refactor(rstream-dot): TS strictNullChecks

thi-ng · Jun 9, 2019 · efca49c · efca49c
1 parent 1aad856
commit efca49c
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Showing 2 changed files with 5 additions and 4 deletions.
diff --git a/packages/rstream-dot/src/api.ts b/packages/rstream-dot/src/api.ts
@@ -14,9 +14,9 @@ export type NodeType =
 export interface Node {
     id: number;
     label: string;
-    type: string;
-    xform: boolean;
-    body: string;
+    type?: string;
+    xform?: boolean;
+    body?: string;
 }
 
 export interface WalkState {

diff --git a/packages/rstream-dot/src/index.ts b/packages/rstream-dot/src/index.ts
@@ -78,7 +78,8 @@ export const walk = (
         if (children) {
             walk(children, opts, state);
             for (let c of children) {
-                state.rels.push([desc, state.subs.get(c)]);
+                const childNode = state.subs.get(c);
+                childNode && state.rels.push([desc, childNode]);
             }
         }
     }