refactor(Cypress): add nodemodules

node_modules/get-assigned-identifiers/index.js

@@ -0,0 +1,57 @@
+var assert = require('assert')
+
+/**
+ * Get a list of all identifiers that are initialised by this (possibly destructuring)
+ * node.
+ *
+ * eg with input:
+ *
+ * var { a: [b, ...c], d } = xyz
+ *
+ * this returns the nodes for 'b', 'c', and 'd'
+ */
+module.exports = function getAssignedIdentifiers (node, identifiers) {
+  assert.equal(typeof node, 'object', 'get-assigned-identifiers: node must be object')
+  assert.equal(typeof node.type, 'string', 'get-assigned-identifiers: node must have a type')
+
+  identifiers = identifiers || []
+
+  if (node.type === 'ImportDeclaration') {
+    node.specifiers.forEach(function (el) {
+      getAssignedIdentifiers(el, identifiers)
+    })
+  }
+
+  if (node.type === 'ImportDefaultSpecifier' || node.type === 'ImportNamespaceSpecifier' || node.type === 'ImportSpecifier') {
+    node = node.local
+  }
+
+  if (node.type === 'RestElement') {
+    node = node.argument
+  }
+
+  if (node.type === 'ArrayPattern') {
+    node.elements.forEach(function (el) {
+      // `el` might be `null` in case of `[x,,y] = whatever`
+      if (el) {
+        getAssignedIdentifiers(el, identifiers)
+      }
+    })
+  }
+
+  if (node.type === 'ObjectPattern') {
+    node.properties.forEach(function (prop) {
+      if (prop.type === 'Property') {
+        getAssignedIdentifiers(prop.value, identifiers)
+      } else if (prop.type === 'RestElement') {
+        getAssignedIdentifiers(prop, identifiers)
+      }
+    })
+  }
+
+  if (node.type === 'Identifier') {
+    identifiers.push(node)
+  }
+
+  return identifiers
+}