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

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+/**
+ * Library: Has Promise Callback
+ * Makes sure that an Expression node is part of a promise
+ * with callback functions (like then() or catch())
+ */
+
+'use strict'
+
+/**
+ * @typedef {import('estree').SimpleCallExpression} CallExpression
+ * @typedef {import('estree').MemberExpression} MemberExpression
+ * @typedef {import('estree').Identifier} Identifier
+ *
+ * @typedef {object} NameIsThenOrCatch
+ * @property {'then' | 'catch'} name
+ *
+ * @typedef {object} PropertyIsThenOrCatch
+ * @property {Identifier & NameIsThenOrCatch} property
+ *
+ * @typedef {object} CalleeIsPromiseCallback
+ * @property {MemberExpression & PropertyIsThenOrCatch} callee
+ *
+ * @typedef {CallExpression & CalleeIsPromiseCallback} HasPromiseCallback
+ */
+/**
+ * @param {import('estree').Node} node
+ * @returns {node is HasPromiseCallback}
+ */
+function hasPromiseCallback(node) {
+  // istanbul ignore if -- only being called within `CallExpression`
+  if (node.type !== 'CallExpression') return
+  if (node.callee.type !== 'MemberExpression') return
+  const propertyName = node.callee.property.name
+  return propertyName === 'then' || propertyName === 'catch'
+}
+
+module.exports = hasPromiseCallback