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Commit6a28c8f

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Preview/Oxlint
1 parentef04b8d commit6a28c8f

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5 files changed

+271
-0
lines changed

5 files changed

+271
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lines changed

‎.oxlintrc.json‎

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{
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"rules": {
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"all":"error"
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}
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}

‎oxc1.js‎

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// Redeclared variable (error)
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letvalue=1;
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letvalue=2;
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// Duplicate function parameters (error)
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functionduplicateParams(a,a){
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console.log(a);
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}
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// Constant reassignment (error)
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constconstVar=123;
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constVar=456;
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// Invalid left-hand assignment (error)
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functioninvalidAssignment(){
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42=x;
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}
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// Reserved keyword as identifier (error)
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letfor='reserved keyword';
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// Using 'await' outside async function (error)
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awaitfetch('https://example.com');
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// Duplicate key in object literal (error)
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constobj={
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key:1,
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key:2
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};
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// Illegal break statement (error)
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break;
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// Illegal return statement outside function (error)
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return42;

‎oxc1.test‎

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// Unused variable
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function unusedVariableDemo() {
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let unusedVar = 'this is never used';
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}
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// Unreachable code after return
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function unreachableCode() {
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return true;
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console.log('This is unreachable');
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}
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// Missing semicolon
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function missingSemicolon() {
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console.log('Missing semicolon here')
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}
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// Redeclared variable
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function redeclareVariable() {
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let value = 1;
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let value = 2; // Redeclaration error
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}
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// Incorrect equality comparison (use strict equality)
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function incorrectEquality(a) {
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if (a == null) {
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console.log('Use strict equality instead.');
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}
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}
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// Empty block
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if (true) {}
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// Console statement (assuming no-console rule active)
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console.log('Console logging should be flagged.');
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// Shadowed variable names
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let shadowVar = 'outer';
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function shadowVariable() {
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let shadowVar = 'inner'; // shadows outer variable
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console.log(shadowVar);
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}
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// Use of var instead of let/const
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function varUsage() {
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var legacyVar = 123;
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return legacyVar;
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}
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// Improper indentation
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function indentation() {
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console.log('Improper indentation');
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}
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// Trailing spaces
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function trailingSpace() {
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return 42;
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}
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// Mixed spaces and tabs
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function mixedSpacesTabs() {
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console.log('Mixed indentation with tabs and spaces');
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}
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// Undefined variable
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function undefinedVariable() {
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console.log(nonExistentVar);
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}
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// unused variable
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function unusedVarExample() {
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const unusedVariable = "unused";
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}
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// unreachable code
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function unreachableExample() {
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return;
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console.log("unreachable");
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}
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// missing semicolon
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console.log("semicolon missing")
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// redeclared variable
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let duplicateVar

‎oxc3.test‎

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// Explicit any type
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function explicitAny(a: any): any {
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return a;
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}
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// Redeclared variable
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let foo = 123;
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let foo = 456;
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// Duplicate parameters
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function duplicateParams(a: number, a: number) {
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return a;
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}
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// Constant reassignment
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const MY_CONST = 'value';
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MY_CONST = 'newValue';
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// Invalid assignment
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function invalidAssignment() {
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true = false;
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}
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// Reserved keywords as identifiers
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const class = 'illegal';
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// Unreachable code
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function unreachable(): number {
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return 1;
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console.log("never reached");
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}
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// Misuse of async/await
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await Promise.resolve();
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// Invalid usage of enum
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enum Colors {
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Red,
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Green,
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Red
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}
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// Empty interface
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interface EmptyInterface {}
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// Empty function body
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function emptyFunction() {}
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// Illegal use of break
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break;
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// Illegal use of continue
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continue;
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// Illegal return outside function
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return 123;
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// Unused variable
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let unusedVar: number = 5;
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// Use before definition
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console.log(undeclaredVar);
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// Duplicate object literal keys
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const myObject = {
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name: 'John',
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name: 'Doe'
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};
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// Function overload conflict
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function overloadConflict(a: string): void;
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function overloadConflict(a: number): number;
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function overloadConflict(a: string | number) {
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return a;
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}
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function overloadConflict(a: boolean) {
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return a;
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}
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// Type assertion with no effect
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let someNum = 123 as number;
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// Useless cast
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let uselessCast = "hello" as any as string;
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// Shadowed variable
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let shadow = 1;
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function shadowVar() {
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let shadow = 2;
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return shadow;
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}
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// Illegal trailing commas
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const illegalTrailingComma = {
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foo: "bar",
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};
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// Promise without await or catch
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async function promiseIssue() {
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Promise.resolve();
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}
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// Misuse of generics
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function genericMisuse<T>(x: T) {
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return x.invalidProperty;
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}

‎oxc5.js‎

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// unused variable
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constunusedVar=42
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// equality without type checking
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if(unusedVar=="42"){
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console.log("Bad equality!")
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}
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// explicit any usage (TypeScript)
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functiondoSomethingBad(param){
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console.log(param)
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}
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// using debugger statement
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debugger;
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// deeply nested and complex function
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functioncomplexFunction(a,b,c,d,e){
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if(a){
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if(b){
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if(c){
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if(d){
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if(e){
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console.log("Nested madness!");
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}
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}
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}
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}
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}
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}
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// console logging directly (not allowed)
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console.log("Direct logging")
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// function declared but never used
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functionunusedFunction(){
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return"Never called!"
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}
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// badly named variables
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letX="badly named"

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