perf(core): use startsWith instead of indexOf (#989)

2020-04-20 15:44:20 -04:00
parent 9e26be2c26
commit 054ccecd58
4 changed files with 4 additions and 4 deletions
--- a/packages/shared/src/normalizeProp.ts
+++ b/packages/shared/src/normalizeProp.ts
@@ -29,7 +29,7 @@ export function stringifyStyle(
  }
  for (const key in styles) {
    const value = styles[key]
-    const normalizedKey = key.indexOf(`--`) === 0 ? key : hyphenate(key)
+    const normalizedKey = key.startsWith(`--`) ? key : hyphenate(key)
    if (
      isString(value) ||
      (typeof value === 'number' && isNoUnitNumericStyleProp(normalizedKey))