refactor: use optional chaining ?.

Author: iiroj

lib/index.js

@@ -109,7 +109,7 @@ const lintStaged = async (
     printTaskOutput(ctx, logger)
     return true
   } catch (runAllError) {
-    if (runAllError && runAllError.ctx && runAllError.ctx.errors) {
+    if (runAllError?.ctx?.errors) {
       const { ctx } = runAllError
 
       if (ctx.errors.has(ConfigNotFoundError)) {

lib/printTaskOutput.js

@@ -5,7 +5,7 @@
  */
 export const printTaskOutput = (ctx = {}, logger) => {
   if (!Array.isArray(ctx.output)) return
-  const log = ctx.errors && ctx.errors.size > 0 ? logger.error : logger.log
+  const log = ctx.errors?.size > 0 ? logger.error : logger.log
   for (const line of ctx.output) {
     log(line)
   }