File index.js has 799 lines of code (exceeds 250 allowed). Consider refactoring. Open
import includes from "lodash/includes";
import repeat from "lodash/repeat";
import Renamer from "./lib/renamer";
import type NodePath from "../path";
import traverse from "../index";Function isPure has a Cognitive Complexity of 60 (exceeds 5 allowed). Consider refactoring. Open
isPure(node, constantsOnly?: boolean) {
if (t.isIdentifier(node)) {
const binding = this.getBinding(node.name);
if (!binding) return false;
if (constantsOnly) return binding.constant;- Read upRead up
Cognitive Complexity
Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.
A method's cognitive complexity is based on a few simple rules:
- Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
- Code is considered more complex for each "break in the linear flow of the code"
- Code is considered more complex when "flow breaking structures are nested"
Further reading
Scope has 52 functions (exceeds 20 allowed). Consider refactoring. Open
export default class Scope {
/**
* This searches the current "scope" and collects all references/bindings
* within.
*/Function gatherNodeParts has a Cognitive Complexity of 41 (exceeds 5 allowed). Consider refactoring. Open
function gatherNodeParts(node: Object, parts: Array) {
switch (node?.type) {
default:
if (t.isModuleDeclaration(node)) {
if (node.source) {- Read upRead up
Cognitive Complexity
Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.
A method's cognitive complexity is based on a few simple rules:
- Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
- Code is considered more complex for each "break in the linear flow of the code"
- Code is considered more complex when "flow breaking structures are nested"
Further reading
Function gatherNodeParts has 112 lines of code (exceeds 25 allowed). Consider refactoring. Open
function gatherNodeParts(node: Object, parts: Array) {
switch (node?.type) {
default:
if (t.isModuleDeclaration(node)) {
if (node.source) {Function registerBinding has a Cognitive Complexity of 19 (exceeds 5 allowed). Consider refactoring. Open
registerBinding(kind: string, path: NodePath, bindingPath = path) {
if (!kind) throw new ReferenceError("no `kind`");
if (path.isVariableDeclaration()) {
const declarators: Array<NodePath> = path.get("declarations");- Read upRead up
Cognitive Complexity
Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.
A method's cognitive complexity is based on a few simple rules:
- Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
- Code is considered more complex for each "break in the linear flow of the code"
- Code is considered more complex when "flow breaking structures are nested"
Further reading
Function crawl has a Cognitive Complexity of 17 (exceeds 5 allowed). Consider refactoring. Open
crawl() {
const path = this.path;
this.references = Object.create(null);
this.bindings = Object.create(null);- Read upRead up
Cognitive Complexity
Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.
A method's cognitive complexity is based on a few simple rules:
- Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
- Code is considered more complex for each "break in the linear flow of the code"
- Code is considered more complex when "flow breaking structures are nested"
Further reading
Function isPure has 53 lines of code (exceeds 25 allowed). Consider refactoring. Open
isPure(node, constantsOnly?: boolean) {
if (t.isIdentifier(node)) {
const binding = this.getBinding(node.name);
if (!binding) return false;
if (constantsOnly) return binding.constant;Function crawl has 48 lines of code (exceeds 25 allowed). Consider refactoring. Open
crawl() {
const path = this.path;
this.references = Object.create(null);
this.bindings = Object.create(null);Function exit has a Cognitive Complexity of 15 (exceeds 5 allowed). Consider refactoring. Open
exit(path) {
const { node, scope } = path;
const declar = node.declaration;
if (t.isClassDeclaration(declar) || t.isFunctionDeclaration(declar)) {
const id = declar.id;- Read upRead up
Cognitive Complexity
Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.
A method's cognitive complexity is based on a few simple rules:
- Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
- Code is considered more complex for each "break in the linear flow of the code"
- Code is considered more complex when "flow breaking structures are nested"
Further reading
Function registerDeclaration has a Cognitive Complexity of 15 (exceeds 5 allowed). Consider refactoring. Open
registerDeclaration(path: NodePath) {
if (path.isLabeledStatement()) {
this.registerLabel(path);
} else if (path.isFunctionDeclaration()) {
this.registerBinding("hoisted", path.get("id"), path);- Read upRead up
Cognitive Complexity
Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.
A method's cognitive complexity is based on a few simple rules:
- Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
- Code is considered more complex for each "break in the linear flow of the code"
- Code is considered more complex when "flow breaking structures are nested"
Further reading
Function toArray has 39 lines of code (exceeds 25 allowed). Consider refactoring. Open
toArray(node: Object, i?: number | boolean, allowArrayLike?: boolean) {
if (t.isIdentifier(node)) {
const binding = this.getBinding(node.name);
if (binding?.constant && binding.path.isGenericType("Array")) {
return node;Function registerBinding has 30 lines of code (exceeds 25 allowed). Consider refactoring. Open
registerBinding(kind: string, path: NodePath, bindingPath = path) {
if (!kind) throw new ReferenceError("no `kind`");
if (path.isVariableDeclaration()) {
const declarators: Array<NodePath> = path.get("declarations");Function registerDeclaration has 28 lines of code (exceeds 25 allowed). Consider refactoring. Open
registerDeclaration(path: NodePath) {
if (path.isLabeledStatement()) {
this.registerLabel(path);
} else if (path.isFunctionDeclaration()) {
this.registerBinding("hoisted", path.get("id"), path);Function getAllBindingsOfKind has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring. Open
getAllBindingsOfKind(): Object {
const ids = Object.create(null);
for (const kind of (arguments: Array)) {
let scope = this;- Read upRead up
Cognitive Complexity
Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.
