perf: improve prefer-node-protocol's performance (#406)

Author: pralkarz

lib/rules/prefer-node-protocol.js

@@ -4,12 +4,13 @@
  */
 "use strict"
 
+const { getStringIfConstant } = require("@eslint-community/eslint-utils")
+
 const { Range } = require("semver")
 
 const getConfiguredNodeVersion = require("../util/get-configured-node-version")
-const visitImport = require("../util/visit-import")
-const visitRequire = require("../util/visit-require")
-const mergeVisitorsInPlace = require("../util/merge-visitors-in-place")
+const stripImportPathParams = require("../util/strip-import-path-params")
+
 const {
     NodeBuiltinModules,
 } = require("../unsupported-features/node-builtins.js")
@@ -27,6 +28,104 @@ const messageId = "preferNodeProtocol"
 const supportedRangeForEsm = new Range("^12.20.0 || >= 14.13.1")
 const supportedRangeForCjs = new Range("^14.18.0 || >= 16.0.0")
 
+/**
+ * @param {import('estree').Node} [node]
+ * @returns {node is import('estree').Literal}
+ */
+function isStringLiteral(node) {
+    return node?.type === "Literal" && typeof node.type === "string"
+}
+
+/**
+ * @param {import('eslint').Rule.RuleContext} context
+ * @param {import('../util/import-target.js').ModuleStyle} moduleStyle
+ * @returns {boolean}
+ */
+function isEnablingThisRule(context, moduleStyle) {
+    const version = getConfiguredNodeVersion(context)
+
+    // Only check Node.js version because this rule is meaningless if configured Node.js version doesn't match semver range.
+    if (!version.intersects(supportedRangeForEsm)) {
+        return false
+    }
+
+    // Only check when using `require`
+    if (
+        moduleStyle === "require" &&
+        !version.intersects(supportedRangeForCjs)
+    ) {
+        return false
+    }
+
+    return true
+}
+
+/**
+ * @param {import('estree').Node} node
+ * @returns {boolean}
+ **/
+function isValidRequireArgument(node) {
+    const rawName = getStringIfConstant(node)
+    if (typeof rawName !== "string") {
+        return false
+    }
+
+    const name = stripImportPathParams(rawName)
+    if (!isBuiltin(name)) {
+        return false
+    }
+
+    return true
+}
+
+/**
+ * @param {import('estree').Node | null | undefined} node
+ * @param {import('eslint').Rule.RuleContext} context
+ * @param {import('../util/import-target.js').ModuleStyle} moduleStyle
+ */
+function validate(node, context, moduleStyle) {
+    if (node == null) {
+        return
+    }
+
+    if (!isEnablingThisRule(context, moduleStyle)) {
+        return
+    }
+
+    if (!isStringLiteral(node)) {
+        return
+    }
+
+    if (moduleStyle === "require" && !isValidRequireArgument(node)) {
+        return
+    }
+
+    if (
+        !("value" in node) ||
+        typeof node.value !== "string" ||
+        node.value.startsWith("node:") ||
+        !isBuiltin(node.value) ||
+        !isBuiltin(`node:${node.value}`)
+    ) {
+        return
+    }
+
+    context.report({
+        node,
+        messageId,
+        data: {
+            moduleName: node.value,
+        },
+        fix(fixer) {
+            const firstCharacterIndex = (node?.range?.[0] ?? 0) + 1
+            return fixer.replaceTextRange(
+                [firstCharacterIndex, firstCharacterIndex],
+                "node:"
+            )
+        },
+    })
+}
+
 /** @type {import('eslint').Rule.RuleModule} */
 module.exports = {
     meta: {
@@ -52,139 +151,36 @@ module.exports = {
         type: "suggestion",
     },
     create(context) {
-        /**
-         * @param {import('estree').Node} node
-         * @param {object} options
-         * @param {string} options.name
-         * @param {number} options.argumentsLength
-         * @returns {node is import('estree').CallExpression}
-         */
-        function isCallExpression(node, { name, argumentsLength }) {
-            if (node?.type !== "CallExpression") {
-                return false
-            }
-
-            if (node.optional) {
-                return false
-            }
-
-            if (node.arguments.length !== argumentsLength) {
-                return false
-            }
-
-            if (
-                node.callee.type !== "Identifier" ||
-                node.callee.name !== name
-            ) {
-                return false
-            }
-
-            return true
-        }
-
-        /**
-         * @param {import('estree').Node} [node]
-         * @returns {node is import('estree').Literal}
-         */
-        function isStringLiteral(node) {
-            return node?.type === "Literal" && typeof node.type === "string"
-        }
-
-        /**
-         * @param {import('estree').Node | undefined} node
-         * @returns {node is import('estree').CallExpression}
-         */
-        function isStaticRequire(node) {
-            return (
-                node != null &&
-                isCallExpression(node, {
-                    name: "require",
-                    argumentsLength: 1,
-                }) &&
-                isStringLiteral(node.arguments[0])
-            )
-        }
-
-        /**
-         * @param {import('eslint').Rule.RuleContext} context
-         * @param {import('../util/import-target.js').ModuleStyle} moduleStyle
-         * @returns {boolean}
-         */
-        function isEnablingThisRule(context, moduleStyle) {
-            const version = getConfiguredNodeVersion(context)
-
-            // Only check Node.js version because this rule is meaningless if configured Node.js version doesn't match semver range.
-            if (!version.intersects(supportedRangeForEsm)) {
-                return false
-            }
-
-            // Only check when using `require`
-            if (
-                moduleStyle === "require" &&
-                !version.intersects(supportedRangeForCjs)
-            ) {
-                return false
-            }
-
-            return true
-        }
+        return {
+            CallExpression(node) {
+                if (node.type !== "CallExpression") {
+                    return
+                }
+
+                if (
+                    node.optional ||
+                    node.arguments.length !== 1 ||
+                    node.callee.type !== "Identifier" ||
+                    node.callee.name !== "require"
+                ) {
+                    return
+                }
+
+                return validate(node.arguments[0], context, "require")
+            },
 
