diff --git a/cli/args/config_file.rs b/cli/args/config_file.rs
index 76b522a41a..1928d02fb4 100644
--- a/cli/args/config_file.rs
+++ b/cli/args/config_file.rs
@@ -32,6 +32,16 @@ pub type MaybeImportsResult =
 pub struct JsxImportSourceConfig {
   pub default_specifier: Option<String>,
   pub module: String,
+  pub base_url: ModuleSpecifier,
+}
+
+impl JsxImportSourceConfig {
+  pub fn maybe_specifier_text(&self) -> Option<String> {
+    self
+      .default_specifier
+      .as_ref()
+      .map(|default_specifier| format!("{}/{}", default_specifier, self.module))
+  }
 }
 
 /// The transpile options that are significant out of a user provided tsconfig
@@ -1035,6 +1045,7 @@ impl ConfigFile {
     module.map(|module| JsxImportSourceConfig {
       default_specifier: compiler_options.jsx_import_source,
       module,
+      base_url: self.specifier.clone(),
     })
   }
 
diff --git a/cli/tools/vendor/build.rs b/cli/tools/vendor/build.rs
index 5cd50836f1..3e5f13d81e 100644
--- a/cli/tools/vendor/build.rs
+++ b/cli/tools/vendor/build.rs
@@ -9,6 +9,7 @@ use deno_ast::ModuleSpecifier;
 use deno_core::anyhow::bail;
 use deno_core::anyhow::Context;
 use deno_core::error::AnyError;
+use deno_core::futures::future::LocalBoxFuture;
 use deno_core::parking_lot::Mutex;
 use deno_graph::EsmModule;
 use deno_graph::Module;
@@ -21,6 +22,7 @@ use crate::args::Lockfile;
 use crate::cache::ParsedSourceCache;
 use crate::graph_util;
 use crate::graph_util::graph_lock_or_exit;
+use crate::tools::vendor::import_map::BuildImportMapInput;
 
 use super::analyze::has_default_export;
 use super::import_map::build_import_map;
@@ -57,16 +59,47 @@ impl VendorEnvironment for RealVendorEnvironment {
   }
 }
 
+type BuildGraphFuture = LocalBoxFuture<'static, Result<ModuleGraph, AnyError>>;
+
+pub struct BuildInput<
+  'a,
+  TBuildGraphFn: FnOnce(Vec<ModuleSpecifier>) -> BuildGraphFuture,
+  TEnvironment: VendorEnvironment,
+> {
+  pub entry_points: Vec<ModuleSpecifier>,
+  pub build_graph: TBuildGraphFn,
+  pub parsed_source_cache: &'a ParsedSourceCache,
+  pub output_dir: &'a Path,
+  pub maybe_original_import_map: Option<&'a ImportMap>,
+  pub maybe_lockfile: Option<Arc<Mutex<Lockfile>>>,
+  pub maybe_jsx_import_source: Option<&'a JsxImportSourceConfig>,
+  pub resolver: &'a dyn deno_graph::source::Resolver,
+  pub environment: &'a TEnvironment,
+}
+
+pub struct BuildOutput {
+  pub vendored_count: usize,
+  pub graph: ModuleGraph,
+}
+
 /// Vendors remote modules and returns how many were vendored.
-pub fn build(
-  graph: ModuleGraph,
-  parsed_source_cache: &ParsedSourceCache,
-  output_dir: &Path,
-  original_import_map: Option<&ImportMap>,
-  maybe_lockfile: Option<Arc<Mutex<Lockfile>>>,
-  jsx_import_source: Option<&JsxImportSourceConfig>,
-  environment: &impl VendorEnvironment,
-) -> Result<usize, AnyError> {
+pub async fn build<
+  TBuildGraphFn: FnOnce(Vec<ModuleSpecifier>) -> BuildGraphFuture,
+  TEnvironment: VendorEnvironment,
+>(
+  input: BuildInput<'_, TBuildGraphFn, TEnvironment>,
+) -> Result<BuildOutput, AnyError> {
+  let BuildInput {
+    mut entry_points,
+    build_graph,
+    parsed_source_cache,
+    output_dir,
+    maybe_original_import_map: original_import_map,
+    maybe_lockfile,
+    maybe_jsx_import_source: jsx_import_source,
+    resolver,
+    environment,
+  } = input;
   assert!(output_dir.is_absolute());
   let output_dir_specifier =
     ModuleSpecifier::from_directory_path(output_dir).unwrap();
@@ -75,6 +108,19 @@ pub fn build(
     validate_original_import_map(original_im, &output_dir_specifier)?;
   }
 