A method's cognitive complexity is based on a few simple rules:
- Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
- Code is considered more complex for each "break in the linear flow of the code"
- Code is considered more complex when "flow breaking structures are nested"
Further reading
Function toArray has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring. Open
toArray(node: Object, i?: number | boolean, allowArrayLike?: boolean) {
if (t.isIdentifier(node)) {
const binding = this.getBinding(node.name);
if (binding?.constant && binding.path.isGenericType("Array")) {
return node;- Read upRead up
Cognitive Complexity
Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.
A method's cognitive complexity is based on a few simple rules:
- Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
- Code is considered more complex for each "break in the linear flow of the code"
- Code is considered more complex when "flow breaking structures are nested"
Further reading
Function push has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring. Open
push(opts: {
id: Object,
init: ?Object,
unique: ?boolean,
_blockHoist: ?number,- Read upRead up
Cognitive Complexity
Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.
A method's cognitive complexity is based on a few simple rules:
- Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
- Code is considered more complex for each "break in the linear flow of the code"
- Code is considered more complex when "flow breaking structures are nested"
Further reading
Avoid deeply nested control flow statements. Open
for (const elem of (node.elements: Array<Object>)) {
if (!this.isPure(elem, constantsOnly)) return false;
}Avoid deeply nested control flow statements. Open
} else if (t.isObjectExpression(node)) {
for (const prop of (node.properties: Array<Object>)) {
if (!this.isPure(prop, constantsOnly)) return false;
}
return true;Avoid deeply nested control flow statements. Open
if (binding) binding.reference(path);Avoid deeply nested control flow statements. Open
if (!this.isPure(method, constantsOnly)) return false;Function getBinding has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring. Open
getBinding(name: string) {
let scope = this;
let previousPath;
do {- Read upRead up
Cognitive Complexity
Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.
A method's cognitive complexity is based on a few simple rules:
- Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
- Code is considered more complex for each "break in the linear flow of the code"
- Code is considered more complex when "flow breaking structures are nested"
Further reading
Avoid too many return statements within this function. Open
return this.isPure(node.value, constantsOnly);Avoid too many return statements within this function. Open
return (
this.isPure(node.left, constantsOnly) &&
this.isPure(node.right, constantsOnly)
);Avoid too many return statements within this function. Open
if (node.computed && !this.isPure(node.key, constantsOnly)) return false;Avoid too many return statements within this function. Open
if (node.kind === "get" || node.kind === "set") return false;Avoid too many return statements within this function. Open
return true;Avoid too many return statements within this function. Open
return false;Avoid too many return statements within this function. Open
if (node.computed && !this.isPure(node.key, constantsOnly)) return false;Avoid too many return statements within this function. Open
return t.isPureish(node);Avoid too many return statements within this function. Open
if (!this.isPure(expression, constantsOnly)) return false;Avoid too many return statements within this function. Open
return (
t.matchesPattern(node.tag, "String.raw") &&
!this.hasBinding("String", true) &&
this.isPure(node.quasi, constantsOnly)
);Avoid too many return statements within this function. Open
if (!noGlobals && includes(Scope.globals, name)) return true;Avoid too many return statements within this function. Open
if (!this.isPure(method, constantsOnly)) return false;Avoid too many return statements within this function. Open
if (!this.isPure(elem, constantsOnly)) return false;Avoid too many return statements within this function. Open
if (!noGlobals && includes(Scope.contextVariables, name)) return true;Avoid too many return statements within this function. Open
return this.isPure(node.body, constantsOnly);Avoid too many return statements within this function. Open
return true;Avoid too many return statements within this function. Open
if (!this.isPure(prop, constantsOnly)) return false;Avoid too many return statements within this function. Open
return true;Avoid too many return statements within this function. Open
return this.isPure(node.argument, constantsOnly);Avoid too many return statements within this function. Open
return true;Avoid too many return statements within this function. Open
return true;Function hasBinding has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring. Open
hasBinding(name: string, noGlobals?) {
if (!name) return false;
if (this.hasOwnBinding(name)) return true;
if (this.parentHasBinding(name, noGlobals)) return true;
if (this.hasUid(name)) return true;- Read upRead up
Cognitive Complexity
Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.
A method's cognitive complexity is based on a few simple rules:
- Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
- Code is considered more complex for each "break in the linear flow of the code"
- Code is considered more complex when "flow breaking structures are nested"
Further reading
Similar blocks of code found in 2 locations. Consider refactoring. Open
getBlockParent() {
let scope = this;
do {
if (scope.path.isBlockParent()) {
return scope;- Read upRead up
Duplicated Code
Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:
Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.
