1 files changed, 3 insertions, 3 deletions
diff --git a/src/client/util/History.ts b/src/client/util/History.ts
index 52d0223d5..0d0c056a4 100644
--- a/src/client/util/History.ts
+++ b/src/client/util/History.ts
@@ -85,7 +85,7 @@ export namespace HistoryUtil {
     const parsers: { [type: string]: (pathname: string[], opts: qs.ParsedQuery) => ParsedUrl | undefined } = {};
     const stringifiers: { [type: string]: (state: ParsedUrl) => string } = {};
 
-    type ParserValue = true | 'none' | 'json' | ((value: string) => any);
+    type ParserValue = true | 'none' | 'json' | ((value: string) => string | null | (string | null)[]);
 
     type Parser = {
         [key: string]: ParserValue;
@@ -106,7 +106,7 @@ export namespace HistoryUtil {
             return value;
         }
         parsers[type] = (pathname, opts) => {
-            const current: any = { type };
+            const current: DocUrl & { [key: string]: null | (string | null)[] | string } = { type: 'doc', docId: '' };
             for (const required in requiredFields) {
                 if (!(required in opts)) {
                     return undefined;
@@ -148,7 +148,7 @@ export namespace HistoryUtil {
                 path = customStringifier(state, path);
             }
             const queryObj = OmitKeys(state, keys).extract;
-            const query: any = {};
+            const query: { [key: string]: string | null } = {};
             Object.keys(queryObj).forEach(key => {
                 query[key] = queryObj[key] === null ? null : JSON.stringify(queryObj[key]);
             });