+  // add the jsx import source to the entry points to ensure it is always vendored
+  if let Some(jsx_import_source) = jsx_import_source {
+    if let Some(specifier_text) = jsx_import_source.maybe_specifier_text() {
+      if let Ok(specifier) =
+        resolver.resolve(&specifier_text, &jsx_import_source.base_url)
+      {
+        entry_points.push(specifier);
+      }
+    }
+  }
+
+  let graph = build_graph(entry_points).await?;
+
   // check the lockfile
   if let Some(lockfile) = maybe_lockfile {
     graph_lock_or_exit(&graph, &mut lockfile.lock());
@@ -130,19 +176,23 @@ pub fn build(
   // create the import map if necessary
   if !remote_modules.is_empty() {
     let import_map_path = output_dir.join("import_map.json");
-    let import_map_text = build_import_map(
-      &output_dir_specifier,
-      &graph,
-      &all_modules,
-      &mappings,
+    let import_map_text = build_import_map(BuildImportMapInput {
+      base_dir: &output_dir_specifier,
+      graph: &graph,
+      modules: &all_modules,
+      mappings: &mappings,
       original_import_map,
       jsx_import_source,
+      resolver,
       parsed_source_cache,
-    )?;
+    })?;
     environment.write_file(&import_map_path, &import_map_text)?;
   }
 
-  Ok(remote_modules.len())
+  Ok(BuildOutput {
+    vendored_count: remote_modules.len(),
+    graph,
+  })
 }
 
 fn validate_original_import_map(
@@ -1152,12 +1202,13 @@ mod test {
   }
 
   #[tokio::test]
-  async fn existing_import_map_jsx_import_source() {
+  async fn existing_import_map_jsx_import_source_jsx_files() {
     let mut builder = VendorTestBuilder::default();
     builder.add_entry_point("/mod.tsx");
     builder.set_jsx_import_source_config(JsxImportSourceConfig {
       default_specifier: Some("preact".to_string()),
       module: "jsx-runtime".to_string(),
+      base_url: builder.resolve_to_url("/deno.json"),
     });
     let mut original_import_map = builder.new_import_map("/import_map.json");
     let imports = original_import_map.imports_mut();
@@ -1199,6 +1250,59 @@ mod test {
     );
   }
 
+  #[tokio::test]
+  async fn existing_import_map_jsx_import_source_no_jsx_files() {
+    let mut builder = VendorTestBuilder::default();
+    builder.add_entry_point("/mod.ts");
+    builder.set_jsx_import_source_config(JsxImportSourceConfig {
+      default_specifier: Some("preact".to_string()),
+      module: "jsx-runtime".to_string(),
+      base_url: builder.resolve_to_url("/deno.json"),
+    });
+    let mut original_import_map = builder.new_import_map("/import_map.json");
+    let imports = original_import_map.imports_mut();
+    imports
+      .append(
+        "preact/".to_string(),
+        "https://localhost/preact/".to_string(),
+      )
+      .unwrap();
+    let output = builder
+      .with_loader(|loader| {
+        loader.add("/mod.ts", "import 'https://localhost/mod.ts';");
+        loader.add("https://localhost/mod.ts", "console.log(1)");
+        loader.add_with_headers(
+          "https://localhost/preact/jsx-runtime",
+          "export function stuff() {}",
+          &[("content-type", "application/typescript")],
+        );
+      })
+      .set_original_import_map(original_import_map)
+      .build()
+      .await
+      .unwrap();
+
+    assert_eq!(
+      output.import_map,
+      Some(json!({
+        "imports": {
+          "https://localhost/": "./localhost/",
+          "preact/jsx-runtime": "./localhost/preact/jsx-runtime.ts"
+        },
+      }))
+    );
+    assert_eq!(
+      output.files,
+      to_file_vec(&[
+        ("/vendor/localhost/mod.ts", "console.log(1)"),
+        (
+          "/vendor/localhost/preact/jsx-runtime.ts",
+          "export function stuff() {}"
+        ),
+      ]),
+    );
+  }
+
   #[tokio::test]
   async fn vendor_file_fails_loading_dynamic_import() {
     let mut builder = VendorTestBuilder::with_default_setup();
diff --git a/cli/tools/vendor/import_map.rs b/cli/tools/vendor/import_map.rs
index a23dde8051..36a70d4e00 100644
--- a/cli/tools/vendor/import_map.rs
+++ b/cli/tools/vendor/import_map.rs
@@ -177,15 +177,30 @@ impl<'a> ImportsBuilder<'a> {
   }
 }
 
