1 files changed, 51 insertions, 0 deletions
diff --git a/packages/instant/src/util/error.ts b/packages/instant/src/util/error.ts
new file mode 100644
index 000000000..78d056e11
--- /dev/null
+++ b/packages/instant/src/util/error.ts
@@ -0,0 +1,51 @@
+import { AssetBuyerError } from '@0xproject/asset-buyer';
+import { Dispatch } from 'redux';
+
+import { Action, actions } from '../redux/actions';
+import { assetDataUtil } from '../util/asset_data';
+
+class ErrorFlasher {
+    private _timeoutId?: number;
+    public flashNewError(dispatch: Dispatch<Action>, error: any, delayMs: number = 7000): void {
+        this._clearTimeout();
+
+        // dispatch new message
+        dispatch(actions.setError(error));
+
+        this._timeoutId = window.setTimeout(() => {
+            dispatch(actions.hideError());
+        }, delayMs);
+    }
+    public clearError(dispatch: Dispatch<Action>): void {
+        this._clearTimeout();
+        dispatch(actions.hideError());
+    }
+    private _clearTimeout(): void {
+        if (this._timeoutId) {
+            window.clearTimeout(this._timeoutId);
+        }
+    }
+}
+
+const humanReadableMessageForError = (error: Error, assetData?: string): string | undefined => {
+    if (error.message === AssetBuyerError.InsufficientAssetLiquidity) {
+        const assetName = assetDataUtil.bestNameForAsset(assetData, 'of this asset');
+        return `Not enough ${assetName} available`;
+    }
+
+    return undefined;
+};
+
+export const errorUtil = {
+    errorFlasher: new ErrorFlasher(),
+    errorDescription: (error?: any, assetData?: string): { icon: string; message: string } => {
+        let bestMessage: string | undefined;
+        if (error instanceof Error) {
+            bestMessage = humanReadableMessageForError(error, assetData);
+        }
+        return {
+            icon: '😢',
+            message: bestMessage || 'Something went wrong...',
+        };
+    },
+};