When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).
Tuning
This issue has a mass of 62.
We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.
The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.
If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.
See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.
Refactorings
- Extract Method
- Extract Class
- Form Template Method
- Introduce Null Object
- Pull Up Method
- Pull Up Field
- Substitute Algorithm
Further Reading
- Don't Repeat Yourself on the C2 Wiki
- Duplicated Code on SourceMaking
- Refactoring: Improving the Design of Existing Code by Martin Fowler. Duplicated Code, p76
Similar blocks of code found in 2 locations. Consider refactoring. Open
getProgramParent() {
let scope = this;
do {
if (scope.path.isProgram()) {
return scope;- Read upRead up
Duplicated Code
Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:
Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.
When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).
Tuning
This issue has a mass of 62.
We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.
The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.
If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.
See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.
Refactorings
- Extract Method
- Extract Class
- Form Template Method
- Introduce Null Object
- Pull Up Method
- Pull Up Field
- Substitute Algorithm
Further Reading
- Don't Repeat Yourself on the C2 Wiki
- Duplicated Code on SourceMaking
- Refactoring: Improving the Design of Existing Code by Martin Fowler. Duplicated Code, p76
Similar blocks of code found in 3 locations. Consider refactoring. Open
} else if (t.isTemplateLiteral(node)) {
for (const expression of (node.expressions: Array<Object>)) {
if (!this.isPure(expression, constantsOnly)) return false;
}
return true;- Read upRead up
Duplicated Code
Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:
Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.
When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).
Tuning
This issue has a mass of 56.
We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.
The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.
If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.
See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.
Refactorings
- Extract Method
- Extract Class
- Form Template Method
- Introduce Null Object
- Pull Up Method
- Pull Up Field
- Substitute Algorithm
Further Reading
- Don't Repeat Yourself on the C2 Wiki
- Duplicated Code on SourceMaking
- Refactoring: Improving the Design of Existing Code by Martin Fowler. Duplicated Code, p76
Similar blocks of code found in 3 locations. Consider refactoring. Open
} else if (t.isObjectExpression(node)) {
for (const prop of (node.properties: Array<Object>)) {
if (!this.isPure(prop, constantsOnly)) return false;
}
return true;- Read upRead up
Duplicated Code
Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:
Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.
When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).
Tuning
This issue has a mass of 56.
We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.
The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.
If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.
See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.
Refactorings
- Extract Method
- Extract Class
- Form Template Method
- Introduce Null Object
- Pull Up Method
- Pull Up Field
- Substitute Algorithm
Further Reading
- Don't Repeat Yourself on the C2 Wiki
- Duplicated Code on SourceMaking
- Refactoring: Improving the Design of Existing Code by Martin Fowler. Duplicated Code, p76
Similar blocks of code found in 3 locations. Consider refactoring. Open
} else if (t.isArrayExpression(node)) {
for (const elem of (node.elements: Array<Object>)) {
if (!this.isPure(elem, constantsOnly)) return false;
}
return true;- Read upRead up
Duplicated Code
Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:
Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.
When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).
Tuning
This issue has a mass of 56.
We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.
The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.
If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.
See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.
Refactorings
- Extract Method
- Extract Class
- Form Template Method
- Introduce Null Object
- Pull Up Method
- Pull Up Field
- Substitute Algorithm
Further Reading
- Don't Repeat Yourself on the C2 Wiki
- Duplicated Code on SourceMaking
- Refactoring: Improving the Design of Existing Code by Martin Fowler. Duplicated Code, p76
Identical blocks of code found in 2 locations. Consider refactoring. Open
if (
path.isFunctionExpression() &&
path.has("id") &&
!path.get("id").node[t.NOT_LOCAL_BINDING]
) {- Read upRead up
Duplicated Code
Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:
Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.
When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).
Tuning
This issue has a mass of 47.
We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.
The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.
If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.
See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.
Refactorings
- Extract Method
- Extract Class
- Form Template Method
- Introduce Null Object
- Pull Up Method
- Pull Up Field
- Substitute Algorithm
Further Reading
- Don't Repeat Yourself on the C2 Wiki
- Duplicated Code on SourceMaking
- Refactoring: Improving the Design of Existing Code by Martin Fowler. Duplicated Code, p76
Identical blocks of code found in 2 locations. Consider refactoring. Open
if (
path.isFunctionExpression() &&
path.has("id") &&
!path.get("id").node[t.NOT_LOCAL_BINDING]
) {- Read upRead up
Duplicated Code
Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:
Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.
When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).
Tuning
This issue has a mass of 47.
We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.
The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.
If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.
See codeclimate-duplication's documentation for more information about tuning the mass threshold in your .codeclimate.yml.
Refactorings
- Extract Method
- Extract Class
- Form Template Method
- Introduce Null Object
- Pull Up Method
- Pull Up Field
- Substitute Algorithm
Further Reading
- Don't Repeat Yourself on the C2 Wiki
- Duplicated Code on SourceMaking
- Refactoring: Improving the Design of Existing Code by Martin Fowler. Duplicated Code, p76