1 files changed, 32 insertions, 26 deletions

diff --git a/cli/args/config_file.rs b/cli/args/config_file.rs
index 0d84de2e4..154692376 100644
--- a/cli/args/config_file.rs
+++ b/cli/args/config_file.rs
@@ -18,6 +18,7 @@ use deno_core::serde_json;
 use deno_core::serde_json::json;
 use deno_core::serde_json::Value;
 use deno_core::ModuleSpecifier;
+use std::borrow::Cow;
 use std::collections::BTreeMap;
 use std::collections::HashMap;
 use std::collections::HashSet;
@@ -483,10 +484,21 @@ pub struct ConfigFile {
 }
 
 impl ConfigFile {
-  pub fn discover(flags: &Flags) -> Result<Option<ConfigFile>, AnyError> {
+  pub fn discover(
+    flags: &Flags,
+    cwd: &Path,
+  ) -> Result<Option<ConfigFile>, AnyError> {
     match &flags.config_flag {
       ConfigFlag::Disabled => Ok(None),
-      ConfigFlag::Path(config_path) => Ok(Some(ConfigFile::read(config_path)?)),
+      ConfigFlag::Path(config_path) => {
+        let config_path = PathBuf::from(config_path);
+        let config_path = if config_path.is_absolute() {
+          config_path
+        } else {
+          cwd.join(config_path)
+        };
+        Ok(Some(ConfigFile::read(&config_path)?))
+      }
       ConfigFlag::Discover => {
         if let Some(config_path_args) = flags.config_path_args() {
           let mut checked = HashSet::new();
@@ -508,8 +520,7 @@ impl ConfigFile {
             }
           };
           // From CWD walk up to root looking for deno.json or deno.jsonc
-          let cwd = std::env::current_dir()?;
-          Self::discover_from(&cwd, &mut checked)
+          Self::discover_from(cwd, &mut checked)
         } else {
           Ok(None)
         }
@@ -524,6 +535,14 @@ impl ConfigFile {
     /// Filenames that Deno will recognize when discovering config.
     const CONFIG_FILE_NAMES: [&str; 2] = ["deno.json", "deno.jsonc"];
 
+    // todo(dsherret): in the future, we should force all callers
+    // to provide a resolved path
+    let start = if start.is_absolute() {
+      Cow::Borrowed(start)
+    } else {
+      Cow::Owned(std::env::current_dir()?.join(start))
+    };
+
     for ancestor in start.ancestors() {
       if checked.insert(ancestor.to_path_buf()) {
         for config_filename in CONFIG_FILE_NAMES {
@@ -556,34 +575,29 @@ impl ConfigFile {
     Ok(None)
   }
 
-  pub fn read(path_ref: impl AsRef<Path>) -> Result<Self, AnyError> {
-    let path = Path::new(path_ref.as_ref());
-    let config_file = if path.is_absolute() {
-      path.to_path_buf()
-    } else {
-      std::env::current_dir()?.join(path_ref)
-    };
+  pub fn read(config_path: &Path) -> Result<Self, AnyError> {
+    debug_assert!(config_path.is_absolute());
 
     // perf: Check if the config file exists before canonicalizing path.
-    if !config_file.exists() {
+    if !config_path.exists() {
       return Err(
         std::io::Error::new(
           std::io::ErrorKind::InvalidInput,
           format!(
             "Could not find the config file: {}",
-            config_file.to_string_lossy()
+            config_path.to_string_lossy()
           ),
         )
         .into(),
       );
     }
 
-    let config_path = canonicalize_path(&config_file).map_err(|_| {
+    let config_path = canonicalize_path(config_path).map_err(|_| {
       std::io::Error::new(
         std::io::ErrorKind::InvalidInput,
         format!(
           "Could not find the config file: {}",
-          config_file.to_string_lossy()
+          config_path.to_string_lossy()
         ),
       )
     })?;
@@ -991,24 +1005,16 @@ mod tests {
   use pretty_assertions::assert_eq;
 
   #[test]
-  fn read_config_file_relative() {
-    let config_file =
-      ConfigFile::read("tests/testdata/module_graph/tsconfig.json")
-        .expect("Failed to load config file");
-    assert!(config_file.json.compiler_options.is_some());
-  }
-
-  #[test]
   fn read_config_file_absolute() {
     let path = test_util::testdata_path().join("module_graph/tsconfig.json");
-    let config_file = ConfigFile::read(path.to_str().unwrap())
-      .expect("Failed to load config file");
+    let config_file = ConfigFile::read(&path).unwrap();
     assert!(config_file.json.compiler_options.is_some());
   }
 
   #[test]
   fn include_config_path_on_error() {
-    let error = ConfigFile::read("404.json").err().unwrap();
+    let path = test_util::testdata_path().join("404.json");
+    let error = ConfigFile::read(&path).err().unwrap();
     assert!(error.to_string().contains("404.json"));
   }