ags

home/ags/node_modules/eslint-plugin-promise/rules/lib/is-promise.js

@@ -0,0 +1,36 @@
+/**
+ * Library: isPromise
+ * Makes sure that an Expression node is part of a promise.
+ */
+'use strict'
+
+const PROMISE_STATICS = require('./promise-statics')
+
+function isPromise(expression) {
+  return (
+    // hello.then()
+    (expression.type === 'CallExpression' &&
+      expression.callee.type === 'MemberExpression' &&
+      expression.callee.property.name === 'then') ||
+    // hello.catch()
+    (expression.type === 'CallExpression' &&
+      expression.callee.type === 'MemberExpression' &&
+      expression.callee.property.name === 'catch') ||
+    // hello.finally()
+    (expression.type === 'CallExpression' &&
+      expression.callee.type === 'MemberExpression' &&
+      expression.callee.property.name === 'finally') ||
+    // somePromise.ANYTHING()
+    (expression.type === 'CallExpression' &&
+      expression.callee.type === 'MemberExpression' &&
+      isPromise(expression.callee.object)) ||
+    // Promise.STATIC_METHOD()
+    (expression.type === 'CallExpression' &&
+      expression.callee.type === 'MemberExpression' &&
+      expression.callee.object.type === 'Identifier' &&
+      expression.callee.object.name === 'Promise' &&
+      PROMISE_STATICS[expression.callee.property.name])
+  )
+}
+
+module.exports = isPromise