feat(prefer-node-protocol): Add support for process.getBuiltinModule() (#430)

ota-meshi · web-flow · commit 9e97d8efc32f · 2025-05-09T13:09:11.000+08:00
diff --git a/docs/rules/prefer-node-protocol.md b/docs/rules/prefer-node-protocol.md
@@ -17,6 +17,7 @@ Note that Node.js support for this feature began in:
 
 > v16.0.0, v14.18.0 (`require()`)  
 > v14.13.1, v12.20.0 (`import`)
+> v22.3.0, v20.16.0 (`process.getBuiltinModule()`)
 
 ## 📖 Rule Details
 
@@ -32,6 +33,8 @@ import fs from "node:fs"
 export { promises } from "node:fs"
 
 const fs = require("node:fs")
+
+const fs = process.getBuiltinModule("node:fs")
 ```
 
 👎 Examples of **incorrect** code for this rule:
@@ -44,6 +47,8 @@ import fs from "fs"
 export { promises } from "fs"
 
 const fs = require("fs")
+
+const fs = process.getBuiltinModule("fs")
 ```
 
 ### Configured Node.js version range
diff --git a/lib/rules/prefer-node-protocol.js b/lib/rules/prefer-node-protocol.js
@@ -4,7 +4,10 @@
  */
 "use strict"
 
-const { getStringIfConstant } = require("@eslint-community/eslint-utils")
+const {
+    getStringIfConstant,
+    getPropertyName,
+} = require("@eslint-community/eslint-utils")
 
 const { Range } = require("semver")
 
@@ -15,6 +18,10 @@ const {
     NodeBuiltinModules,
 } = require("../unsupported-features/node-builtins.js")
 
+/**
+ * @typedef { 'import' | 'require' | 'getBuiltinModule' } ModuleStyle
+ */
+
 /**
  * @param {string} name The name of the node module
  * @returns {boolean}
@@ -38,10 +45,15 @@ function isStringLiteral(node) {
 
 /**
  * @param {import('eslint').Rule.RuleContext} context
- * @param {import('../util/import-target.js').ModuleStyle} moduleStyle
+ * @param {ModuleStyle} moduleStyle
  * @returns {boolean}
  */
 function isEnablingThisRule(context, moduleStyle) {
+    // The availability of `process.getBuiltinModule()` means that `node:` protocol is supported.
+    if (moduleStyle === "getBuiltinModule") {
+        return true
+    }
+
     const version = getConfiguredNodeVersion(context)
 
     // Only check Node.js version because this rule is meaningless if configured Node.js version doesn't match semver range.
@@ -81,7 +93,7 @@ function isValidRequireArgument(node) {
 /**
  * @param {import('estree').Node | null | undefined} node
  * @param {import('eslint').Rule.RuleContext} context
- * @param {import('../util/import-target.js').ModuleStyle} moduleStyle
+ * @param {ModuleStyle} moduleStyle
  */
 function validate(node, context, moduleStyle) {
     if (node == null) {
@@ -96,7 +108,10 @@ function validate(node, context, moduleStyle) {
         return
     }
 
-    if (moduleStyle === "require" && !isValidRequireArgument(node)) {
+    if (
+        (moduleStyle === "require" || moduleStyle === "getBuiltinModule") &&
+        !isValidRequireArgument(node)
+    ) {
         return
     }
 
@@ -126,6 +141,25 @@ function validate(node, context, moduleStyle) {
     })
 }
 
+/**
+ * @param {import('estree').Expression | import('estree').Super} node
+ */
+function isProcess(node) {
+    if (node.type === "Identifier" && node.name === "process") {
+        return true
+    }
+    if (node.type === "MemberExpression") {
+        if (getPropertyName(node) !== "process") {
+            return false
+        }
+        return (
+            node.object.type === "Identifier" &&
+            node.object.name === "globalThis"
+        )
+    }
+    return false
+}
+
 /** @type {import('./rule-module').RuleModule} */
 module.exports = {
     meta: {
@@ -158,15 +192,25 @@ module.exports = {
                 }
 
