module: conditional exports with flagged conditions

PR-URL: https://github.com/nodejs/node/pull/29978
Reviewed-By: Jan Krems <jan.krems@gmail.com>
Reviewed-By: Myles Borins <myles.borins@gmail.com>

1 files changed, 9 insertions, 4 deletions

diff --git a/doc/api/modules.md b/doc/api/modules.md
index 8715218b32..d685662921 100644
--- a/doc/api/modules.md
+++ b/doc/api/modules.md
@@ -232,12 +232,17 @@ RESOLVE_BARE_SPECIFIER(DIR, X)
 2. If X matches this pattern and DIR/name/package.json is a file:
    a. Parse DIR/name/package.json, and look for "exports" field.
    b. If "exports" is null or undefined, GOTO 3.
-   c. Find the longest key in "exports" that the subpath starts with.
-   d. If no such key can be found, throw "not found".
-   e. let RESOLVED_URL =
+   c. If "exports" is an object with some keys starting with "." and some keys
+      not starting with ".", throw "invalid config".
+   c. If "exports" is a string, or object with no keys starting with ".", treat
+      it as having that value as its "." object property.
+   d. If subpath is "." and "exports" does not have a "." entry, GOTO 3.
+   e. Find the longest key in "exports" that the subpath starts with.
+   f. If no such key can be found, throw "not found".
+   g. let RESOLVED_URL =
         PACKAGE_EXPORTS_TARGET_RESOLVE(pathToFileURL(DIR/name), exports[key],
         subpath.slice(key.length)), as defined in the esm resolver.
-   f. return fileURLToPath(RESOLVED_URL)
+   h. return fileURLToPath(RESOLVED_URL)
 3. return DIR/X
 ```