("relative-url").url,
+    "http://js-unit-tests/foo/relative-url",
+  );
 });
 
 unitTest(async function cloneRequestBodyStream(): Promise<void> {
diff --git a/cli/tests/unit/unit_test_runner.ts b/cli/tests/unit/unit_test_runner.ts
index 35a691ebde..1f347ec9a3 100755
--- a/cli/tests/unit/unit_test_runner.ts
+++ b/cli/tests/unit/unit_test_runner.ts
@@ -97,6 +97,7 @@ function spawnWorkerRunner(
     Deno.execPath(),
     "run",
     "--unstable", // TODO(ry) be able to test stable vs unstable
+    "--location=http://js-unit-tests/foo/bar",
     "-A",
     "cli/tests/unit/unit_test_runner.ts",
     "--worker",
diff --git a/cli/tests/workers_test.ts b/cli/tests/workers_test.ts
index c35ea72f5f..9cbc864bd6 100644
--- a/cli/tests/workers_test.ts
+++ b/cli/tests/workers_test.ts
@@ -614,3 +614,41 @@ Deno.test("Worker with disabled permissions", async function () {
   await promise;
   worker.terminate();
 });
+
+Deno.test({
+  name: "worker location",
+  fn: async function (): Promise<void> {
+    const promise = deferred();
+    const workerModuleHref =
+      new URL("subdir/worker_location.ts", import.meta.url).href;
+    const w = new Worker(workerModuleHref, { type: "module" });
+    w.onmessage = (e): void => {
+      assertEquals(e.data, workerModuleHref);
+      promise.resolve();
+    };
+    w.postMessage("Hello, world!");
+    await promise;
+    w.terminate();
+  },
+});
+
+Deno.test({
+  name: "worker with relative specifier",
+  fn: async function (): Promise<void> {
+    // TODO(nayeemrmn): Add `Location` and `location` to `dlint`'s globals.
+    // deno-lint-ignore no-undef
+    assertEquals(location.href, "http://127.0.0.1:4545/cli/tests/");
+    const promise = deferred();
+    const w = new Worker(
+      "./workers/test_worker.ts",
+      { type: "module", name: "tsWorker" },
+    );
+    w.onmessage = (e): void => {
+      assertEquals(e.data, "Hello, world!");
+      promise.resolve();
+    };
+    w.postMessage("Hello, world!");
+    await promise;
+    w.terminate();
+  },
+});
diff --git a/cli/tools/installer.rs b/cli/tools/installer.rs
index f6eb331120..e047631722 100644
--- a/cli/tools/installer.rs
+++ b/cli/tools/installer.rs
@@ -202,6 +202,10 @@ pub fn install(
 
   let mut executable_args = vec!["run".to_string()];
   executable_args.extend_from_slice(&flags.to_permission_args());
+  if let Some(url) = flags.location.as_ref() {
+    executable_args.push("--location".to_string());
+    executable_args.push(url.to_string());
+  }
   if let Some(ca_file) = flags.ca_file {
     executable_args.push("--cert".to_string());
     executable_args.push(ca_file)
diff --git a/docs/runtime/location_api.md b/docs/runtime/location_api.md
new file mode 100644
index 0000000000..6e73418285
--- /dev/null
+++ b/docs/runtime/location_api.md
@@ -0,0 +1,76 @@
+## Location API
+
+Deno supports the
+[`location`](https://developer.mozilla.org/en-US/docs/Web/API/Window/location)
+global from the web. Please read on.
+
+### Location flag
+
+There is no "web page" whose URL we can use for a location in a Deno process. We
+instead allow users to emulate a document location by specifying one on the CLI
+using the `--location` flag. It can be a `http` or `https` URL.
+
+```ts
+// deno run --location https://example.com/path main.ts
+
+console.log(location.href);
+// "https://example.com/path"
+```
+
+You must pass `--location <href>` for this to work. If you don't, any access to
+the `location` global will throw an error.
+
+```ts
+// deno run main.ts
+
+console.log(location.href);
+// error: Uncaught ReferenceError: Access to "location", run again with --location <href>.
+```
+
+Setting `location` or any of its fields will normally cause navigation in
+browsers. This is not applicable in Deno, so it will throw in this situation.
