fix(prepareOpts): TypeError when opts is undefined (#66)

* fix(prepareOpts): TypeError when opts is undefined
gemini-testing · May 8, 2020 · c6ea6c2 · c6ea6c2
1 parent 20f2512
commit c6ea6c2
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diff --git a/index.d.ts b/index.d.ts
@@ -191,7 +191,7 @@ interface Color {
 declare function looksSame(
     image1: string | Buffer | BoundedImage,
     image2: string | Buffer | BoundedImage,
-    options: LooksSameOptions,
+    options: LooksSameOptions | {},
     callback: LooksSameCallback
 ): void;
 /**

diff --git a/index.js b/index.js
@@ -116,6 +116,7 @@ const getToleranceFromOpts = (opts) => {
 };
 
 const prepareOpts = (opts) => {
+    opts = opts || {};
     opts.tolerance = getToleranceFromOpts(opts);
 
     return _.defaults(opts, {

diff --git a/test/test.js b/test/test.js
@@ -42,6 +42,12 @@ describe('looksSame', () => {
         }).to.throw(TypeError);
     });
 
+    it('should work when opts is undefined', () => {
+        expect(() => {
+            looksSame(srcPath('ref.png'), srcPath('same.png'), undefined, () => {});
+        }).not.to.throw(TypeError);
+    });
+
     it('should format images', (done) => {
         sandbox.spy(utils, 'formatImages');