-        /** @type {import('../util/import-target.js')[]} */
-        const targets = []
-        return [
-            visitImport(context, { includeCore: true }, importTargets => {
-                targets.push(...importTargets)
-            }),
-            visitRequire(context, { includeCore: true }, requireTargets => {
-                targets.push(
-                    ...requireTargets.filter(target =>
-                        isStaticRequire(target.node.parent)
-                    )
-                )
-            }),
-            {
-                "Program:exit"() {
-                    for (const { node, moduleStyle } of targets) {
-                        if (!isEnablingThisRule(context, moduleStyle)) {
-                            continue
-                        }
-
-                        if (node.type === "TemplateLiteral") {
-                            continue
-                        }
-
-                        if (
-                            !("value" in node) ||
-                            typeof node.value !== "string" ||
-                            node.value.startsWith("node:") ||
-                            !isBuiltin(node.value) ||
-                            !isBuiltin(`node:${node.value}`)
-                        ) {
-                            continue
-                        }
-
-                        context.report({
-                            node,
-                            messageId,
-                            data: {
-                                moduleName: node.value,
-                            },
-                            fix(fixer) {
-                                const firstCharacterIndex =
-                                    (node?.range?.[0] ?? 0) + 1
-                                return fixer.replaceTextRange(
-                                    [firstCharacterIndex, firstCharacterIndex],
-                                    "node:"
-                                )
-                            },
-                        })
-                    }
-                },
+            ExportAllDeclaration(node) {
+                return validate(node.source, context, "import")
             },
-        ].reduce(
-            (mergedVisitor, thisVisitor) =>
-                mergeVisitorsInPlace(mergedVisitor, thisVisitor),
-            {}
-        )
+            ExportNamedDeclaration(node) {
+                return validate(node.source, context, "import")
+            },
+            ImportDeclaration(node) {
+                return validate(node.source, context, "import")
+            },
+            ImportExpression(node) {
+                return validate(node.source, context, "import")
+            },
+        }
     },
 }