1 files changed, 30 insertions, 3 deletions

diff --git a/editors/code/src/installation/interfaces.ts b/editors/code/src/installation/interfaces.ts
index f54e24e26..03eac5b79 100644
--- a/editors/code/src/installation/interfaces.ts
+++ b/editors/code/src/installation/interfaces.ts
@@ -3,24 +3,51 @@ export interface GithubRepo {
     owner: string;
 }
 
+/**
+ * Metadata about particular artifact retrieved from GitHub releases.
+ */
 export interface ArtifactMetadata {
     releaseName: string;
     downloadUrl: string;
 }
 
-
+/**
+ * Type tag for `BinarySource` discriminated union.
+ */
 export enum BinarySourceType { ExplicitPath, GithubBinary }
 
-export type BinarySource = EplicitPathSource | GithubBinarySource;
+/**
+ * Represents the source of a binary artifact which is either specified by the user
+ * explicitly, or bundled by this extension from GitHub releases.
+ */
+export type BinarySource = ExplicitPathSource | GithubBinarySource;
+
 
-export interface EplicitPathSource {
+export interface ExplicitPathSource {
     type: BinarySourceType.ExplicitPath;
+
+    /**
+     * Filesystem path to the binary specified by the user explicitly.
+     */
     path: string;
 }
 
 export interface GithubBinarySource {
     type: BinarySourceType.GithubBinary;
+
+    /**
+     * Repository where the binary is stored.
+     */
     repo: GithubRepo;
+
+    /**
+     * Directory on the filesystem where the bundled binary is stored.
+     */
     dir: string;
+
+    /**
+     * Name of the binary file. It is stored under the same name on GitHub releases
+     * and in local `.dir`.
+     */
     file: string;
 }