TypeScript · Compiler and project settings
noUncheckedIndexedAccess
Adds undefined to index access, forcing you to handle missing keys and holes.
Syntax
"noUncheckedIndexedAccess": trueExample
Example
{
"compilerOptions": {
"noUncheckedIndexedAccess": true
}
}More in this group
Learn this in the course
Reference pages are the quick answer. The course explains the why, shows the full example and ends with a challenge.