+
+```ts
+// deno run --location https://example.com/path main.ts
+
+location.pathname = "./foo";
+// error: Uncaught NotSupportedError: Cannot set "location.pathname".
+```
+
+### Extended usage
+
+On the web, resource resolution (excluding modules) typically uses the value of
+`location.href` as the root on which to base any relative URLs. This affects
+some web APIs adopted by Deno.
+
+#### Fetch API
+
+```ts
+// deno run --location https://api.github.com/ --allow-net main.ts
+
+const response = await fetch("./orgs/denoland");
+// Fetches "https://api.github.com/orgs/denoland".
+```
+
+The `fetch()` call above would throw if the `--location` flag was not passed,
+since there is no web-analogous location to base it onto.
+
+#### Worker modules
+
+```ts
+// deno run --location https://example.com/index.html --allow-net main.ts
+
+const worker = new Worker("./workers/hello.ts", { type: "module" });
+// Fetches worker module at "https://example.com/workers/hello.ts".
+```
+
+### Only use if necessary
+
+For the above use cases, it is preferable to pass URLs in full rather than
+relying on `--location`. You can manually base a relative URL using the `URL`
+constructor if needed.
+
+The `--location` flag is intended for those who have some specific purpose in
+mind for emulating a document location and are aware that this will only work at
+application-level. However, you may also use it to silence errors from a
+dependency which is frivolously accessing the `location` global.
diff --git a/docs/runtime/workers.md b/docs/runtime/workers.md
index 14e028705e..82e1e5b2db 100644
--- a/docs/runtime/workers.md
+++ b/docs/runtime/workers.md
@@ -9,10 +9,11 @@ is run on a separate thread, dedicated only to that worker.
 Currently Deno supports only `module` type workers; thus it's essential to pass
 the `type: "module"` option when creating a new worker.
 
-Relative module specifiers are
-[not supported](https://github.com/denoland/deno/issues/5216) at the moment. You
-can instead use the `URL` constructor and `import.meta.url` to easily create a
-specifier for some nearby script.
+Use of relative module specifiers in the main worker are only supported with
+`--location <href>` passed on the CLI. This is not recommended for portability.
+You can instead use the `URL` contructor and `import.meta.url` to easily create
+a specifier for some nearby script. Dedicated workers, however, have a location
+and this capability by default.
 
 ```ts
 // Good
diff --git a/docs/toc.json b/docs/toc.json
index df2c004c5d..6d1896999c 100644
--- a/docs/toc.json
+++ b/docs/toc.json
@@ -23,6 +23,7 @@
       "permission_apis": "Permission APIs",
       "compiler_apis": "Compiler APIs",
       "web_platform_apis": "Web Platform APIs",
+      "location_api": "Location API",
       "workers": "Workers"
     }
   },
diff --git a/op_crates/fetch/26_fetch.js b/op_crates/fetch/26_fetch.js
index 379c88e2fc..0d405d4ec6 100644
--- a/op_crates/fetch/26_fetch.js
+++ b/op_crates/fetch/26_fetch.js
@@ -5,6 +5,7 @@
 
   // provided by "deno_web"
   const { URLSearchParams } = window.__bootstrap.url;
+  const { getLocationHref } = window.__bootstrap.location;
 
   const { requiredArguments } = window.__bootstrap.fetchUtil;
   const { ReadableStream, isReadableStreamDisturbed } =
@@ -987,8 +988,10 @@
         this.credentials = input.credentials;
         this._stream = input._stream;
       } else {
-        // TODO(nayeemrmn): Base from `--location` when implemented and set.