+pub struct BuildImportMapInput<'a> {
+  pub base_dir: &'a ModuleSpecifier,
+  pub modules: &'a [&'a Module],
+  pub graph: &'a ModuleGraph,
+  pub mappings: &'a Mappings,
+  pub original_import_map: Option<&'a ImportMap>,
+  pub jsx_import_source: Option<&'a JsxImportSourceConfig>,
+  pub resolver: &'a dyn deno_graph::source::Resolver,
+  pub parsed_source_cache: &'a ParsedSourceCache,
+}
+
 pub fn build_import_map(
-  base_dir: &ModuleSpecifier,
-  graph: &ModuleGraph,
-  modules: &[&Module],
-  mappings: &Mappings,
-  original_import_map: Option<&ImportMap>,
-  jsx_import_source: Option<&JsxImportSourceConfig>,
-  parsed_source_cache: &ParsedSourceCache,
+  input: BuildImportMapInput<'_>,
 ) -> Result<String, AnyError> {
+  let BuildImportMapInput {
+    base_dir,
+    modules,
+    graph,
+    mappings,
+    original_import_map,
+    jsx_import_source,
+    resolver,
+    parsed_source_cache,
+  } = input;
   let mut builder = ImportMapBuilder::new(base_dir, mappings);
   visit_modules(graph, modules, mappings, &mut builder, parsed_source_cache)?;
 
