fix: [one-component-per-file] do not check createApp function written by the developer vuejs#2201

Author: candy-Tong

lib/rules/one-component-per-file.js

@@ -29,7 +29,7 @@ module.exports = {
       {},
       utils.executeOnVueComponent(context, (node, type) => {
         if (type === 'definition') {
-          const defType = getVueComponentDefinitionType(node)
+          const defType = getVueComponentDefinitionType(context, node)
           if (defType === 'mixin') {
             return
           }

lib/rules/require-expose.js

@@ -272,7 +272,7 @@ module.exports = {
           return
         }
         if (type === 'definition') {
-          const defType = getVueComponentDefinitionType(component)
+          const defType = getVueComponentDefinitionType(context, component)
           if (defType === 'mixin') {
             return
           }

lib/rules/require-name-property.js

@@ -60,7 +60,7 @@ module.exports = {
     }
     return utils.executeOnVue(context, (component, type) => {
       if (type === 'definition') {
-        const defType = getVueComponentDefinitionType(component)
+        const defType = getVueComponentDefinitionType(context, component)
         if (defType === 'mixin') {
           return
         }

lib/utils/index.js

@@ -2479,10 +2479,11 @@ function isVueComponentFile(node, path) {
 /**
  * Get the Vue component definition type from given node
  * Vue.component('xxx', {}) || component('xxx', {})
+ * @param {RuleContext} context The rule context to use parser services.
  * @param {ObjectExpression} node Node to check
  * @returns {'component' | 'mixin' | 'extend' | 'createApp' | 'defineComponent' | null}
  */
-function getVueComponentDefinitionType(node) {
+function getVueComponentDefinitionType(context, node) {
   const parent = getParent(node)
   if (parent.type === 'CallExpression') {
     const callee = parent.callee
@@ -2527,6 +2528,23 @@ function getVueComponentDefinitionType(node) {
       if (callee.name === 'createApp') {
         // for Vue.js 3.x
         // createApp({})
+
+        const variable = findVariable(context.getScope(), callee)
+
+        // only lint the createApp function that import from vue
+        if(variable !== null && variable.defs.length === 1) {
+          const def = variable.defs[0]
+          if (
+            def.type === 'ImportBinding' &&
+            def.node.type === 'ImportSpecifier' &&
+            def.node.imported.type === 'Identifier' &&
+            def.node.parent.type === 'ImportDeclaration' &&
+            def.node.parent.source.value !== 'vue'
+          ) {
+            return null
+          }
+        }
+
         const isAppVueComponent = isObjectArgument(parent)
         return isAppVueComponent ? 'createApp' : null
       }
@@ -2603,7 +2621,7 @@ function getVueObjectType(context, node) {
     case 'CallExpression': {
       // Vue.component('xxx', {}) || component('xxx', {})
       if (
-        getVueComponentDefinitionType(node) != null &&
+        getVueComponentDefinitionType(context, node) != null &&
         skipTSAsExpression(parent.arguments.slice(-1)[0]) === node
       ) {
         return 'definition'

tests/lib/rules/one-component-per-file.js

@@ -54,6 +54,21 @@ ruleTester.run('one-component-per-file', rule, {
         Vue.mixin({})
         Vue.component('name', {})
       `
+    },
+    {
+      filename: 'test.js',
+      code: `
+        import { createApp } from 'vue'
+        createApp({})
+      `
+    },
+    {
+      filename: 'test.js',
+      code: `
+        import { createApp } from 'other.js'
+        createApp({})
+        createApp({})
+      `
     }
   ],
   invalid: [
@@ -95,6 +110,18 @@ ruleTester.run('one-component-per-file', rule, {
         'There is more than one component in this file.',
         'There is more than one component in this file.'
       ]
+    },
+    {
+      filename: 'test.vue',
+      code: `
+        import { createApp } from 'vue'
+        createApp({})
+        createApp({})
+      `,
+      errors: [
+        'There is more than one component in this file.',
+        'There is more than one component in this file.'
+      ]
     }
   ]
 })