-        this.url = new URL(String(input)).href;
+        const baseUrl = getLocationHref();
+        this.url = baseUrl != null
+          ? new URL(String(input), baseUrl).href
+          : new URL(String(input)).href;
       }
 
       if (init && "method" in init && init.method) {
@@ -1175,20 +1178,25 @@
     }
   }
 
+  let baseUrl = null;
+
+  function setBaseUrl(href) {
+    baseUrl = href;
+  }
+
   function sendFetchReq(url, method, headers, body, clientRid) {
     let headerArray = [];
     if (headers) {
       headerArray = Array.from(headers.entries());
     }
 
-    const args = {
+    return opFetch({
       method,
       url,
+      baseUrl,
       headers: headerArray,
       clientRid,
-    };
-
-    return opFetch(args, body);
+    }, body);
   }
 
   async function fetch(input, init) {
@@ -1385,6 +1393,7 @@
     Blob,
     DomFile,
     FormData,
+    setBaseUrl,
     fetch,
     Request,
     Response,
diff --git a/op_crates/fetch/lib.rs b/op_crates/fetch/lib.rs
index 91e44f75c2..c2e458d89b 100644
--- a/op_crates/fetch/lib.rs
+++ b/op_crates/fetch/lib.rs
@@ -100,12 +100,12 @@ where
   struct FetchArgs {
     method: Option<String>,
     url: String,
+    base_url: Option<String>,
     headers: Vec<(String, String)>,
     client_rid: Option<u32>,
   }
 
   let args: FetchArgs = serde_json::from_value(args)?;
-  let url = args.url;
 
   let client = if let Some(rid) = args.client_rid {
     let state_ = state.borrow();
@@ -125,10 +125,16 @@ where
     None => Method::GET,
   };
 
-  let url_ = Url::parse(&url)?;
+  let base_url = match args.base_url {
+    Some(base_url) => Some(Url::parse(&base_url)?),
+    _ => None,
+  };
+  let url = Url::options()
+    .base_url(base_url.as_ref())
+    .parse(&args.url)?;
 
   // Check scheme before asking for net permission
-  let scheme = url_.scheme();
+  let scheme = url.scheme();
   if scheme != "http" && scheme != "https" {
     return Err(type_error(format!("scheme '{}' not supported", scheme)));
   }
@@ -136,10 +142,10 @@ where
   {
     let state_ = state.borrow();
     let permissions = state_.borrow::<FP>();
-    permissions.check_net_url(&url_)?;
+    permissions.check_net_url(&url)?;
   }
 
-  let mut request = client.request(method, url_);
+  let mut request = client.request(method, url);
 
   match data.len() {
     0 => {}
diff --git a/op_crates/web/12_location.js b/op_crates/web/12_location.js
new file mode 100644
index 0000000000..d56ccc1e4d
--- /dev/null
+++ b/op_crates/web/12_location.js
@@ -0,0 +1,227 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+
+((window) => {
+  const { URL } = window.__bootstrap.url;
+  const locationConstructorKey = Symbol("locationConstuctorKey");
+
+  class Location {
+    constructor(href, key) {
+      if (key != locationConstructorKey) {
+        throw new TypeError("Illegal constructor.");
+      }
+      const url = new URL(href);
+      Object.defineProperties(this, {
+        hash: {
+          get() {
+            return url.hash;
+          },
+          set() {
+            throw new DOMException(
+              `Cannot set "location.hash".`,
+              "NotSupportedError",
+            );
+          },
+          enumerable: true,
+        },
+        host: {
+          get() {
+            return url.host;
+          },
+          set() {
+            throw new DOMException(
+              `Cannot set "location.host".`,
+              "NotSupportedError",
+            );
+          },
+          enumerable: true,
+        },
+        hostname: {
+          get() {
+            return url.hostname;
+          },
+          set() {
+            throw new DOMException(
+              `Cannot set "location.hostname".`,
+              "NotSupportedError",
+            );
+          },
+          enumerable: true,
+        },
+        href: {
+          get() {
+            return href;
+          },
+          set() {
+            throw new DOMException(
+              `Cannot set "location.href".`,
+              "NotSupportedError",
+            );
+          },
+          enumerable: true,
+        },
+        origin: {
+          get() {
+            return url.origin;
+          },
+          enumerable: true,
+        },
+        password: {
+          get() {
+            return url.password;
+          },
+          set() {
+            throw new DOMException(
+              `Cannot set "location.password".`,
+              "NotSupportedError",
+            );
+          },
+          enumerable: true,
+        },
+        pathname: {
+          get() {
+            return url.pathname;
+          },
+          set() {
+            throw new DOMException(
+              `Cannot set "location.pathname".`,
+              "NotSupportedError",
+            );
+          },
+          enumerable: true,
+        },
+        port: {
+          get() {
+            return url.port;
+          },
+          set() {
+            throw new DOMException(
+              `Cannot set "location.port".`,
+              "NotSupportedError",
+            );
+          },
+          enumerable: true,
+        },
+        protocol: {
+          get() {
+            return url.protocol;
+          },
+          set() {
+            throw new DOMException(
+              `Cannot set "location.protocol".`,
+              "NotSupportedError",
+            );
+          },
+          enumerable: true,
+        },
+        search: {
+          get() {
+            return url.search;
+          },
+          set() {
+            throw new DOMException(
+              `Cannot set "location.search".`,
+              "NotSupportedError",
+            );
+          },
+          enumerable: true,
+        },
+        username: {
+          get() {
+            return url.username;
+          },
+          set() {
+            throw new DOMException(
+              `Cannot set "location.username".`,
+              "NotSupportedError",
+            );
+          },
+          enumerable: true,
+        },
+        ancestorOrigins: {
+          get() {
+            // TODO(nayeemrmn): Replace with a `DOMStringList` instance.
