Write sequence read-ahead cache to correct index (#3025)

attic-labs · Jan 5, 2017 · 528355c · 528355c
1 parent 1e0a698
commit 528355c
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Showing 2 changed files with 4 additions and 3 deletions.
diff --git a/js/noms/package.json b/js/noms/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@attic/noms",
   "license": "Apache-2.0",
-  "version": "65.7.0",
+  "version": "65.8.0",
   "description": "Noms JS SDK",
   "repository": "https://github.com/attic-labs/noms/tree/master/js/noms",
   "main": "dist/commonjs/noms.js",

diff --git a/js/noms/src/sequence.js b/js/noms/src/sequence.js
@@ -126,10 +126,11 @@ export class SequenceCursor<T, S: Sequence<any>> {
   getChildSequence(): Promise<?S> {
     if (this.readAhead && this.sequence.isMeta && !this.childSeqs) {
       // Only readAhead when enabled, for meta sequences.
-      this.childSeqs = [];
+      const childSeqs = [];
       for (let i = this.idx; i < this.sequence.length; i++) {
-        this.childSeqs.push(this.sequence.getChildSequence(i));
+        childSeqs[i] = this.sequence.getChildSequence(i);
       }
+      this.childSeqs = childSeqs;
     }
 
     if (this.childSeqs && this.childSeqs[this.idx]) {