Merge remote-tracking branch 'origin/speedups2' into temporalmedia-mehek

1 files changed, 4 insertions, 8 deletions

diff --git a/src/client/views/collections/collectionMulticolumn/CollectionMultirowView.tsx b/src/client/views/collections/collectionMulticolumn/CollectionMultirowView.tsx
index a2d51e2e7..7e2b83230 100644
--- a/src/client/views/collections/collectionMulticolumn/CollectionMultirowView.tsx
+++ b/src/client/views/collections/collectionMulticolumn/CollectionMultirowView.tsx
@@ -2,11 +2,9 @@ import { action, computed } from 'mobx';
 import { observer } from 'mobx-react';
 import * as React from "react";
 import { Doc } from '../../../../fields/Doc';
-import { documentSchema } from '../../../../fields/documentSchemas';
 import { List } from '../../../../fields/List';
-import { makeInterface } from '../../../../fields/Schema';
 import { BoolCast, NumCast, ScriptCast, StrCast } from '../../../../fields/Types';
-import { returnFalse, emptyPath, returnEmptyDoclist, emptyFunction } from '../../../../Utils';
+import { emptyFunction, returnFalse } from '../../../../Utils';
 import { DragManager, dropActionType } from '../../../util/DragManager';
 import { Transform } from '../../../util/Transform';
 import { undoBatch } from '../../../util/UndoManager';
@@ -16,9 +14,6 @@ import "./CollectionMultirowView.scss";
 import HeightLabel from './MultirowHeightLabel';
 import ResizeBar from './MultirowResizer';
 
-type MultirowDocument = makeInterface<[typeof documentSchema]>;
-const MultirowDocument = makeInterface(documentSchema);
-
 interface HeightSpecifier {
     magnitude: number;
     unit: string;
@@ -38,7 +33,7 @@ const resolvedUnits = Object.values(DimUnit);
 const resizerHeight = 8;
 
 @observer
-export class CollectionMultirowView extends CollectionSubView(MultirowDocument) {
+export class CollectionMultirowView extends CollectionSubView() {
 
     /**
      * @returns the list of layout documents whose width unit is
@@ -51,7 +46,8 @@ export class CollectionMultirowView extends CollectionSubView(MultirowDocument)
 
     @computed
     private get minimumDim() {
-        return Math.min(...this.ratioDefinedDocs.filter(layout => layout._dimMagnitude).map(layout => NumCast(layout._dimMagnitude)));
+        const ratioDocs = this.ratioDefinedDocs.filter(layout => layout._dimMagnitude);
+        return ratioDocs.length ? Math.min(...ratioDocs.map(layout => NumCast(layout._dimMagnitude))) : 1;
     }
 
     /**