Showing 143 of 143 total issues
Avoid too many return
statements within this function. Open
return propertyName + ' ' + operator + ' ' + param;
Avoid too many return
statements within this function. Open
return items.push(query);
Avoid too many return
statements within this function. Open
return data.get(newPath);
Avoid too many return
statements within this function. Open
return this;
Avoid too many return
statements within this function. Open
return this;
Avoid too many return
statements within this function. Open
return data.get(newPath);
Avoid too many return
statements within this function. Open
return NumberType;
Avoid too many return
statements within this function. Open
return DateType;
Avoid too many return
statements within this function. Open
return this;
Avoid too many return
statements within this function. Open
return BooleanType;
Function isModified
has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring. Open
isModified(path) {
var pos = path.indexOf('.');
if(pos === -1) {
if(!this._data[path]) {
log('isModified Path not exists:' + path);
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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
Parsing error: 'import' and 'export' may appear only with 'sourceType: module' Open
import {EventEmitter} from 'events';
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For more information visit Source: http://eslint.org/docs/rules/
Parsing error: 'import' and 'export' may appear only with 'sourceType: module' Open
import BooleanType from './boolean';
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For more information visit Source: http://eslint.org/docs/rules/
Unexpected require(). Open
if ( require("util").isFunction(property.value)) {
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- Exclude checks
Enforce require() on the top-level module scope (global-require)
In Node.js, module dependencies are included using the require()
function, such as:
var fs = require("fs");
While require()
may be called anywhere in code, some style guides prescribe that it should be called only in the top level of a module to make it easier to identify dependencies. For instance, it's arguably harder to identify dependencies when they are deeply nested inside of functions and other statements:
function foo() {
if (condition) {
var fs = require("fs");
}
}
Since require()
does a synchronous load, it can cause performance problems when used in other locations.
Further, ES6 modules mandate that import
and export
statements can only occur in the top level of the module's body.
Rule Details
This rule requires all calls to require()
to be at the top level of the module, similar to ES6 import
and export
statements, which also can occur only at the top level.
Examples of incorrect code for this rule:
/*eslint global-require: "error"*/
/*eslint-env es6*/
// calling require() inside of a function is not allowed
function readFile(filename, callback) {
var fs = require('fs');
fs.readFile(filename, callback)
}
// conditional requires like this are also not allowed
if (DEBUG) { require('debug'); }
// a require() in a switch statement is also flagged
switch(x) { case '1': require('1'); break; }
// you may not require() inside an arrow function body
var getModule = (name) => require(name);
// you may not require() inside of a function body as well
function getModule(name) { return require(name); }
// you may not require() inside of a try/catch block
try {
require(unsafeModule);
} catch(e) {
console.log(e);
}
Examples of correct code for this rule:
/*eslint global-require: "error"*/
// all these variations of require() are ok
require('x');
var y = require('y');
var z;
z = require('z').initialize();
// requiring a module and using it in a function is ok
var fs = require('fs');
function readFile(filename, callback) {
fs.readFile(filename, callback)
}
// you can use a ternary to determine which module to require
var logger = DEBUG ? require('dev-logger') : require('logger');
// if you want you can require() at the end of your module
function doSomethingA() {}
function doSomethingB() {}
var x = require("x"),
z = require("z");
When Not To Use It
If you have a module that must be initialized with information that comes from the file-system or if a module is only used in very rare situations and will cause significant overhead to load it may make sense to disable the rule. If you need to require()
an optional dependency inside of a try
/catch
, you can disable this rule for just that dependency using the // eslint-disable-line global-require
comment.
Source: http://eslint.org/docs/rules/
Parsing error: 'import' and 'export' may appear only with 'sourceType: module' Open
import { EventEmitter } from 'events';
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For more information visit Source: http://eslint.org/docs/rules/
Parsing error: 'import' and 'export' may appear only with 'sourceType: module' Open
import Schema from './index';
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For more information visit Source: http://eslint.org/docs/rules/
Parsing error: 'import' and 'export' may appear only with 'sourceType: module' Open
import Schema from '../index';
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For more information visit Source: http://eslint.org/docs/rules/
Parsing error: 'import' and 'export' may appear only with 'sourceType: module' Open
import Type from './type';
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For more information visit Source: http://eslint.org/docs/rules/
The body of a for-in should be wrapped in an if statement to filter unwanted properties from the prototype. Open
for (let name in self._relations ) {
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Require Guarding for-in (guard-for-in)
Looping over objects with a for in
loop will include properties that are inherited through the prototype chain. This behavior can lead to unexpected items in your for loop.
for (key in foo) {
doSomething(key);
}
Note that simply checking foo.hasOwnProperty(key)
is likely to cause an error in some cases; see [no-prototype-builtins](no-prototype-builtins.md).
Rule Details
This rule is aimed at preventing unexpected behavior that could arise from using a for in
loop without filtering the results in the loop. As such, it will warn when for in
loops do not filter their results with an if
statement.
Examples of incorrect code for this rule:
/*eslint guard-for-in: "error"*/
for (key in foo) {
doSomething(key);
}
Examples of correct code for this rule:
/*eslint guard-for-in: "error"*/
for (key in foo) {
if (Object.prototype.hasOwnProperty.call(foo, key)) {
doSomething(key);
}
if ({}.hasOwnProperty.call(foo, key)) {
doSomething(key);
}
}
Related Rules
- [no-prototype-builtins](no-prototype-builtins.md)
Further Reading
The body of a for-in should be wrapped in an if statement to filter unwanted properties from the prototype. Open
for (let name in this._pre) {
- Read upRead up
- Exclude checks
Require Guarding for-in (guard-for-in)
Looping over objects with a for in
loop will include properties that are inherited through the prototype chain. This behavior can lead to unexpected items in your for loop.
for (key in foo) {
doSomething(key);
}
Note that simply checking foo.hasOwnProperty(key)
is likely to cause an error in some cases; see [no-prototype-builtins](no-prototype-builtins.md).
Rule Details
This rule is aimed at preventing unexpected behavior that could arise from using a for in
loop without filtering the results in the loop. As such, it will warn when for in
loops do not filter their results with an if
statement.
Examples of incorrect code for this rule:
/*eslint guard-for-in: "error"*/
for (key in foo) {
doSomething(key);
}
Examples of correct code for this rule:
/*eslint guard-for-in: "error"*/
for (key in foo) {
if (Object.prototype.hasOwnProperty.call(foo, key)) {
doSomething(key);
}
if ({}.hasOwnProperty.call(foo, key)) {
doSomething(key);
}
}
Related Rules
- [no-prototype-builtins](no-prototype-builtins.md)