                 if (
-                    node.optional ||
-                    node.arguments.length !== 1 ||
-                    node.callee.type !== "Identifier" ||
-                    node.callee.name !== "require"
+                    !node.optional &&
+                    node.arguments.length === 1 &&
+                    node.callee.type === "Identifier" &&
+                    node.callee.name === "require"
                 ) {
-                    return
+                    return validate(node.arguments[0], context, "require")
+                }
+                if (
+                    node.arguments.length >= 1 &&
+                    node.callee.type === "MemberExpression" &&
+                    isProcess(node.callee.object) &&
+                    getPropertyName(node.callee) === "getBuiltinModule"
+                ) {
+                    return validate(
+                        node.arguments[0],
+                        context,
+                        "getBuiltinModule"
+                    )
                 }
-
-                return validate(node.arguments[0], context, "require")
             },
 
             ExportAllDeclaration(node) {
diff --git a/tests/lib/rules/prefer-node-protocol.js b/tests/lib/rules/prefer-node-protocol.js
@@ -77,6 +77,25 @@ new RuleTester({
             options: [{ version: "15.14.0" }],
             code: 'const fs = require("fs");',
         },
+
+        // `process.getBuiltinModule`
+        'const fs = process.getBuiltinModule("node:fs");',
+        'const fs = globalThis.process.getBuiltinModule("node:fs");',
+        'const fs = process.getBuiltinModule("node:fs/promises");',
+        'const fs = process.getNotBuiltinModule("node:fs", extra);',
+        "const fs = process.getBuiltinModule(fs);",
+        'const fs = process.getNotBuiltinModule("fs");',
+        'const fs = process.foo.getNotBuiltinModule("fs");',
+        'const fs = foo.process.getNotBuiltinModule("fs");',
+        'const fs = process.getNotBuiltinModule.foo("fs");',
+        "const fs = process.getNotBuiltinModule(`fs`);",
+        "const fs = process.getNotBuiltinModule();",
+        'const fs = process.getNotBuiltinModule(...["fs"]);',
+        'const fs = process.getNotBuiltinModule("eslint-plugin-n");',
+        {
+            options: [{ version: "12.19.1" }],
+            code: 'const fs = process.getBuiltinModule("node:fs");',
+        },
     ],
     invalid: [
         {
@@ -249,5 +268,44 @@ new RuleTester({
             output: 'import https from "node:https";',
             errors: ["Prefer `node:https` over `https`."],
         },
+
+        // `process.getBuiltinModule`
+        {
+            code: 'const {promises} = process.getBuiltinModule("fs")',
+            output: 'const {promises} = process.getBuiltinModule("node:fs")',
+            errors: ["Prefer `node:fs` over `fs`."],
+        },
+        {
+            code: 'const {promises} = globalThis.process.getBuiltinModule("fs")',
+            output: 'const {promises} = globalThis.process.getBuiltinModule("node:fs")',
+            errors: ["Prefer `node:fs` over `fs`."],
+        },
+        {
+            code: 'const {promises} = process.getBuiltinModule("fs", extra)',
+            output: 'const {promises} = process.getBuiltinModule("node:fs", extra)',
+            errors: ["Prefer `node:fs` over `fs`."],
+        },
+        {
+            code: "const fs = process.getBuiltinModule('fs/promises')",
+            output: "const fs = process.getBuiltinModule('node:fs/promises')",
+            errors: ["Prefer `node:fs/promises` over `fs/promises`."],
+        },
+        {
+            code: `
+                const express = process.getBuiltinModule('express');
+                const fs = process.getBuiltinModule('fs/promises');
+            `,
+            output: `
+                const express = process.getBuiltinModule('express');
+                const fs = process.getBuiltinModule('node:fs/promises');
+            `,
+            errors: ["Prefer `node:fs/promises` over `fs/promises`."],
+        },
+        {
+            options: [{ version: "12.19.1" }],
+            code: 'const {promises} = process.getBuiltinModule("fs")',
+            output: 'const {promises} = process.getBuiltinModule("node:fs")',
+            errors: ["Prefer `node:fs` over `fs`."],
+        },
     ],
 })
