Initial commit

node_modules/js-yaml/lib/common.js

@@ -0,0 +1,50 @@
+'use strict'
+
+function isNothing (subject) {
+  return (typeof subject === 'undefined') || (subject === null)
+}
+
+function isObject (subject) {
+  return (typeof subject === 'object') && (subject !== null)
+}
+
+function toArray (sequence) {
+  if (Array.isArray(sequence)) return sequence
+  else if (isNothing(sequence)) return []
+
+  return [sequence]
+}
+
+function extend (target, source) {
+  if (source) {
+    const sourceKeys = Object.keys(source)
+
+    for (let index = 0, length = sourceKeys.length; index < length; index += 1) {
+      const key = sourceKeys[index]
+      target[key] = source[key]
+    }
+  }
+
+  return target
+}
+
+function repeat (string, count) {
+  let result = ''
+
+  for (let cycle = 0; cycle < count; cycle += 1) {
+    result += string
+  }
+
+  return result
+}
+
+function isNegativeZero (number) {
+  return (number === 0) && (Number.NEGATIVE_INFINITY === 1 / number)
+}
+
+module.exports.isNothing = isNothing
+module.exports.isObject = isObject
+module.exports.toArray = toArray
+module.exports.repeat = repeat
+module.exports.isNegativeZero = isNegativeZero
+module.exports.extend = extend