Fixing Uninitialized Variable Errors in TypeScript

Learn about strictNullChecks and strictPropertyInitialization options in TypeScript, which identify uninitialized variables and suggest error fixes.

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The strictNullChecks option

The strictNullChecks compiler option is used to find instances in our code where the value of a variable could be null or undefined at the time of usage. This means that when the variable is actually used if it has not been properly initialized, the compiler will generate an error message.

Consider the following code:

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