perf: remove useless truthy check in .filter() via casting (#42)

ybiquitous · web-flow · commit ce1f3bed0852 · 2018-02-23T14:30:17.000+09:00
diff --git a/index.ts b/index.ts
@@ -72,7 +72,7 @@ export default function bem(
     }
 
     return Object.keys(mods)
-      .filter((mod) => mods && mods[mod])
+      .filter((mod) => (mods as Modifiers)[mod])
       .map((mod) => `${base}${modifierDelimiter}${mod}`)
       .join(' ')
   }

Original file line number	Diff line number	Diff line change
`@@ -72,7 +72,7 @@ export default function bem(`
`72`	`72`	`}`
`73`	`73`
`74`	`74`	`return Object.keys(mods)`
`75`		`- .filter((mod) => mods && mods[mod])`
	`75`	`+ .filter((mod) => (mods as Modifiers)[mod])`
`76`	`76`	.map((mod) => `${base}${modifierDelimiter}${mod}`)
`77`	`77`	`.join(' ')`
`78`	`78`	`}`