2 files changed, 52 insertions, 0 deletions
diff --git a/cli/args/deno_json.rs b/cli/args/deno_json.rs
new file mode 100644
index 000000000..60ac5d58c
--- /dev/null
+++ b/cli/args/deno_json.rs
@@ -0,0 +1,51 @@
+// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
+
+use std::collections::HashSet;
+
+use deno_core::serde_json;
+use deno_semver::jsr::JsrDepPackageReq;
+use deno_semver::jsr::JsrPackageReqReference;
+use deno_semver::npm::NpmPackageReqReference;
+
+pub fn deno_json_deps(
+  config: &deno_config::ConfigFile,
+) -> HashSet<JsrDepPackageReq> {
+  let values = imports_values(config.json.imports.as_ref())
+    .into_iter()
+    .chain(scope_values(config.json.scopes.as_ref()));
+  values_to_set(values)
+}
+
+fn imports_values(value: Option<&serde_json::Value>) -> Vec<&String> {
+  let Some(obj) = value.and_then(|v| v.as_object()) else {
+    return Vec::new();
+  };
+  let mut items = Vec::with_capacity(obj.len());
+  for value in obj.values() {
+    if let serde_json::Value::String(value) = value {
+      items.push(value);
+    }
+  }
+  items
+}
+
+fn scope_values(value: Option<&serde_json::Value>) -> Vec<&String> {
+  let Some(obj) = value.and_then(|v| v.as_object()) else {
+    return Vec::new();
+  };
+  obj.values().flat_map(|v| imports_values(Some(v))).collect()
+}
+
+fn values_to_set<'a>(
+  values: impl Iterator<Item = &'a String>,
+) -> HashSet<JsrDepPackageReq> {
+  let mut entries = HashSet::new();
+  for value in values {
+    if let Ok(req_ref) = JsrPackageReqReference::from_str(value) {
+      entries.insert(JsrDepPackageReq::jsr(req_ref.into_inner().req));
+    } else if let Ok(req_ref) = NpmPackageReqReference::from_str(value) {
+      entries.insert(JsrDepPackageReq::npm(req_ref.into_inner().req));
+    }
+  }
+  entries
+}
diff --git a/cli/args/mod.rs b/cli/args/mod.rs
index 95df047e6..a4904d39d 100644
--- a/cli/args/mod.rs
+++ b/cli/args/mod.rs
@@ -1,5 +1,6 @@
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
 
+pub mod deno_json;
 mod flags;
 mod flags_net;
 mod import_map;