@@ -196,14 +211,10 @@ pub fn build_import_map(
   }
 
   // add the jsx import source to the destination import map, if mapped in the original import map
-  if let (Some(import_map), Some(jsx_import_source)) =
-    (original_import_map, jsx_import_source)
-  {
-    if let Some(default_specifier) = &jsx_import_source.default_specifier {
-      let specifier_text =
-        format!("{}/{}", default_specifier, jsx_import_source.module);
+  if let Some(jsx_import_source) = jsx_import_source {
+    if let Some(specifier_text) = jsx_import_source.maybe_specifier_text() {
       if let Ok(resolved_url) =
-        import_map.resolve(&specifier_text, import_map.base_url())
+        resolver.resolve(&specifier_text, &jsx_import_source.base_url)
       {
         builder.imports.add(specifier_text, &resolved_url);
       }
diff --git a/cli/tools/vendor/mod.rs b/cli/tools/vendor/mod.rs
index 6a7096d68d..49a984c875 100644
--- a/cli/tools/vendor/mod.rs
+++ b/cli/tools/vendor/mod.rs
@@ -9,6 +9,7 @@ use deno_ast::TextChange;
 use deno_core::anyhow::bail;
 use deno_core::anyhow::Context;
 use deno_core::error::AnyError;
+use deno_core::futures::FutureExt;
 use deno_core::resolve_url_or_path;
 use deno_graph::GraphKind;
 use log::warn;
@@ -19,7 +20,6 @@ use crate::args::Flags;
 use crate::args::FmtOptionsConfig;
 use crate::args::VendorFlags;
 use crate::factory::CliFactory;
-use crate::graph_util::ModuleGraphBuilder;
 use crate::tools::fmt::format_json;
 use crate::util::fs::canonicalize_path;
 use crate::util::fs::resolve_from_cwd;
@@ -48,25 +48,35 @@ pub async fn vendor(
   validate_options(&mut cli_options, &output_dir)?;
   let factory = CliFactory::from_cli_options(Arc::new(cli_options));
   let cli_options = factory.cli_options();
-  let graph = create_graph(
-    factory.module_graph_builder().await?,
-    &vendor_flags,
-    cli_options.initial_cwd(),
-  )
+  let entry_points =
+    resolve_entry_points(&vendor_flags, cli_options.initial_cwd())?;
+  let jsx_import_source = cli_options.to_maybe_jsx_import_source_config();
+  let module_graph_builder = factory.module_graph_builder().await?.clone();
+  let output = build::build(build::BuildInput {
+    entry_points,
+    build_graph: move |entry_points| {
+      async move {
+        module_graph_builder
+          .create_graph(GraphKind::All, entry_points)
+          .await
+      }
+      .boxed_local()
+    },
+    parsed_source_cache: factory.parsed_source_cache()?,
+    output_dir: &output_dir,
+    maybe_original_import_map: factory.maybe_import_map().await?.as_deref(),
+    maybe_lockfile: factory.maybe_lockfile().clone(),
+    maybe_jsx_import_source: jsx_import_source.as_ref(),
+    resolver: factory.resolver().await?.as_graph_resolver(),
+    environment: &build::RealVendorEnvironment,
+  })
   .await?;
+
+  let vendored_count = output.vendored_count;
+  let graph = output.graph;
   let npm_package_count = graph.npm_packages.len();
   let try_add_node_modules_dir = npm_package_count > 0
     && cli_options.node_modules_dir_enablement().unwrap_or(true);
-  let jsx_import_source = cli_options.to_maybe_jsx_import_source_config();
-  let vendored_count = build::build(
-    graph,
-    factory.parsed_source_cache()?,
-    &output_dir,
-    factory.maybe_import_map().await?.as_deref(),
-    factory.maybe_lockfile().clone(),
-    jsx_import_source.as_ref(),
-    &build::RealVendorEnvironment,
-  )?;
 
   log::info!(
     concat!("Vendored {} {} into {} directory.",),
@@ -363,20 +373,15 @@ fn is_dir_empty(dir_path: &Path) -> Result<bool, AnyError> {
   }
 }
 
-async fn create_graph(
-  module_graph_builder: &ModuleGraphBuilder,
+fn resolve_entry_points(
   flags: &VendorFlags,
   initial_cwd: &Path,
-) -> Result<deno_graph::ModuleGraph, AnyError> {
-  let entry_points = flags
+) -> Result<Vec<ModuleSpecifier>, AnyError> {
+  flags
     .specifiers
     .iter()
-    .map(|p| resolve_url_or_path(p, initial_cwd))
-    .collect::<Result<Vec<_>, _>>()?;
-
-  module_graph_builder
-    .create_graph(GraphKind::All, entry_points)
-    .await
+    .map(|p| resolve_url_or_path(p, initial_cwd).map_err(|e| e.into()))
+    .collect::<Result<Vec<_>, _>>()
 }
 
 #[cfg(test)]
diff --git a/cli/tools/vendor/test.rs b/cli/tools/vendor/test.rs
index 4bc6941e29..0bf6f84f39 100644
--- a/cli/tools/vendor/test.rs
+++ b/cli/tools/vendor/test.rs
@@ -12,6 +12,7 @@ use deno_core::anyhow::anyhow;
 use deno_core::anyhow::bail;
 use deno_core::error::AnyError;
 use deno_core::futures;
+use deno_core::futures::FutureExt;
 use deno_core::serde_json;
 use deno_graph::source::LoadFuture;
 use deno_graph::source::LoadResponse;
@@ -195,8 +196,12 @@ impl VendorTestBuilder {
     builder
   }
 
+  pub fn resolve_to_url(&self, path: &str) -> ModuleSpecifier {
+    ModuleSpecifier::from_file_path(make_path(path)).unwrap()
+  }
+
   pub fn new_import_map(&self, base_path: &str) -> ImportMap {
-    let base = ModuleSpecifier::from_file_path(make_path(base_path)).unwrap();
+    let base = self.resolve_to_url(base_path);
     ImportMap::new(base)
   }
 
