Revert "Compatibility: npm, yarn and pnpm run scripts"

This reverts commit b8d3ded.

lib/index.js

@@ -112,29 +112,8 @@ function applyArguments (patterns, args) {
  * @returns {string[]} Parsed patterns.
  */
 function parsePatterns (patternOrPatterns, args) {
-  let patterns = toArray(patternOrPatterns)
-
-  const isNPM = process.env.npm_config_user_agent && process.env.npm_config_user_agent.startsWith('npm')
-
-  if (!isNPM) {
-    // yarn | pnpm
-    patterns = patterns.map((pattern) => {
-      const match = ARGS_PATTERN.exec(pattern)
-
-      if (!match) {
-        return pattern
-      }
-
-      const patternList = pattern.split(' ')
-      const doubleDashIndex = patternList.findIndex((item) => item === '--')
-      patternList.splice(doubleDashIndex, 1)
-      pattern = patternList.join(' ')
-
-      return pattern
-    })
-  }
-
-  const hasPlaceholder = patterns.some((pattern) => ARGS_PATTERN.test(pattern))
+  const patterns = toArray(patternOrPatterns)
+  const hasPlaceholder = patterns.some(pattern => ARGS_PATTERN.test(pattern))
 
   return hasPlaceholder ? applyArguments(patterns, args) : patterns
 }