+            return {
+              length: 0,
+              item: () => null,
+              contains: () => false,
+            };
+          },
+          enumerable: true,
+        },
+        assign: {
+          value: function assign() {
+            throw new DOMException(
+              `Cannot call "location.assign()".`,
+              "NotSupportedError",
+            );
+          },
+          enumerable: true,
+        },
+        reload: {
+          value: function reload() {
+            throw new DOMException(
+              `Cannot call "location.reload()".`,
+              "NotSupportedError",
+            );
+          },
+          enumerable: true,
+        },
+        replace: {
+          value: function replace() {
+            throw new DOMException(
+              `Cannot call "location.replace()".`,
+              "NotSupportedError",
+            );
+          },
+          enumerable: true,
+        },
+        toString: {
+          value: function toString() {
+            return href;
+          },
+          enumerable: true,
+        },
+      });
+    }
+  }
+
+  Object.defineProperties(Location.prototype, {
+    [Symbol.toStringTag]: {
+      value: "Location",
+      configurable: true,
+    },
+  });
+
+  let location = null;
+
+  function setLocationHref(href) {
+    location = new Location(href, locationConstructorKey);
+  }
+
+  window.__bootstrap = (window.__bootstrap || {});
+  window.__bootstrap.location = {
+    locationConstructorDescriptor: {
+      value: Location,
+      configurable: true,
+      writable: true,
+    },
+    locationDescriptor: {
+      get() {
+        if (location == null) {
+          throw new ReferenceError(
+            `Access to "location", run again with --location <href>.`,
+          );
+        }
+        return location;
+      },
+      set() {
+        throw new DOMException(`Cannot set "location".`, "NotSupportedError");
+      },
+      enumerable: true,
+    },
+    setLocationHref,
+    getLocationHref() {
+      return location?.href;
+    },
+  };
+})(this);
diff --git a/op_crates/web/lib.deno_web.d.ts b/op_crates/web/lib.deno_web.d.ts
index 33d8677530..491a0ee842 100644
--- a/op_crates/web/lib.deno_web.d.ts
+++ b/op_crates/web/lib.deno_web.d.ts
@@ -312,3 +312,69 @@ declare var FileReader: {
   readonly EMPTY: number;
   readonly LOADING: number;
 };
+
+/** The location (URL) of the object it is linked to. Changes done on it are
+ * reflected on the object it relates to. Accessible via
+ * `globalThis.location`. */
+declare class Location {
+  constructor();
+  /** Returns a DOMStringList object listing the origins of the ancestor
+   * browsing contexts, from the parent browsing context to the top-level
+   * browsing context.
+   *
+   * Always empty in Deno. */
+  readonly ancestorOrigins: DOMStringList;
+  /** Returns the Location object's URL's fragment (includes leading "#" if non-empty).
+   *
+   * Cannot be set in Deno. */
+  hash: string;
+  /** Returns the Location object's URL's host and port (if different from the default port for the scheme).
+   *
+   * Cannot be set in Deno. */
+  host: string;
+  /** Returns the Location object's URL's host.
+   *
+   * Cannot be set in Deno. */
+  hostname: string;
+  /** Returns the Location object's URL.
+   *
+   * Cannot be set in Deno. */
+  href: string;
+  toString(): string;
+  /** Returns the Location object's URL's origin. */
+  readonly origin: string;
+  /** Returns the Location object's URL's path.
