TypeScript · Compiler and project settings

exactOptionalPropertyTypes

Separates a missing property from a present property whose value is undefined. Stricter and more accurate.

Syntax
"exactOptionalPropertyTypes": true

Example

Example
{
  "compilerOptions": {
    "exactOptionalPropertyTypes": true
  }
}

More in this group

include / exclude lib moduleResolution noEmit noUncheckedIndexedAccess paths skipLibCheck strict

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