TypeScript is a popular programming language that has become increasingly popular among developers due to its strong typing, object-oriented programming, and scalability. As with any programming language, it’s important to follow coding standards to maintain consistency and ensure that your code is readable and maintainable. In this article, we will discuss some TypeScript coding standards that will help you write clean and consistent code.

Here are some best practices for TypeScript coding standards:

• Use strict mode: Always use strict mode by adding “strict”: true to your tsconfig.json file. This will help catch common errors at compile time, such as using undeclared variables.
• Use descriptive and meaningful names: Use descriptive names for variables, functions, and classes. Avoid using single-letter or abbreviated names that are hard to understand.
• Use interfaces and types: Use interfaces and types to define your data structures and function signatures. This will make your code more readable and easier to maintain.
• Use const and let: Use const for values that don’t change and let for values that can change. Avoid using var.
• Use arrow functions: Use arrow functions for short, concise functions. This makes the code more readable and easier to understand.
• Use default values for optional parameters: Use default values for optional parameters to improve readability and avoid undefined values.
• Use async/await: Use async/await instead of call-backs or promises for asynchronous code. This makes the code more readable and easier to understand.
• Use type inference: Let TypeScript infer the types where possible instead of explicitly defining them. This reduces code verbosity and improves readability.
• Use proper indentation and formatting: Use proper indentation and formatting to make your code more readable and easier to understand.
• Use comments sparingly: Use comments only when necessary to explain complex or confusing code. Too many comments can clutter the code and make it harder to read.

By following these guidelines, you can write TypeScript code that is clean, maintainable, and readable.

Brief explanation with sample codes

Use Strict Mode: It’s advisable to utilize strict mode consistently when programming in TypeScript. Being a strongly typed language, TypeScript mandates that each variable, function, and method has a precise data type. This ensures you catch errors at compile time, rather than at runtime. Additionally, strong typing can make your code more readable and self-documenting.

More usage of enums: In TypeScript, Enums (short for enumerations) provide a way to define a set of named constants. Assigning a relevant name to a correlated set of values can result in improved comprehensibility and ease of maintenance. Enums can also assign custom numeric or string values. As per the naming convention, it’s advisable to name enums using singular nouns with the first letter capitalized. Also, when defining constants, it’s often better to use enums instead of plain strings or numbers.