+   *
+   * Cannot be set in Deno. */
+  pathname: string;
+  /** Returns the Location object's URL's port.
+   *
+   * Cannot be set in Deno. */
+  port: string;
+  /** Returns the Location object's URL's scheme.
+   *
+   * Cannot be set in Deno. */
+  protocol: string;
+  /** Returns the Location object's URL's query (includes leading "?" if
+   * non-empty).
+   *
+   * Cannot be set in Deno. */
+  search: string;
+  /** Navigates to the given URL.
+   *
+   * Cannot be set in Deno. */
+  assign(url: string): void;
+  /** Reloads the current page.
+   *
+   * Disabled in Deno. */
+  reload(): void;
+  /** @deprecated */
+  reload(forcedReload: boolean): void;
+  /** Removes the current page from the session history and navigates to the
+   * given URL.
+   *
+   * Disabled in Deno. */
+  replace(url: string): void;
+}
+
+declare var location: Location;
diff --git a/op_crates/web/lib.rs b/op_crates/web/lib.rs
index 958d111772..33bb0a33f4 100644
--- a/op_crates/web/lib.rs
+++ b/op_crates/web/lib.rs
@@ -61,6 +61,10 @@ pub fn init(isolate: &mut JsRuntime) {
       include_str!("08_text_encoding.js"),
     ),
     ("deno:op_crates/web/11_url.js", include_str!("11_url.js")),
+    (
+      "deno:op_crates/web/12_location.js",
+      include_str!("12_location.js"),
+    ),
     (
       "deno:op_crates/web/21_filereader.js",
       include_str!("21_filereader.js"),
diff --git a/runtime/examples/hello_runtime.rs b/runtime/examples/hello_runtime.rs
index c93bbc90b1..829b2d36ca 100644
--- a/runtime/examples/hello_runtime.rs
+++ b/runtime/examples/hello_runtime.rs
@@ -39,6 +39,7 @@ async fn main() -> Result<(), AnyError> {
     ts_version: "x".to_string(),
     no_color: false,
     get_error_class_fn: Some(&get_error_class_name),
+    location: None,
   };
 
   let js_path =
diff --git a/runtime/js/11_workers.js b/runtime/js/11_workers.js
index 4989cd4b50..57f4207289 100644
--- a/runtime/js/11_workers.js
+++ b/runtime/js/11_workers.js
@@ -3,6 +3,7 @@
 ((window) => {
   const core = window.Deno.core;
   const { Window } = window.__bootstrap.globalInterfaces;
+  const { getLocationHref } = window.__bootstrap.location;
   const { log, pathFromURL } = window.__bootstrap.util;
   const { defineEventHandler } = window.__bootstrap.webUtil;
   const build = window.__bootstrap.build.build;
@@ -127,6 +128,7 @@
 
     constructor(specifier, options = {}) {
       super();
+      specifier = String(specifier);
       const {
         deno = {},
         name = "unknown",
@@ -177,6 +179,16 @@
       const hasSourceCode = false;
       const sourceCode = decoder.decode(new Uint8Array());
 
+      if (
+        specifier.startsWith("./") || specifier.startsWith("../") ||
+        specifier.startsWith("/") || type == "classic"
+      ) {
+        const baseUrl = getLocationHref();
+        if (baseUrl != null) {
+          specifier = new URL(specifier, baseUrl).href;
+        }
+      }
+
       const { id } = createWorker(
         specifier,
         hasSourceCode,
diff --git a/runtime/js/99_main.js b/runtime/js/99_main.js
index f38d51936a..284bef48c8 100644
--- a/runtime/js/99_main.js
+++ b/runtime/js/99_main.js
@@ -9,6 +9,7 @@ delete Object.prototype.__proto__;
   const util = window.__bootstrap.util;
   const eventTarget = window.__bootstrap.eventTarget;
   const globalInterfaces = window.__bootstrap.globalInterfaces;
+  const location = window.__bootstrap.location;
   const dispatchMinimal = window.__bootstrap.dispatchMinimal;
   const build = window.__bootstrap.build;
   const version = window.__bootstrap.version;
@@ -196,6 +197,8 @@ delete Object.prototype.__proto__;
 
