TypeScript and the Error: Cannot Redeclare Block Scoped Variable <Name>

Hi, Devs!

Who are getting start in Typescript could face this error: “Cannot Redeclare Block Scoped Variable Name” and it means a concept into that language.

Let’s see an example:

The error is coming because we have a TypeScript feature….


This content originally appeared on DEV Community and was authored by Luiz Calaça

Hi, Devs!

Who are getting start in Typescript could face this error: "Cannot Redeclare Block Scoped Variable Name" and it means a concept into that language.

Let's see an example:

Cannot Redeclare Block Scoped Variable Name

The error is coming because we have a TypeScript feature.

1 - The file needs to be declared as a module (exports) with its own scope.
2 - The script into file will be comprehended in a global scope.

The first example is the 2 option. So, how can we solve that? Let's see another example with the export:

export and create a scope module

Therefore, when we use the export it's created a module with its own scope and not shared in global scope.

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This content originally appeared on DEV Community and was authored by Luiz Calaça


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Luiz Calaça | Sciencx (2022-02-18T01:09:54+00:00) TypeScript and the Error: Cannot Redeclare Block Scoped Variable <Name>. Retrieved from https://www.scien.cx/2022/02/18/typescript-and-the-error-cannot-redeclare-block-scoped-variable-name/

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