How to Fix The Angular Compiler requires TypeScript >=3.4.0 and <3.5.0 but 3.5.3 was found instead.

How to Fix The Angular Compiler requires TypeScript >=3.4.0 and <3.5.0 but 3.5.3 was found instead.

To fix the “Angular Compiler requires TypeScript >=3.4.0 and <3.5.0 but 3.5.3 was found instead” error, you need to downgrade TypeScript to a compatible version. For example, typescript@3.4.0 will fix this error. You can install typescript@3.4.0 using the below command. npm install typescript@3.4.0 –save-dev This command will install TypeScript version 3.4.0 as a development dependency … Read more

How to Fix File name differs from already included file name only in casing in TypeScript

How to Fix File name differs from already included file name only in casing in TypeScript

To fix the “File name differs from already included file name only in casing” error in TypeScript, ensure that the “forceConsistentCasingInFileNames” option is set to “true” in your tsconfig.json file. This helps enforce consistent casing for file names in your project and avoid similar issues in the future. { “compilerOptions”: { “forceConsistentCasingInFileNames”: true, … }, … Read more

How to Implement Class Constants in TypeScript

How to Implement Class Constants in TypeScript

To implement class constants in TypeScript, use the “static readonly” modifier. This creates a property that belongs to the class itself (not to its instances) and cannot be modified once it’s initialized. Example class MyClass { static readonly CONSTANT_VALUE: string = “Yello, Homer!”; } console.log(MyClass.CONSTANT_VALUE); Output Yello, Homer! In this code example, we defined a … Read more

How to Remove an Element from an Array in TypeScript

How to Remove an Element from an Array in TypeScript

To remove an element from an array in TypeScript, you can use the “array.splice()” or “array.filter()” method. Method 1: Using the array.splice() function The array.splice() method modifies the original array by removing or replacing elements. It takes two arguments: the start index and the number of elements to delete. Example const arr = [1, 2, 3, … Read more

How to Pass Strongly-typed Functions as Parameters in TypeScript

How to Pass Strongly-typed Functions as Parameters in TypeScript

Is it possible to pass strongly–typed functions as parameters in TypeScript? Yes, it is possible to use strongly-typed functions as parameters in TypeScript. To pass strongly-typed functions as parameters in TypeScript, “define the function parameter type by specifying the input types and the return type“. Example Suppose you want a function execute that accepts a … Read more

How to Fix Property ‘…’ has no initializer and is not definitely assigned in the constructor

How to Fix Property '...' has no initializer and is not definitely assigned in the constructor

The “Property ‘…’ has no initializer and is not definitely assigned in the constructor” error occurs when TypeScript’s strictPropertyInitialization option is enabled (either directly or by enabling the strict option) and a class property is not initialized or assigned a value in the constructor. To fix the “Property ‘…’ has no initializer and is not … Read more