How to solve "TypeScript error TS5023: Unknown compiler option 'strict'" in TypeScript?

The error message "TypeScript error TS5023: Unknown compiler option 'strict'" occurs when you are using an invalid or outdated TypeScript compiler option.

In this case, it appears that you are trying to use the strict compiler option, but your TypeScript compiler version is outdated and does not recognize this option. The strict option was introduced in TypeScript version 2.3, so if you are using a version earlier than that, it will not work.

To resolve this issue, you will need to upgrade your TypeScript compiler to a version that supports the strict option. You can do this by running the following command in your terminal or command prompt:


npm install -g typescript

This will install the latest version of TypeScript globally on your system. Once installed, you should be able to use the strict option without encountering the TS5023 error.

Note that the strict option enables several strict type-checking options in TypeScript, so make sure to read the documentation and understand how it affects your code before enabling it.

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