@@ -226,27 +231,42 @@ impl VendorTestBuilder {
 
   pub async fn build(&mut self) -> Result<VendorOutput, AnyError> {
     let output_dir = make_path("/vendor");
-    let roots = self.entry_points.clone();
+    let entry_points = self.entry_points.clone();
     let loader = self.loader.clone();
     let parsed_source_cache = ParsedSourceCache::new_in_memory();
     let analyzer = parsed_source_cache.as_analyzer();
-    let graph = build_test_graph(
-      roots,
+    let resolver = Arc::new(build_resolver(
       self.jsx_import_source_config.clone(),
       self.original_import_map.clone(),
-      loader,
-      &*analyzer,
-    )
-    .await;
-    super::build::build(
-      graph,
-      &parsed_source_cache,
-      &output_dir,
-      self.original_import_map.as_ref(),
-      None,
-      self.jsx_import_source_config.as_ref(),
-      &self.environment,
-    )?;
+    ));
+    super::build::build(super::build::BuildInput {
+      entry_points,
+      build_graph: {
+        let resolver = resolver.clone();
+        move |entry_points| {
+          async move {
+            Ok(
+              build_test_graph(
+                entry_points,
+                loader,
+                resolver.as_graph_resolver(),
+                &*analyzer,
+              )
+              .await,
+            )
+          }
+          .boxed_local()
+        }
+      },
+      parsed_source_cache: &parsed_source_cache,
+      output_dir: &output_dir,
+      maybe_original_import_map: self.original_import_map.as_ref(),
+      maybe_lockfile: None,
+      maybe_jsx_import_source: self.jsx_import_source_config.as_ref(),
+      resolver: resolver.as_graph_resolver(),
+      environment: &self.environment,
+    })
+    .await?;
 
     let mut files = self.environment.files.borrow_mut();
     let import_map = files.remove(&output_dir.join("import_map.json"));
@@ -269,37 +289,40 @@ impl VendorTestBuilder {
   }
 }
 
-async fn build_test_graph(
-  roots: Vec<ModuleSpecifier>,
+fn build_resolver(
   jsx_import_source_config: Option<JsxImportSourceConfig>,
   original_import_map: Option<ImportMap>,
+) -> CliGraphResolver {
+  let npm_registry_api = Arc::new(CliNpmRegistryApi::new_uninitialized());
+  let npm_resolution = Arc::new(NpmResolution::from_serialized(
+    npm_registry_api.clone(),
+    None,
+    None,
+  ));
+  CliGraphResolver::new(
+    jsx_import_source_config,
+    original_import_map.map(Arc::new),
+    false,
+    npm_registry_api,
+    npm_resolution,
+    Default::default(),
+    Default::default(),
+  )
+}
+
+async fn build_test_graph(
+  roots: Vec<ModuleSpecifier>,
   mut loader: TestLoader,
+  resolver: &dyn deno_graph::source::Resolver,
   analyzer: &dyn deno_graph::ModuleAnalyzer,
 ) -> ModuleGraph {
-  let resolver = original_import_map.map(|original_import_map| {
-    let npm_registry_api = Arc::new(CliNpmRegistryApi::new_uninitialized());
-    let npm_resolution = Arc::new(NpmResolution::from_serialized(
-      npm_registry_api.clone(),
-      None,
-      None,
-    ));
-    CliGraphResolver::new(
-      jsx_import_source_config,
-      Some(Arc::new(original_import_map)),
-      false,
-      npm_registry_api,
-      npm_resolution,
-      Default::default(),
-      Default::default(),
-    )
-  });
   let mut graph = ModuleGraph::new(GraphKind::All);
   graph
     .build(
       roots,
       &mut loader,
       deno_graph::BuildOptions {
-        resolver: resolver.as_ref().map(|r| r.as_graph_resolver()),
+        resolver: Some(resolver),
         module_analyzer: Some(analyzer),
         ..Default::default()
       },