Скачать или смотреть typescript magic console log finally typed

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certainly! in typescript, you can enhance your logging capabilities by creating a "magic console log" function that provides type safety and improved formatting. this tutorial will guide you through the process of creating a typed logging utility in typescript.

what is magic console log?

the "magic console log" is a custom logging function that can automatically infer the types of the variables you want to log. this allows for better type safety and intellisense support in your ide.

step-by-step tutorial

step 1: setting up your typescript environment

before we begin, ensure you have typescript installed. you can set up a new typescript project with the following commands:



step 2: create the magic console log function

create a new typescript file, e.g., `magicconsolelog.ts`, and define your logging function:



step 3: compile and run

to compile and run your typescript file, you can use the following commands:



explanation of the code

1. **type alias**:
`loglevel`: this type alias restricts the log levels to `'log'`, `'info'`, `'warn'`, and `'error'`.

2. **magicconsolelog function**:
**generics**: the function uses a generic type `t` that allows you to pass any type of data to be logged.
**parameters**:
`level`: specifies the log level (log, info, warn, or error).
`message`: a string message to log.
`data`: an optional parameter that can be of any type.
**timestamp**: it formats the message with a timestamp to indicate when the log was made.
**logging**: the appropriate console method is called based on the log level.

benefits of using the magic console log

**type safety**: the function provides type safety for the data being logged.
**formatted output**: each log entry is formatted with a timestamp and log level, making it easier to read.
**flexibility**: you can log any type of data without losing type information.

conclusion

in this tutorial, we created a `magicconsolelog` function in ty ...

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