From 49bba64134831ee223d182bdd808c5f9873eef3d Mon Sep 17 00:00:00 2001
From: Saman Bemel-Benrud <samanpwbb@gmail.com>
Date: Fri, 10 Apr 2020 10:21:24 -0700
Subject: [PATCH] export isExpressionFilter from spec (#9530)

(cherry picked from commit 7ede7d07c5232959328b1d6bef3c32ffa6c4a8ab)
(cherry picked from commit 4134ce757c23a337fa1859c6794c75a0c7a4cc04)
---
 src/style-spec/style-spec.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/style-spec/style-spec.js b/src/style-spec/style-spec.js
index 66e039f9fc7..7bf17892353 100644
--- a/src/style-spec/style-spec.js
+++ b/src/style-spec/style-spec.js
@@ -69,7 +69,8 @@ import diff from './diff';
 import ValidationError from './error/validation_error';
 import ParsingError from './error/parsing_error';
 import {StyleExpression, isExpression, createExpression, createPropertyExpression, normalizePropertyExpression, ZoomConstantExpression, ZoomDependentExpression, StylePropertyFunction} from './expression';
-import featureFilter from './feature_filter';
+import featureFilter, {isExpressionFilter} from './feature_filter';
+
 import convertFilter from './feature_filter/convert';
 import Color from './util/color';
 import {createFunction, isFunction} from './function';
@@ -82,6 +83,7 @@ import validateMapboxApiSupported from './validate_mapbox_api_supported';
 const expression = {
     StyleExpression,
     isExpression,
+    isExpressionFilter,
     createExpression,
     createPropertyExpression,
     normalizePropertyExpression,