feat(map): normalize helper handles numeric values

src/Map.ts

@@ -1,5 +1,3 @@
-import { isObject } from 'lodash';
-
 import { NotFoundError } from './error/NotFoundError';
 import { mergeList, toList } from './List';
 import { doesExist, isNil, mustExist, Optional } from './Maybe';
@@ -209,7 +207,9 @@ export function normalizeMap(map: MapLike<unknown>): Dict<Array<string>> {
       data[key] = value;
     } else if (typeof value === 'string') {
       data[key] = [value];
-    } else if (isObject(value)) {
+    } else if (typeof value === 'number') {
+      data[key] = [value.toString()];
+    } else if (typeof value === 'object' && doesExist(value)) {
       data[key] = [value.toString()];
     }
   }

test/utils/TestMap.ts

@@ -8,12 +8,12 @@ import {
   getOrDefault,
   makeDict,
   makeMap,
+  mergeMap,
   mustGet,
+  normalizeMap,
   pairsToMap,
-  setOrPush,
-  mergeMap,
   pushMergeMap,
-  normalizeMap,
+  setOrPush,
 } from '../../src/Map';
 
 const DEFAULT_VALUE = 'default';
@@ -227,7 +227,26 @@ describe('map utils', async () => {
       expect(normalized.toad).to.deep.equal(['too']);
     });
 
-    /* ['foo', 1] */
-    xit('should convert numbers into string values');
+    it('should convert number arguments into string values', () => {
+      const INPUT_VALUE = 123;
+      const input = new Map([
+        ['foo', INPUT_VALUE],
+      ]);
+      const normalized = normalizeMap(input);
+
+      expect(normalized.foo).to.deep.equal([INPUT_VALUE.toString()]);
+    });
+
+    it('should convert object arguments into string values', () => {
+      const OUTPUT_VALUE = 'bar';
+      const input = new Map([
+        ['foo', {
+          toString: () => OUTPUT_VALUE,
+        }],
+      ]);
+      const normalized = normalizeMap(input);
+
+      expect(normalized.foo).to.deep.equal([OUTPUT_VALUE]);
+    });
   });
 });