fix(reactivity): account for NaN in value change checks (#361)

2019-10-23 10:53:43 -05:00
parent 11d0778f9c
commit 18a349ce8c
7 changed files with 47 additions and 8 deletions
--- a/packages/shared/src/index.ts
+++ b/packages/shared/src/index.ts
@@ -67,3 +67,7 @@ export const hyphenate = (str: string): string => {
 export const capitalize = (str: string): string => {
  return str.charAt(0).toUpperCase() + str.slice(1)
 }
+
+// compare whether a value has changed, accounting for NaN.
+export const hasChanged = (value: any, oldValue: any): boolean =>
+  value !== oldValue && (value === value || oldValue === oldValue)