   // https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope
   const windowOrWorkerGlobalScope = {
+    Location: location.locationConstructorDescriptor,
+    location: location.locationDescriptor,
     Blob: util.nonEnumerable(fetch.Blob),
     ByteLengthQueuingStrategy: util.nonEnumerable(
       streams.ByteLengthQueuingStrategy,
@@ -290,7 +293,19 @@ delete Object.prototype.__proto__;
     defineEventHandler(window, "unload", null);
 
     runtimeStart(runtimeOptions);
-    const { args, noColor, pid, ppid, unstableFlag } = runtimeOptions;
+    const {
+      args,
+      location: locationHref,
+      noColor,
+      pid,
+      ppid,
+      unstableFlag,
+    } = runtimeOptions;
+
+    if (locationHref != null) {
+      location.setLocationHref(locationHref);
+      fetch.setBaseUrl(locationHref);
+    }
 
     registerErrors();
 
@@ -349,8 +364,11 @@ delete Object.prototype.__proto__;
       runtimeOptions,
       internalName ?? name,
     );
-    const { unstableFlag, pid, noColor, args } = runtimeOptions;
+    const { unstableFlag, pid, noColor, args, location: locationHref } =
+      runtimeOptions;
 
+    location.setLocationHref(locationHref);
+    fetch.setBaseUrl(locationHref);
     registerErrors();
 
     const finalDenoNs = {
diff --git a/runtime/js/README.md b/runtime/js/README.md
index b17fa22e56..7e3fe4345e 100644
--- a/runtime/js/README.md
+++ b/runtime/js/README.md
@@ -38,6 +38,8 @@ Some Web APIs are using ops under the hood, eg. `console`, `performance`.
   [Body](https://developer.mozilla.org/en-US/docs/Web/API/Body) and
   [Headers](https://developer.mozilla.org/en-US/docs/Web/API/Headers): modern
   Promise-based HTTP Request API.
+- [location](https://developer.mozilla.org/en-US/docs/Web/API/Window/location)
+  and [Location](https://developer.mozilla.org/en-US/docs/Web/API/Location).
 - [FormData](https://developer.mozilla.org/en-US/docs/Web/API/FormData): access
   to a `multipart/form-data` serialization.
 - [Performance](https://developer.mozilla.org/en-US/docs/Web/API/Performance):
diff --git a/runtime/web_worker.rs b/runtime/web_worker.rs
index 313c711773..3a1f5316c1 100644
--- a/runtime/web_worker.rs
+++ b/runtime/web_worker.rs
@@ -130,6 +130,7 @@ pub struct WebWorker {
   terminate_rx: mpsc::Receiver<()>,
   handle: WebWorkerHandle,
   pub use_deno_namespace: bool,
+  pub main_module: ModuleSpecifier,
 }
 
 pub struct WebWorkerOptions {
@@ -197,6 +198,7 @@ impl WebWorker {
       terminate_rx,
       handle,
       use_deno_namespace: options.use_deno_namespace,
+      main_module: main_module.clone(),
     };
 
     {
@@ -286,6 +288,7 @@ impl WebWorker {
       "tsVersion": options.ts_version,
       "unstableFlag": options.unstable,
       "v8Version": deno_core::v8_version(),
+      "location": self.main_module,
     });
 
     let runtime_options_str =
diff --git a/runtime/worker.rs b/runtime/worker.rs
index 9326d632e2..6ebb2fb36f 100644
--- a/runtime/worker.rs
+++ b/runtime/worker.rs
@@ -63,6 +63,7 @@ pub struct WorkerOptions {
   /// Sets `Deno.noColor` in JS runtime.
   pub no_color: bool,
   pub get_error_class_fn: Option<GetErrorClassFn>,
+  pub location: Option<Url>,
 }
 
 impl MainWorker {
@@ -179,6 +180,7 @@ impl MainWorker {
       "tsVersion": options.ts_version,
       "unstableFlag": options.unstable,
       "v8Version": deno_core::v8_version(),
+      "location": options.location,
     });
 
     let script = format!(
@@ -282,6 +284,7 @@ mod tests {
       ts_version: "x".to_string(),
       no_color: true,
       get_error_class_fn: None,
+      location: None,
     };
 
     MainWorker::from_options(main_module, permissions, &options)