1 files changed, 82 insertions, 0 deletions
diff --git a/vendor/twbs/bootstrap/build/lint-vars.js b/vendor/twbs/bootstrap/build/lint-vars.js
new file mode 100644
index 000000000..1b8d71cc6
--- /dev/null
+++ b/vendor/twbs/bootstrap/build/lint-vars.js
@@ -0,0 +1,82 @@
+#!/usr/bin/env node
+
+/*!
+ * Script to find unused Sass variables.
+ * Copyright 2017-2018 The Bootstrap Authors
+ * Copyright 2017-2018 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ */
+
+'use strict'
+
+const fs = require('fs')
+const path = require('path')
+const glob = require('glob')
+
+// Blame TC39... https://github.com/benjamingr/RegExp.escape/issues/37
+function regExpQuote(str) {
+  return str.replace(/[-\\^$*+?.()|[\]{}]/g, '\\$&')
+}
+
+let globalSuccess = true
+
+function findUnusedVars(dir) {
+  if (!(fs.existsSync(dir) && fs.statSync(dir).isDirectory())) {
+    console.log(`"${dir}": Not a valid directory!`)
+    process.exit(1)
+  }
+
+  console.log(`Finding unused variables in "${dir}"...`)
+
+  // A variable to handle success/failure message in this function
+  let unusedVarsFound = false
+
+  // Array of all Sass files' content
+  const sassFiles = glob.sync(path.join(dir, '**/*.scss'))
+  // String of all Sass files' content
+  let sassFilesString = ''
+
+  sassFiles.forEach((file) => {
+    sassFilesString += fs.readFileSync(file, 'utf8')
+  })
+
+  // Array of all Sass variables
+  const variables = sassFilesString.match(/(^\$[a-zA-Z0-9_-]+[^:])/gm)
+
+  console.log(`Found ${variables.length} total variables.`)
+
+  // Loop through each variable
+  variables.forEach((variable) => {
+    const re = new RegExp(regExpQuote(variable), 'g')
+    const count = (sassFilesString.match(re) || []).length
+
+    if (count === 1) {
+      console.log(`Variable "${variable}" is not being used.`)
+      unusedVarsFound = true
+      globalSuccess = false
+    }
+  })
+
+  if (unusedVarsFound === false) {
+    console.log(`No unused variables found in "${dir}".`)
+  }
+}
+
+function main(args) {
+  if (args.length < 1) {
+    console.log('Wrong arguments!')
+    console.log('Usage: lint-vars.js folder [, folder2...]')
+    process.exit(1)
+  }
+
+  args.forEach((arg) => {
+    findUnusedVars(arg)
+  })
+
+  if (globalSuccess === false) {
+    process.exit(1)
+  }
+}
+
+// The first and second args are: path/to/node script.js
+main(process.argv.slice(2))