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home/ags/node_modules/eslint-plugin-promise/rules/no-callback-in-promise.js

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+/**
+ * Rule: no-callback-in-promise
+ * Avoid calling back inside of a promise
+ */
+
+'use strict'
+
+const { getAncestors } = require('./lib/eslint-compat')
+const getDocsUrl = require('./lib/get-docs-url')
+const hasPromiseCallback = require('./lib/has-promise-callback')
+const isInsidePromise = require('./lib/is-inside-promise')
+const isCallback = require('./lib/is-callback')
+
+const CB_BLACKLIST = ['callback', 'cb', 'next', 'done']
+
+module.exports = {
+  meta: {
+    type: 'suggestion',
+    docs: {
+      description:
+        'Disallow calling `cb()` inside of a `then()` (use [nodeify][] instead).',
+      url: getDocsUrl('no-callback-in-promise'),
+    },
+    messages: {
+      callback: 'Avoid calling back inside of a promise.',
+    },
+    schema: [
+      {
+        type: 'object',
+        properties: {
+          exceptions: {
+            type: 'array',
+            items: {
+              type: 'string',
+            },
+          },
+        },
+        additionalProperties: false,
+      },
+    ],
+  },
+  create(context) {
+    return {
+      CallExpression(node) {
+        const options = context.options[0] || {}
+        const exceptions = options.exceptions || []
+        if (!isCallback(node, exceptions)) {
+          // in general we send you packing if you're not a callback
+          // but we also need to watch out for whatever.then(cb)
+          if (hasPromiseCallback(node)) {
+            const name =
+              node.arguments && node.arguments[0] && node.arguments[0].name
+            if (!exceptions.includes(name) && CB_BLACKLIST.includes(name)) {
+              context.report({
+                node: node.arguments[0],
+                messageId: 'callback',
+              })
+            }
+          }
+          return
+        }
+        if (getAncestors(context, node).some(isInsidePromise)) {
+          context.report({
+            node,
+            messageId: 'callback',
+          })
+        }
+      },
+    }
+  },
+}